NC0069523_Email_20220822

UNION
OUNTY
WATER
Wastewater
Performance
Summary
Fiscal Year 2021-2022
unioncountync.gov/water

Table of Contents
1.0 Introduction 1
2.0 Definitions 2
3.0 3 Synopsis of Water Reclamation Facilities 3
3.1 Twelve Mile Creek Water Reclamation Facility 3
3.2 Crooked Creek Water Reclamation Facility 3
3.3 Hunley Creek Water Reclamation Facility 3
3.4 Olde Sycamore Water Reclamation Facility 3
3.5 Tallwood Estates Water Reclamation Facility 3
3.6 Grassy Branch Water Reclamation Facility 3
Table 3-1 4
Table 3-2 5
Table 3-3 5
Table 3-4 6
Table 3-5 6
Table 3-6 7
4.0 Biosolids Management 8
5.0 Synopsis of Wastewater Collection System 9

Dear Customer,
We are proud to share this year's Annual Wastewater Performance Summary with you.
This report outlines last year's wastewater treatment efforts. Included are details about
your treatment facilities, collection system performance, and how it compares to
standards set by regulatory agencies.
Wastewater is all the water that leaves the inside of your home or business through
sinks, toilets, washing machines, etc. and enters Union County's wastewater (sewage)
collection system. The wastewater then flows through pipes into the County's regional
sewage system, where it is treated to meet federal and state water quality standards.
We have a responsibility to manage our water resources in a sustainable manner to
ensure there is sufficient water and its quality is protected. While we are committed to
conserving resources and protecting the environment through wastewater treatment,
this can only occur if it is done in a safe manner. Protection of public health and safety
is, and must remain, our first priority. We are proud of our achievements to date,
but we aim to constantly improve the way we manage the wastewater generated
by our residents.
If you have any questions regarding this report or your water, please contact us at
704.296.4210. If you want additional information, please visit our website at:
unioncountync.gov
Sincerely,
Andrew Neff, P.E.
Water fr Wastewater Division Director
4600 Goldmine Road, Monroe, NC 28110

1.0 Introduction
Nature has an amazing ability to cope with small amounts of
water waste and pollution, but it would be overwhelmed if
we didn't treat the wastewater and sewage produced every
day before releasing it back to the environment. Treatment
plants reduce pollutants in wastewater to a level nature can
handle. Wastewater is used water. It includes substances such
as human waste, food scraps, oils, soaps, and chemicals.
In homes, this may be water from sinks, showers, bathtubs,
toilets, washing machines, and dishwashers. Businesses and
industries also contribute their share of used water that must
be cleaned.
If wastewater is not properly treated, the environment and
human health can be negatively impacted. These impacts
include harm to fish and wildlife populations, oxygen
depletion, restrictions on recreational water use, and
contamination of drinking water.
House Bill 1160, the Clean Water Act of 1999, was ratified
by the North Carolina General Assembly on July 20, 1999
and signed into law by the Governor on July 21, 1999.
This legislation placed significant reporting requirements
on entities that own or operate wastewater systems. The
purpose of this Performance Summary is to establish
compliance with this rule.
Union County Water (UCW) is charged with the management,
operation and maintenance of the County's sanitary sewer
system. During fiscal year 2021-2022 the wastewater system
was comprised of five active water reclamation facilities
(WRF), 53 wastewater pumping stations, and more than 737
miles of pipe with over 45,000 connections. In addition
to the five WRF's, which have a combined rated treatment
capacity of 9.65 million gallons per day (MGD), the County,
through contractual agreement, has 2.65 MGD and 3.0
MGD of purchased capacity at the City of Monroe WRF and
Charlotte's McAlpine Creek WRF.
UNIONCOUNTY I Wastewater Performance Summary Fiscal Year 2021-2022 1

2.0 Definitions
For the purposes of this performance report
the following definitions apply:
AEROBIC
A condition in which atmospheric or dissolved molecular
oxygen is present in the aquatic environment.
BIOLOGICAL NUTRIENT REMOVAL
The process of removing nitrogen and phosphorus from
wastewater using biological processes as opposed to
chemical means.
BIOSOLIDS
A primarily organic solid product, produced by wastewater
treatment processes that can be beneficially recycled. The
word biosolids replaces the word sludge.
BOD — BIOCHEMICAL OXYGEN DEMAND
The rate at which organisms use the oxygen in water or
wastewater while stabilizing decomposable organic matter
under aerobic conditions. The BOD test is a procedure that
measures the rate of oxygen use under controlled conditions
of time and temperature. BOD is typically used to express the
"strength" of wastewater.
CL2 — CHLORINE RESIDUAL
The amount of chlorine present in the final effluent after
disinfection. Typically measured in micrograms per liter or
milligrams per liter.
D.O. — DISSOLVED OXYGEN
Molecular (atmospheric) oxygen dissolved in a liquid.
EFFLUENT
Treated wastewater flowing from the treatment system.
EXTENDED AERATION
A type of wastewater treatment facility in which the
wastewater is retained and treated for a minimum of 24 hours
at design flow before discharge occurs.
INFLOW AND INFILTRATION (I&I)
Extraneous water that enters the sanitary sewer system
through openings and/or defects in the collection system.
FECAