NC0065749_Annual Performance_20180806

CHARLOTTE
W 'TE R
August 6, 2018
Deborah Gore
NC Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Ms. Gore,
RECEIVED/DENWDWR
AUG 0 9 2018
Water Resources
Permitting Section
Enclosed is a copy of the Charlotte Water's Wastewater Performance Report for the fiscal year
ending June 30, 2018. Also enclosed is a copy of the bill insert summary of the report, which will
be sent out to more than 250,000 customers during September.
We have informed our staff and the city/county phone center about the report and they are
prepared to field or properly refer any questions or comments we receive. In addition, we have
shared this report with our elected officials on the Charlotte City Council, and with the six towns
we serve (Matthews, Mint Hill, Pineville, Cornelius, Huntersville and Davidson) as well as the
Mecklenburg County Manager. I mailed copies to Mike Parker at the NCDENR Mooresville
Office as well.
The bill insert summary and detailed report may be found online at www.charlottewater.org. An
advertisement will also be placed in a local Spanish newspaper as well as on our website.
If you have any questions or concerns about this report, please call or email me. My office number
is 704-336-1018 and my email is [e-mail].
Sincerely,
690"dek
Camden Coley
Charlotte Water
Charlotte Water 5100 Brookshire Blvd, Charlotte, NC 28216 charlottewater.org
„ Operated by the City of Charlotte

CHARLOTTE
W6TER
2018 WASTEWATER
PERFORMANCE REPORT
An annual summary of Charlotte Water's
wastewater system performance during
the fiscal year that ended June 30, 2018.
......................................
million gallons of
78.1 wastewater treated per day
Miles of wastewater 41330 system pipes ......................................
1,051 m
of wastewater pipes cleaned
......................................
food service
establishments 41440
inspected to ensure
proper grease disposal
......................................
15+ miles
of wastewater pipes repaired or replaced"
10.9(2007) Sewer spills
vs. per 100
3.8(2018) miles of pipe
How
did we do?
,IV7 CLTWater
successfully
collected and
treated 99.9%
224
of more than 28
189 billion gallons of
164 the community's
wastewater.
dumber of spills
. . . . . . . . .
per year
. • ... . . . . . . . . . . . . .. . . . . ♦ .. . . .
You
can reduce
sewer spills.
Drain excess grease or
cooking oil into a can,
cool and toss in the
trash.

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® -w In
charlottewater.org @cltwater /CharlotteWater CLTWaterBlog
4222 Westmont Drive Charlotte, NC 28217

I. General Information
Name of Regulated Entity and Responsible Person
City of Charlotte
Angela Lee, Director
Charlotte Water (CLTWater)
Administration Division
4222 Westmont Drive
Charlotte, NC 28217
704-336-4407
Applicable Permits
There are seven wastewater treatment plants (WWTP) owned and operated by
Charlotte Water (CLTWater). Below is a list of these facilities and their applicable
NPDES (National Pollutant Discharge Elimination System) permit number. Included
with the list of facilities is the name of the Operator in Responsible Charge (ORC) at
the facilities and the site telephone numbers.
WWTP
NPDES Permit
Number
ORC
Phone
Irwin Creek WWTP
NCO024945
Michael Lingerfelt
704-336-2572
Mallard Creek WRF
NCO030210
Henry Eudy
704-336-1024
McAlpine Creek WWMF
NCO024970
Sandy Kim Neely
704-542-0736
McDowell Creek WWTP
NCO036277
Darrell DeWitt
704-875-6443
Sugar Creek WWTP
NCO024937
William Allen
704-432-2510
Ashe Plantation WWTP
NCO065749
Jeremy Nance
704-634-3389
Oxford Glen WWTP
NCO063584
Jeremy Nance
704-634-3389
In addition to those seven plants, CLTWater sends wastewater to the Rocky River
Regional Wastewater Treatment Plant through an agreement with The Water and
Sewer Authority of Cabarrus County (WSACC). CLTWater also accepts flow from
Union County to McAlpine Creek WWMF.
WW COLLECTION NCDWQ Permit Number ORC Phone
4100 W. Tyvola Rd. WQCS00001 Steven Wrobleski 704-432-2748
Wastewater Performance Report August 2018

Description of collection and treatment systems
Charlotte Water (CLTWater) collects wastewater from approximately 260,578
households and businesses throughout the county. Wastewater is collected and
directed (via gravity flow supported by sewage lift stations) to one of seven
CLTWater wastewater treatment plants or the Rocky River Regional Plant (owned
and operated by the Water and Sewer Authority of Cabarrus County) where it is
treated. An average of 78.1 million gallons of wastewater is treated and discharged
each day from CLTWater plants. CLTWater contributes an average of 3.98 million
gallons a day (MGD) to the Rocky River Plant. CLTWater also treats roughly 1.97
million gallons (part of the 79 mgd) from Union County at CLTWater's McAlpine
Creek Plant.
More than 300 of CLTWater's 958 employees work to maintain 4,331 miles of
collection pipelines and 81 wastewater lift stations throughout the county. The
gravity wastewater pipes in this system range in size from 8 inches in diameter to
78 inches in diameter.
Each of CLTWater's wastewater treatment plants applies primary, secondary and
advanced treatment to the waste stream. Large solid particles and inorganic
materials are removed by screening and settling. The wastewater is treated
biologically to remove dissolved pollutants. Disinfection reduces bacterial and
pathogenic materials. Finally, the waste stream passes through granular filters to
remove very small particles that may not have been removed through the settling
process. The treated water is released to the nearby creek.
Wastewater Performance Report August 2018 2

1. Primary Treatment
Solid particles & objects are captured by screens, grit chambers, and primary
clarifiers.
2. Aeration/Secondary Treatment
Wastewater is aerated to support growth of microorganisms that remove
harmful pollutants.
3. Clarification
Solids and microorganisms settle out in large basins.
4. Advanced Treatment
Wastewater flows through granular filters to remove fine particles. Nutrient
levels are reduced at McDowell and McAlpine Creek Wastewater Treatment
Plants.
5. Disinfection
Water is disinfected to remove any remaining pathogens, and then the treated
water is released into creeks.
Wastewater Performance Report August 2018 3

II. Summary of System Performance
FY18 Performance
Charlotte Water successfully collected and treated 99.927 percent of the more than
28.4 billion gallons of wastewater the community produced in the past fiscal year.
There were 164 sanitary sewer overflows (SSOs) in our community, a decrease of 25
spills compared to the year before. An estimated 20,670,684 gallons spilled with
97.87% (20,231,505 gallons) of the volume occurring during two historical spills
caused by heavy rains / fallen trees.
450
400
350
300
O
Ln
250
200
150
100
Yearly SSOs vs 5 -Year Moving A
,y0 ,y0 ,y0 ,ti0 ,LO ,ti0 ,ti0 ,ti0 ,10 ,ti0 ,LO ,ti0 ,LO ,ti0 ,ti0
Fiscal Year
-4—Yearly SSOs —$--5-Year Average
The number of spills per 100 miles of pipe continued to decline from 10.8 in 2007
to 3.8 spills in fiscal year 2018 as illustrated by the table on page 5.
Wastewater Performance Report August 2018 4

Numner or 55usi-iuu miles vs 5 -Year moving Average
Inspection crews and our customers find overflows. Overflows from the wastewater
collection system are discovered during routine inspections of the system and also
through reports from the public to 311. CLTWater notifies media any time a
sanitary sewer overflow results in 1,000 gallons or more reaching surface waters or
reaching recreational waters. A legal notice is posted in the Charlotte Observer
when overflows of 15,000 gallons or more reach surface waters. Crews also use
door hangers to notify customers when appropriate, which is a permit
requirement.
This annual report includes all incidents where wastewater escaped out of a
manhole or pipe before reaching proper treatment, including spills less than
required reporting thresholds (i.e. less than 1,000 gallons or any amount reaching
surface water). Private spills and sewer backups inside homes are not included. The
report summarizes spills (both reportable to the State and those escaping the
sewer) and other challenges at wastewater treatment plants.
CLTWater employees work 24 hours a day, 365 days per year, to prevent and
respond to overflows. Crews prevent overflows by clearing pipes of tree roots and
grease, as well as replacing broken and aging pipes. CLTWater has increased its
Wastewater Performance Report August 2018 5
12
11
10
10.5
10.8 10.8
LA
10.2
v
9
8
9.2 8.9
8.6
8.2
c
7
a
6
6.7
6.2
5
5.9
4
5.3
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4.4 3.8
3
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OR
Oh 00 01 O00 O� y0
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Fiscal Year
—t—SS0s/100 Miles
—4 -5 -Year Moving Average
Inspection crews and our customers find overflows. Overflows from the wastewater
collection system are discovered during routine inspections of the system and also
through reports from the public to 311. CLTWater notifies media any time a
sanitary sewer overflow results in 1,000 gallons or more reaching surface waters or
reaching recreational waters. A legal notice is posted in the Charlotte Observer
when overflows of 15,000 gallons or more reach surface waters. Crews also use
door hangers to notify customers when appropriate, which is a permit
requirement.
This annual report includes all incidents where wastewater escaped out of a
manhole or pipe before reaching proper treatment, including spills less than
required reporting thresholds (i.e. less than 1,000 gallons or any amount reaching
surface water). Private spills and sewer backups inside homes are not included. The
report summarizes spills (both reportable to the State and those escaping the
sewer) and other challenges at wastewater treatment plants.
CLTWater employees work 24 hours a day, 365 days per year, to prevent and
respond to overflows. Crews prevent overflows by clearing pipes of tree roots and
grease, as well as replacing broken and aging pipes. CLTWater has increased its
Wastewater Performance Report August 2018 5

efforts to educate customers about properly disposing of fats, oils and grease
(FOG).
Performance Highlights
• CLTWater celebrated some important milestones in FY2018 even as it took
numerous actions to prevent overflows and protect water quality through
effective wastewater treatment.
• Our wastewater treatment plants met 99.92 percent of all permitted discharge
limits.
All seven wastewater treatment plants earned Peak Performance Awards from
the National Association of Clean Water Agencies (NACWA) for the calendar year
ending 2017. NACWA Peak Performance Awards recognize wastewater
treatment professionals throughout the nation for protecting the environment
and public health through outstanding treatment and discharge regulatory
compliance. McAlpine Creek Wastewater Treatment Plant was awarded its sixth
Platinum Award for ten consecutive years of perfect compliance. McDowell
Creek Wastewater Treatment Plant also earned a Platinum Award, fifth out of
last 10 years. Ashe Plantation, Oxford Glen, Irwin Creek, Mallard Creek, and
Sugar Creek Wastewater Treatment Plants earned Gold Awards for zero permit
violations in a one year period. Over 5,200 compliance tests were conducted
during the 2017 calendar year.
15.75 miles of wastewater pipe and 374 manholes were rehabilitated or
replaced.
• 392 miles of wastewater pipe were treated with root control chemicals.
1,051 miles of wastewater lines were cleaned (including some multiple cleanings
in the same location) by CLTWater Field Operations Staff and an additional 117.5
miles of pipe were cleaned by contractors.
513 wastewater service connections were replaced.
50 miles of rights of way were cleared by contractors to maintain access to off-
street sanitary wastewater pipes and to help prevent root intrusions. An
additional 57.6 miles were cleared by CLTWater staff.
283 miles of pipe were closed circuit television recorded (CCN) for inspection by
CLTWater staff and contractors.
• There are 81 Wastewater Lift Stations serving the CLTWater service area. Staff
performed 146 preventative maintenance/electrical tasks for a total of 2,676
work hours. This does not include daily/weekly station checks, wet well cleaning,
emergency generator testing, or emergency/routine repairs. Westhall Lift Station
was removed from service due to the installation of a gravity line.
Wastewater Performance Report August 2018 6

• Charlotte Water continues to replace the Steele Creek Pump Station and force
main that conveys community wastewater to the nearest wastewater treatment
plant in Pineville. This is an investment of $44 million. This project is 90%
complete.
• Construction of the Briar Creek Relief Sewer Project (Phase Three) began in 2016
and is 90% complete.
• Ayrsley Gravity Sewer Replacement Phase 2 started construction in August 2017
and is 97% complete. This is a $2.5 million investment to serve the growing
population in the South Tryon 1-485 area.
• McAlpine Creek Wastewater Management Facility Plant and Potable/Non-
Potable Water System Reliability Improvements started in fiscal year 2017 and is
65% complete. This is a $6.5 million investment.
• McAlpine Creek Wastewater Treatment Plant captures and converts methane
gas (a byproduct of wastewater treatment) into a fuel for electricity production
and useful heat. The Combined Heat and Power (CHP) system was an
investment of $4.6 million. The project was financed by a 20 -year, zero -interest
loan from the state's Clean Water State Revolving Fund (a federal Clean Water
Act program that's been in operation since the late 1980's). CLTWater is the first
water/wastewater utility in North Carolina to build a CHP facility. Since reaching
consistent operation -s in November 2017, the engine has had an average uptime
of 90%, running about 21.5 hours out of every 24 hour day. The generator has
created more than 7.4 billion kilowatt hours, resulting in a power credit of more
than $324,000. In the month of June, the unit surpassed the 8,176 hours of
runtime mark, officially having run a full "year." Running at 1 megawatt (MW),
the engine puts out the equivalent of about 5 acres of solar, around the clock
and even on cloudy days.
FWrxWFREE
Charlotte Water started a fats, oil and grease reduction effort during the late
1990s to educate customers about food related clogs that lead to sanitary sewer
overflows. In 2017, Charlotte Water rebranded to FlowFree to focus on other
overflow contributors now that grease related spills continue to decline.
• City staff inspected grease -handling facilities at 4,440 food service
establishments and restaurants (not including follow-up inspections) to ensure
proper grease disposal.
• Staff issued 140 Notices of Deficiency (NOD) of which 106 returned to
compliance and 34 are still under investigation.
Wastewater Performance Report August 2018

• Staff issued four Notices of Violation (NOV).
In total, 34 grease traps were installed by businesses to fulfill NOD
requirements.
The City continued its educational program to teach proper disposal of pipe -
blocking materials.
Inspectors mailed information to 1,236 customers near spill sites and handed
out information to 2,107 customers in apartments / multi -family complexes.
• Staff conducted presentations to more than 5,783 children and adults. Multiple
Earth Day events also provided opportunities to distribute FlowFree scrapers,
pens and other items.
• CLTWater continues to use door -hangers specifically for maintenance personnel
or property managers of apartment or multi -family complexes. This reinforces
best management practices for prevention.
Staff continues to provide bilingual door hangers and promotional items for
property managers to give to new residents.
Staff budgeted advertisement money for fiscal year 2019. During fiscal year
2018, staff completed the procurement and vendor selection process to create
new advertising materials.
Communications staff posted alerts on Nextdoor to inform residents of spills
that exceeded 1,000 gallons in creeks or any amount that reached recreational
water.
Continuing Challenges
Wastewater Collection Challenges
The greatest continuing wastewater challenge in this community - and in others
across the U.S. - is sewage overflows. Of the 164 sewer spills that occurred, grease
(fats, oils, grease, and other food leftovers) accounted for most of the sanitary
sewer overflows. While still the leading cause of overflows, grease was less than
50% for the sixth straight year. Grease has traditionally been the primary cause of
50-60% of spills.
Other spill causes included the intrusion of tree roots into pipes, broken pipes,
debris, and vandalism. Of the 164 spills, 18 were caused by various construction
activities either damaging pipes or manholes or causing debris to clog the pipe.
These were documented in below itemized spill report as other, debris, or pipe
failure to align with state spill cause categories. CLTWater works with contractors to
prevent infrastructure damage.
Wastewater Performance Report August 2018 8

CLTWater experienced one spill that was caused by severe natural condition (heavy
rain event exceeding capacity of wastewater pipe or manhole) and two spills that
were caused inflow and infiltration (I & 1). The first I & I spill was caused by a broken
water main that overfilled a wastewater manhole. The second I & I spill was caused
by rain water exceeds capacity of pipe or manhole. Sanitary sewer pipes are not
designed to collect and transport rain water but occasionally water will enter the
pipe. CLTWater crews investigate and repair locations where water is able to enter
the sanitary sewer pipe network.
Fiscal Year 2018 Overflows by Primary Cause
Pump Station Inflow & Infiltration Severe Natural
EnuinrnPnt Fnihira_ (1/11.2 Condition, 1
Vandalism, 4_
Grease and other blockages that lead to sewer overflows are cleared by CLTWater
crews, using various cleaning methods, including mechanical rodders and truck-
mounted water jets. If damaged pipe or other infrastructure is discovered it is
repaired. The spilled wastewater can sometimes be captured and pumped back
into the sewer system.
Wastewater Performance Report August 2018 9

CLTWater Rapid Response Crews are quick to respond when notified of a possible
spill. Crews responded to more than 92.1 percent of the spills within 60 minutes
and 98.7 percent of the spills within 120 minutes. The average for all response was
31 minutes. The state standard for response is 120 minutes or less.
Two Overflows Account For 97.8796 of Gallons Spilled For The Year
During this year CLTWater experienced two spills that exceeded previous spills. The
two spills caused an estimated 20,231,505 gallons to reach creeks. This is 97.87
percent of the total amount spilled for the year. Both spills were caused by pipes
breaking after large trees fell. Additional information is available below:
1. On October 24, 2017, CLTWater staff at the Mallard Creek Wastewater
Treatment Plant observed lower than normal amounts of wastewater coming
into the plant. Staff began checking manholes and pipes upstream to look for
a cause of the lower flows. A broken pipe was discovered upstream of the
plant in Mallard Creek. A fallen tree, likely caused by rain hours before,
damaged a 36 -inch wastewater pipe. The community's wastewater was
diverted to temporary pumps and pipes while the tree, debris, and the pipe
were removed. Charlotte Water staff and vendors monitored pumps around
the clock. There was a second spill at the location due to the creek bank
collapsing but staff was able to quickly contain and put wastewater back in
the temporary pipes.
2. On Monday, April 23, CLTWater received information from Mecklenburg
County regarding a sewer odor and fish kill. CLTWater crews discovered a
broken 30 -inch wastewater pipe at the confluence of McIntyre Creek and
Long Creek. Recent storms caused trees to fall and erosion of the stream
bank up to 50 feet in some places. The wastewater pipe, undermined by the
debris, heavy flows and erosion, fell into Long Creek under its own weight. By
Tuesday morning the spill was contained and crews began cleanup and
pumping operations so that no further wastewater spilled. CLTWater staff
suspects the break occurred during the very heavy storm the night of April
15-16. The Long Creek spill is the largest spill Charlotte Water has recorded at
15.4 million gallons.
Downstream customers were notified of both spills and additional information was
posted on cltwaterblog.org. CLTWater experienced four spills related to eroded
creek banks and ask that customers keep an eye for stream blockages and erosion.
Wastewater Performance Report August 2018 10

Wastewater Treatment Plant Challenges
Charlotte Water's wastewater treatment plants met 99.92 percent of all discharge
limit tests set forth by our NPDES permits but our commitment is 100 percent
compliance. Staff continues to improve maintenance capabilities and overall
performance. Major rehabilitation and improvement projects help maintain
compliance. Future upgrades and expansions are being added.
CLTWater had four permit violations in FY18. Three of these violations were
ammonia violations that occurred at Ashe Plantation Wastewater Treatment Plant
in January 2018. Ashe Plantation experienced severe cold weather that reduced the
ability of the plant to convert ammonia to nitrate. The fourth violation was a CBOD
violation that occurred at Irwin Creek WWTP in April of 2018. CLTWater is currently
investigating the cause of this violation.
There were three (3) incidents where water was released into the creek due to two
power outages and a valve failure. These were discharges of mostly treated
wastewater that didn't complete full treatment. Though not considered violations,
in each situation, operators quickly found and fixed the problem and notified North
Carolina Department of Environmental Resources. After the initial response was
complete, staff evaluated potential causes and solutions for each incident. Quick
solutions were implemented and more in-depth / extensive solutions are identified
as capital needs. No dead fish were found associated with these bypasses. The
gallons that did not receive full treatment was significantly less than one percent
(1 %) of the 78.1 million gallons of water that is treated and safely returned to area
creeks every day.
CLTWater System Protection operates within CLTWater's service area to enforce
federal, state, and local regulations pertaining to discharges to the sanitary sewer,
including protection of workers and treatment processes from pollutants harmful
to people or the environment. System Protection includes the Industrial
Pretreatment Program and the Commercial Source Program.
The Pretreatment Program identifies, permits, and regulates Industrial Users and
others to keep unsuitable discharges out of the wastewater treatment plants. The
Commercial Source Program, also referred to as Flow Free, inspects and regulates
Commercial Users, such as food service establishments, to keep unsuitable
discharges such as fats oils and grease out of the collection system and wastewater
treatment plants.
Wastewater Performance Report August 2018 11

While industrial and commercial compliance is extremely high, identifying sources
of potentially harmful discharges is an ongoing challenge. In fiscal year 2018, the
Trunkline Monitoring program -also continued, enabling CLTWater's System
Protection and Water Quality staff to closely observe what industrial, institutional,
and commercial customers discharge to the wastewater treatment plants, identify
potential problem areas, and protect the collection system, wastewater line
workers, treatment plants and the environment.
0 There were over 200 industrial inspections and site visits in the past fiscal
year.
• As part of the Commercial Source program, food service establishments and
other grease producing businesses are identified and inspected on an annual
basis.
• CLTWater honored 29 local companies with Environmental Excellence
Awards in fiscal year 2018 including:
0 4 Platinum recipients for at least five consecutive years of Gold level
compliance and reporting
0 13 Gold recipients for 100% compliance with permit limits and
reporting, and
0 10 Silver recipients for 90% compliance with permit limits and 100%
compliance with reporting
• CLTWater recorded 261 industrial permit limit violations for samples
collected to Significant Industrial Users (SIU) during the past fiscal year,
resulting in a Notice of Violation, Notice of Non -Compliance, Administrative
Order, or similar assessment.
• 44 Notices of Violation with Civil penalties were assessed to users during the
fiscal year for permit limit exceedances and other violations.
Union County Wastewater Treatment Agreement
Charlotte Water successfully completed an inter -local agreement with Union
County that began in 2014 to provide contracted operation and maintenance of five
Union County wastewater plants. Union County continued to own the wastewater
treatment plants, own and operate the wastewater collection system (separate
from the wastewater treatment plants), set rates, and collect user fees for their
customers during this agreement. The agreement with Union County ended on duly
1, 2018. During the time the agreement was in place, the treatment plants met all
regulatory requirements with satisfactory performance.
Wastewater Performance Report August 2018 12

Wastewater Capacity Needs
In 2007 a study of the McAlpine, Irwin and Sugar creek basins was completed to
help identify our community's future wastewater treatment capacity needs through
the year 2030. Recommendations from the study have resulted in the
implementation of extensive reliability improvements projects at the Irwin, Sugar,
and McAlpine Wastewater Treatment Plants.
Major studies of the Mallard and McDowell sewer basins are nearing completion
and provide recommendations to address existing collection system capacity issues
and provide capacity for future growth in these areas. The Mallard basin study
includes an engineering alternatives analysis of optional projects allowing sewer to
be more effectively conveyed between the treatment plants in order for CLTWater
to meet Inter -Basin Transfer requirements. Both studies include detailed sewer
hydraulic models and populations projections up to 2040 (for the McDowell study)
and 2070 (for the Mallard study).
In recent years CLTWater, Mount Holly, and Belmont entered into Memorandums
of Understanding to create the partnership needed for a new, regional wastewater
plant. CLTWater purchased 180 acres of land at a former Clariant industrial plant
site along with the phosphorus and nitrogen discharge permit allocation associated
with the industrial plant. The agreements and nutrient allocation purchase will
facilitate compliance with the Lake Wylie nutrient TMDL while planning and
construction of the regional plant progresses. An Environmental Impact Statement
was completed with N.C. DEQ in March 2015 and a preliminary engineering report
completed in 2017. CLTWater submitted the NPDES permit application for the new
regional facility, which will treat about 12 mgd with a possible expansion to 25 mgd
at a future date if necessary.
A Central Business District (CBD) Sanitary Sewer Modeling and Evaluation project
was completed that included the CBD and surrounding areas and their projected
growth out to 2040. This project provided an updated sanitary sewer model for
assessing future development and their associated service connections. The
evaluation portion identified improvement alternatives to meet future capacity of
the CBD and developed a phased implementation plan considering capacity
improvement triggers. Currently, there were two immediate pipeline needs
identified, and those projects are moving toward design and installation.
Wastewater Performance Report August 2018 13

CLTWater's Capacity Assurance Program (CAP) was implemented on January 1,
2009. CAP helps CLTWater prevent sanitary sewer overflows (SSOs) that could be
caused by adding too many customers' wastewater flow to an existing pipe.
Developers are encouraged to apply for a CAP review during the early stages of
requesting building permits or rezoning. This review process is performed at no
cost to the applicant. Engineers analyze hydraulic models, past spills in the area and
other field data to verify that there is adequate capacity in the pipes downstream. If
no major sewer capacity limitations are found during the review, applications are
generally approved in 30 days. Some reviews lead to identification of capital
pipeline projects to improve the service level to our current customers as well as
accommodate projected development.
Some project examples identified from the CAP reviews include:
• Ayrsley Gravity Sewer Replacement Phase 2 began construction in 2017. This
is a $2.5 million investment to serve the growing population in the South Tryon
1-485 area.
Doby Creek Sanitary Sewer Improvements is anticipated to be an $11 million
project with a completion in early 2019. These improvements are in the
University City Blvd / 1-85 area.
• Wilmore Drive/ Park Avenue Sanitary Sewer Replacement began
construction in January 2018. These projects are expected to finish by end of 3rd
quarter 2019 at an estimated cost of $5M.
• Irvins Creek Tributary Trunk Line (Lawyers Rd area) is estimated at $2.25
million with a notice to proceed in January 2018 and an anticipated completion
of 2nd quarter 2019.
Little Sugar Creek Tributary Trunk Sewer (North Tryon area) began in January
2018 at an estimated cost of $6 million. Anticipated completion of end of 3rd
quarter 2019.
• Stevens Creek Lift Station, Force Main & Gravity Sewer will serve the Goose
Creek and Stevens Creek drainage basins, which includes the Town of Mint Hill.
The project is the first step in providing public sewer service to an area that is
predominantly on septic systems. This project will also facilitate the removal of a
nearby package wastewater plant. The construction cost is $12.1 M and is
anticipated to begin construction in late summer 2018 and be completed by the
end of 2019.
Wastewater Performance Report August 2018 14

III. Notification
Sanitary sewer overflow and wastewater treatment plant details are included in
Sections V and VI.
This report is available to the users or customers of this system by visiting
http://charlottewater.or. Printed copies are available at the Charlotte -Mecklenburg
Government Center at 600 E. Fourth Street, Charlotte, NC 28202, Charlotte Water
buildings at 4222 Westmont Drive, Charlotte, NC 28217 and at 5100 Brookshire
Boulevard, Charlotte, NC 28216. Customers of this system will receive a summary
version of this report and will be notified of the availability of this comprehensive
version via a bill insert in the September water bill. A news release will be issued to
local media outlets. In addition, the summary version will be translated into Spanish
and advertised during the month of September in a regional Spanish-speaking
newspaper. The Spanish version will also be on the Charlotte Water website.
IV. Certification
I certify under penalty of law that this report is complete and accurate to the best of
my knowledge. I further certify that this report has been made available to the
users or customers of the named system and that those users have been notified
of its availability.
1 _
Angela L e, Director Dat
Charlotte Water
Wastewater Performance Report August 2018 15

V. Listing of Sewer Spills
The following is a list of spills (in gallons) from the public wastewater system that occurred between July 1, 2017 and
June 30, 2018.
Date
Volume
(Gallons)
Volume to
Surface
Water
Surface Water
Name
Fish
Kill?
Address
Primary Cause
7/1/2017
81
0
Lake Norman
No
17720 Largo PI , Cornelius
Pipe Failure
7/1/2017
720
720
Little Sugar
Creek
No
6626 Candlewood Dr
Severe Natural
Condition
7/2/2017
98
0
Steele Creek
No
17730 Youngblood Rd
Pump Station
Equipment
Failure
7/4/2017
1370
1370
Little Hope Creek
No
4801 South By
Pipe Failure
7/5/2017
1260
1260
Walker Branch
No
13005 Asheford Woods Ln
Roots
7/6/2017
2400
2400
Stevens Creek
No
11826 Lawyers Rd, Mint Hill
Other
7/9/2017
488
488
Fourmile Creek
No
3136 Shallowood Ln
Roots
7/14/2017
201,850
201,850
King Branch
No
700 Farmhurst Dr
Pipe Failure
7/15/2017
498
498
Briar Creek
No
5906 Ferndale Pl.
Pipe Failure
7/23/2017
680
680
Little Sugar
Creek
No
6620 Candlewood Dr
Pipe Failure
7/27/2017
1575
1181
Irwin Creek
No
2804 McCombs St
Grease
7/28/2017
3450
3450
Sugar Creek
No
5275 Parkway Plaza By
Roots
8/1/2017
490
490
Taggart Creek
No
3112 Markland Dr
Grease
8/4/2017
90
0
Doby Creek
No
2835 West Sugar Creek Rd
Other
8/4/2017
825
825
Little Sugar
Creek
No
1225 Central Av
Grease
8/4/2017
1380
690
Mc Alpine Creek
No
14215 Ballantyne Corporate PI
Debris In Line
Wastewater Performance Report August 2018 16

Date
Volume
(Gallons)
Volume to
Surface
Water
Surface Water
Name
Fish
Kill?
Address
Primary Cause
8/16/2017
455
455
Little Hope Creek
No
4111 South By
Other
8/18/2017
570
570
Campbell Creek
No
5827 Idlebrook Dr
Debris In Line
8/19/2017
324
0
Toby Creek
No
8650 University City By
Roots
8/22/2017
90
0
Four Mile Creek
No
10205 Rougemont Ln
Debris In Line
8/22/2017
4500
4500
Taggart Creek
No
4611 Denver Av
Grease
8/22/2017
230
230
Lower Little
Sugar Creek
No
6411 Rosecrest Dr
Debris In Line
8/25/2017
94
0
Clarks Creek
No
4700 Lone Tree Ct
Grease
8/28/2017
155
0
Lake Norman
No
17320 Courtside Landing Dr,
Cornelius
Pipe Failure
8/28/2017
350
0
Lake Norman
No
18948 Casual Cay Ln, Cornelius
Pipe Failure
8/29/2017
624
200
Lake Norman
No
18803 Harbor Light Bv,
Cornelius
Pipe Failure
8/30/2017
815
815
Stewart Creek
No
522 Lakewood Av
Other
8/30/2017
243
0
McAlpine Creek
No
4506 Inlet Pointe Ct
Other
9/7/2017
43
0
Mallard Creek
No
325 Caprington Av
Debris In Line
9/14/2017
1500
1500
McAlpine Creek
No
6118 Fair Valley Dr
Pipe Failure
9/19/2017
1270
635
Little Sugar
Creek
No
7800 Antlers Ln
Debris In Line
9/20/2017
555
0
Irwin Creek
No
1417 Tinnin Av
Other
9/22/2017
68
68
McMullen Creek
Tributary
No
3735 Litchfield Rd
Roots
9/25/2017
48
0
Paw Creek
No
8524 Moores Chapel Rd
Roots
9/28/2017
2400
2400
Paw Creek
No
6508 War Eagle Ln
Roots
Wastewater Performance Report August 2018 17

Date
Volume
(Gallons)
Volume to
Surface
Water
Surface Water
Name
Fish
Kill?
Address
Primary Cause
10/2/2017
1450
0
McAlpine Creek
No
5938 Meadow Hill Dr
Grease
10/6/2017
66
0
Mallard Creek
No
8700 Senator Royall Dr
Other
10/6/2017
300
0
Campbell Creek
No
6055 Sunrise Ct
Debris In Line
10/10/201
144
0
Upper Little
Sugar
No
325 Hawthorne Ln
Debris In Line
10/19/201
800
800
Six Mile Creek
No
11030 Golf Links Dr
Debris In Line
10/21/2017
250
250
Briar Creek
Tributary
No
1017 North Wendover Rd
Roots
10/23/2017
130
130
Long Creek
No
9825 Northwoods Forest Dr
Roots
10/24/2017
4,800,000
4,800,000
Mallard Creek
No
210 E Mallard Creek Church Rd
Other
10/29/2017
1180
1180
Toby Creek
Tributary
No
6431 Dougherty Dr
Roots
10/30/2017
140
100
McAlpine Creek
No
9120 East W T Harris By
Debris In Line
10/30/2017
75
0
Mallard Creek
No
5420 Groveton Ct
Roots
10/31/2017
87
0
Toby Creek
No
701 Neal Dr
Roots
11/2/2017
105
0
Briar Creek
No
6555 Morrison By
Debris In Line
11/2/2017
514
514
McAlpine Creek
No
7624 Swans Run Rd
Grease
11/3/2017
1500
1500
Stewart Creek
No
3110 Southwest Blvd
Pipe Failure
11/9/2017
300
0
Lake Norman
No
16211 Lakeside Loop Ln,
Cornelius
Pipe Failure
11/12/2017
54
0
Little Hope
Tributary
No
511 Ebb PI
Debris In Line
11/15/2017
50
0
Little Sugar
Creek
No
400 North Davidson St
Grease
Wastewater Performance Report August 2018 18

Date
Volume
(Gallons)
Volume to
Surface
Water
Surface Water
Name
Fish
Kill?
Address
Primary Cause
11/18/2017
1570
0
Four Mile Creek
No
4345 Rosecliff Dr
Other
11/20/2017
104
104
McAlpine Creek
No
6730 Olde Savannah Rd
Roots
11/22/2017
595
595
Fourmile Creek
No
1400 Ashley Creek Dr,
Matthews
Debris In Line
11/24/2017
730
730
Irwin Creek
No
3128 Allen Rd South
Roots
11/25/2017
1970
1200
Steele Creek
No
2817 O'Hara Dr
Grease
11/25/2017
151
0
Clark Creek
No
9416 Meadowmont View Dr
Grease
11/29/2017
1010
1010
Irwin Creek
No
2520 South By
Debris In Line
11/30/2017
810
810
Little Sugar
Creek
No
923 South Kings Dr
Grease
11/30/2017
230
115
Steele Creek
No
9301 Forsyth Park Dr
Roots
12/2/2017
2460
2220
Paw Creek
No
8924 Old Dowd Rd
Grease
12/3/2017
78
0
Torrence Creek
No
9200 Stratton Farm Rd,
Huntersville
Debris In Line
12/3/2017
22
0
Irwin Creek
No
3443 Wilkinson By
Debris In Line
12/4/2017
5325
3994
Clear Creek
No
10506 Clear Creek Commerce
Dr, Mint Hill
Debris In Line
12/5/2017
380
380
Stewart Creek
No
4701 Wildwood Av
Grease
12/11/2017
630
315
Little Hope Creek
No
4514 Halstead Dr
Debris In Line
12/11/2017
67
0
Clarks Creek
Tributary
No
4928 Benthaven Ln
Grease
12/18/2017
1660
1660
Kennedy Branch
No
2100 Slater Rd
Grease
12/18/2017
740
740
Briar Creek
No
2204 Olde Chantilly Ct
Grease
12/21/2017
98
0
Fourmile Creek
No
11100 Monroe Rd, Matthews
Grease
Wastewater Performance Report August 2018 19

Date
Volume
(Gallons)
Volume to
Surface
Water
Surface Water
Name
Fish
Kill?
Address
Primary Cause
12/27/2017
1810
1810
Irvins Creek
No
3609 Matthews -Mint Hill Rd,
Mint Hill
Grease
12/31/2017
800
800
Paw Creek
No
6727 Glenmoor Dr
Roots
01/02/2018
141
0
Little Sugar
Creek
No
5200 Park Rd
Debris In Line
01/02/2018
2700
1350
McMullen Creek
No
4012 Quail Forest Dr
Grease
01/06/2018
290
280
Little Sugar
Creek
No
6425 Rosecrest Dr
Debris In Line
01/07/2018
10160
8128
Clems Branch
No
16790 Lancaster Highway
Pipe Failure
01/08/2018
900
0
Little Sugar
Creek
No
900 East Stonewall St
Debris In Line
01/09/2018
1600
800
Little Sugar
Creek
No
425 Towne Centre Bv, Pineville
Grease
01/10/2018
180
0
Briar Creek
No
1600 Park Dr
Debris In Line
01/10/2018
30
0
Little Sugar
Creek
No
1249 Echo Glen Rd
Debris In Line
01/14/2018
250
250
Little Sugar
Creek
No
9105 Essen Ln
Debris In Line
01/21/2018
600
570
Briar Creek
No
3514 Enfield Rd
Pipe Failure
01/23/2018
1425
1425
Briar Creek
No
3500 East Independence By
Grease
01/24/2018
385
385
McAlpine Creek
No
14704 Ballantyne Glen Wy
Grease
01/27/2018
820
820
Briar Creek
No
1426 Carolyn Dr
Debris In Line
01/30/2018
180
0
Lake Norman
No
19932 Sandyedge Dr, Cornelius
Pipe Failure
01/31/2018
660
100
Toby Creek
No
7401 Feathers Place
Vandalism
Wastewater Performance Report August 2018 20

Date
Volume
(Gallons)
Volume to
Surface
Water
Surface Water
Name
Fish
Kill?
Address
Primary Cause
02/04/2018
2005
2005
Irvins Creek
No
5321 Fowler Farm Rd, Mint Hill
Roots
02/07/2018
118
118
McMullen Creek
Tributary
No
7601 Red Oak Ln
Roots
02/08/2018
65
0
Lake Norman
No
16933 Jetton Rd, Cornelius
Other
02/09/2018
142
71
Four Mile Creek
No
4717 Piper Glen Dr
Debris In Line
02/13/2018
2020
1010
Irwin Creek
No
1412 Oaklawn Ave
Pipe Failure
02/13/2018
294
270
Irwin Creek
No
3923 Atlas Dr
Grease
02/13/2018
200
0
Clems Branch
No
16790 Lancaster Highway
Pump Station
Equipment Failure
02/14/2018
5880
5880
Clems Branch
No
16790 Lancaster Highway
Pump Station
Equipment Failure
02/14/2018
1500
0
McAlpine Creek
No
7801 Ballantyne Commons Py
Grease
02/14/2018
680
510
McAlpine Creek
Tributary
No
7942 Oratorio PI
Grease
02/16/2018
1485
1485
Stewart Creek
No
2725 Seabrook Dr
Pipe Failure
02/18/2018
291
291
Little Sugar
Creek Tributary
No
4117 Ashton Dr
Roots
02/21/2018
1505
752.5
Lower Little
Sugar Creek
No
7820 Forest Pine Dr
Grease
02/21/2018
595
0
Upper Little
Sugar Creek
No
230 Alpha Mill Ln
Debris In Line
02/23/2018
50
0
McAlpine Creek
No
2746 Quailrush Rd
Roots
02/23/2018
430
0
Campbell Creek
No
5760 Albemarle Rd
Grease
Wastewater Performance Report August 2018 21

Date
Volume
(Gallons)
Volume to
Surface
Water
Surface Water
Name
Fish
Kill?
Address
Primary Cause
02/28/2018
260
260
Little Sugar
Creek
No
550 S Caldwell St
Grease
03/02/2018
428
200
Clems Branch
No
11630 Clems Branch Dr
Roots
03/04/2018
360
300
Paw Creek
No
720 Claremont Rd
Roots
03/06/2018
1240
0
Reedy Creek
No
8735 Woodhill Manor Ct
Grease
03/08/2018
295
0
Briar Creek
No
1167 Phil Oneil Dr
Grease
03/08/2018
590
590
Four Mile Creek
No
4525 Old Course Dr
Roots
03/10/2018
150
0
McDowell Creek
No
6833 Tanners Creek Dr,
Huntersville
Grease
03/10/2018
126
126
Briar Creek
No
2135 Brookwood Rd
Roots
03/13/2018
141
141
Little Sugar
Creek
No
7820 Forest Pine Dr
Grease
03/18/2018
360
360
Edwards Branch
No
2700 East Independence By
Grease
03/19/2018
20
0
McMullen Creek
No
11501 Park Rd
Grease
03/24/2018
400
0
Coffey Creek
No
2607 West Arrowood Rd
Debris In Line
03/28/2018
100
0
Irwin Creek
No
4937 Sunset Rd
Grease
03/28/2018
300
300
Sugar Creek
No
6108 Coolbrook Ct
Debris In Line
03/28/2018
200
0
Mallard Creek
No
3800 Prosperity Church Rd
Debris In Line
03/29/2018
540
540
Irvins Creek
No
10530 Northeast Py, Matthews
Vandalism
03/31/2018
54000
30000
Big Sugar Creek
No
427 Main St, Pineville
Other
04/02/2018
600
570
Paw Creek
No
5205 Windy Valley Dr
Debris In Line
04/04/2018
170
0
McAlpine Creek
No
4508 Parview Dr North
Debris In Line
04/06/2018
106
50
Four Mile Creek
No
204 Demaree Ln, Matthews
Debris In Line
04/09/2018
30
0
McAlpine Creek
No
6601 Bevington Brook Ln
Roots
Wastewater Performance Report August 2018 22

Date
Volume
(Gallons)
Volume to
Surface
Water
Surface Water
Name
Fish
Kill?
Address
Primary Cause
04/11/2018
110
110
McAlpine Creek
No
5101 Gorham Dr
Roots
04/16/2018
460
230
McAlpine Creek
No
6725 Old Providence Rd
Pipe Failure
04/20/2018
830
830
Little Sugar
Creek
No
1116 S Kings Dr
Grease
04/23/2018
15,431,5
05
15,431,505
Long Creek
Yes
4100 Oakdale Rd.
Pipe Failure
04/24/2018
290
290
Irwin Creek
No
1223 Badger Ct
Debris In Line
04/25/2018
1060
1060
Little Sugar
Creek
No
1019 N Brevard St
Debris In Line
04/26/2018
20
0
McMullen Creek
No
3639 Quail View Rd
Roots
04/29/2018
27000
20250
Long Creek
No
4100 Oakdale Rd
Other
05/03/2018
16420
8210
Steele Creek
No
13001 General Dr
Vandalism
05/03/2018
16500
16500
Little Sugar
Creek
No
500 North Davidson St
Inflow and
Infiltration
05/04/2018
60
0
Flat Branch
No
7413 Seton House Ln
Other
05/09/2018
30
0
Briar
No
7300 Linda Lake Dr
Roots
05/11/2018
290
290
Four Mile Creek
No
10308 Four Mile Creek Rd
Debris In Line
05/18/2018
900
0
Irwin Creek
Tributary
No
2425 Westhampton Dr
Debris In Line
05/20/2018
300
300
Little Sugar
Creek
No
6620 Candlewood Dr
Inflow and
Infiltration
05/21/2018
1420
1420
Edwards Branch
No
3100 Winterfield PI
Vandalism
05/22/2018
850
850
Steele Creek
No
3935 Westinghouse By
Roots
05/27/2018
185
0
Upper Little
Sugar Creek
No
1400 E 3rd St
Debris In Line
Wastewater Performance Report August 2018 23

Wastewater Performance Report August 2018 24
Volume to
Date
Volume
Surface
Surface Water
Fish
Address
Primary Cause
(Gallons)
Name
Kill?
Water
17903 Peninsula Club Dr
Pump Station
06/1/2018
315
0
Lake Norman
No
North, Cornelius
Equipment Failure
Briar Creek
06/2/2018
925
700
Tributary
No
3500 Shamrock Dr
Grease
06/3/2018
420
0
Paw Creek
No
5905 Natick Dr
Grease
06/4/2018
164
0
Sugar Creek
No
9140 Arrowpoint By
Roots
06/4/2018
725
725
Dairy Branch
No
414 Iverson Wy
Debris In Line
06/5/2018
630
630
Clarke Creek
No
6444 Prosperity Church Rd
Grease
17821 Spinnakers Reach Dr,
06/7/2018
445
0
Lake Norman
No
Cornelius
Other
06/14/2018
71
0
Torrence Branch
No
18318 McKee Rd
Other
Little Sugar
06/15/2018
2575
2575
Creek
No
1314 S College St
Pipe Failure
06/18/2018
85
0
Gum Branch
No
628 Fielding Rd
Roots
Wastewater Performance Report August 2018 24

TOTAL NUMBER OF FY2018 COLLECTION SYSTEM SPILLS: 164
Volume Safely Collected, Treated & Discharged During Fiscal Year 2018: 28,485,000,000 Gallons (99.927%)
Volume Spilled:
20,670, 684 Gallons
Wastewater Performance Report August 2018 25
Volume to
Volume
Surface Water
Fish
Date
Surface
Address
Primary Cause
(Gallons)
Name
Kill?
Water
Little Sugar
06/20/2018
115
115
Creek
No
5217 Buckingham Dr
Pipe Failure
Little Sugar
06/22/2018
480
480
Creek Tributary
No
2825 Eastburn Rd
Grease
06/28/2018
510
255
Irwin Creek
No
3527 Durham Ln
Grease
Little Sugar
06/28/2018
1785
1785
Creek
No
6510 Candlewood Dr
Grease
TOTAL NUMBER OF FY2018 COLLECTION SYSTEM SPILLS: 164
Volume Safely Collected, Treated & Discharged During Fiscal Year 2018: 28,485,000,000 Gallons (99.927%)
Volume Spilled:
20,670, 684 Gallons
Wastewater Performance Report August 2018 25

VI. Permit Compliance and Reporting Violations, by plant
Ashe Plantation WWTP -- NPDES Permit #NC0065749
MONTH
jPERMIT LIMIT VIOLATIONS
REPORTING REQUIREMENT VIOLATIONS
NA
NA
NA
July, 2017
NA
NA
August, 2017
September, 2017
NA
October, 2017
_
NA
NA
November, 2017
NA
NA
December, 2017
NA
NA
January, 2018
3 Total - 2 Daily Max Ammonia and 1
Monthly Average Ammonia Violations
NA
February, 2018
NA
NA _
March, 2018
NA
NA
April, 2018
NA
NA
May, 2018
NA
NA
NA
June, 2018
NA
Irwin Creek WWTP -- NPDES Permit #NC0024945
MONTH
PERMIT LIMIT VIOLATIONS
REPORTING REQUIREMENT VIOLATIONS
July, 2017
NA
NA -
NA
NA
NA
NA
NA
NA
NA
NA
NA
August, 2017
September, 2017
October, 2017
November, 2017
_
NA
December, 2017
NA
January, 2018
NA
February, 2018
NA
NA
March, 2018
NA
NA
Wastewater Perfonnance Report August 2018 26

April, 2018 CBOD Weekly Average Violation NA
May, 2018 NA NA
lune, 2018 NA NA
Mallard Creek WRF -- NPDES Permit #NC0030210
July, 2017
PERMIT LIMIT VIOLATIONS_ I
NA
NA
NA
NA
NA
NA
NA
NA
L REPORTING REQUIREMENT VIOLATIONS
NA
NA
NA
NA
NA
NA
NA
NA
August, 2017
September, 2017
October, 2017
November, 2017
December, 2017
January, 2018
February, 2018
March, 2018
NA
NA
April, 2018
NA
NA
May, 2018
NA
NA
June, 2018
NA
NA
McAlpine Creek WWTF -- NPDES Permit #NC0024970
MON
PERMIT LIMIT VIOLATIONSL61000000-i-
NA
July,2017 NA
August, 2017
NA
NA
September, 2017
NA
NA
October, 2017
NA
NA
November, 2017
NA
NA
December, 2017
NA
NA
January, 2018
NA
NA
February, 2018
NA
NA
Wastewater Performance Report August 2018 27

March, 2018 NA NA
April, 2018 NA NA
May, 2018 _ NA NA
June, 2018 -- NA NA
McDowell Creek WWTP -- NPDES Permit #NC0036277
MONTH
July, 2017
PERMIT LIMIT VIOLATIONS
NA
NA
NA
NA
REPORTING REQUIREMENT VIOLATIONS
NA
NA
NA
August, 2017
September, 2017
October, 2017
NA
November, 2017
NA
NA
December, 2017
NA
NA
January, 2018
NA
NA
February, 2018
NA
NA
March, 2018
NA
NA
April, 2018
NA
NA
May, 2018
NA
NA
June, 2018
NA
NA
Oxford Glen Plantation WWTP -- NPDES Permit #NC0065384
MONTH
PERMIT LIMIT VIOLATIONS
REPORTING REQUIREMENT VIOLATIONS
July, 2017
NA
NA
NA
NA
NA
NA
August, 2017
September, 2017
NA
October, 2017
NA
November, 2017
NA
NA
December, 2017
NA
NA
January, 2018
NA
NA
Wastewater Performance Report August 2018 28
0 0

February, 2018
NA
NA
March, 2018
NA
NA
April, 2018
NA
NA
May, 2018
NA
NA
June, 2018
NA
NA
Sugar Creek WWTP -- NPDES Permit #NC0024937
MONTH
PERMIT LIMIT VIOLATIONS
NA
REPORTING REQUIREMENT VIOLATIONS
NA
NA
NA
July, 2017
August, 2017
NA
September, 2017
NA
October, 2017
NA
NA
November, 2017
NA
NA
December, 2017
NA
NA
January, 2018
NA
NA
February, 2018
NA
NA
March, 2018
NA
NA
April, 2018
NA
NA
May, 2018
NA
NA
June, 2018
NA
NA
Wastewater Performance Report August 2018 29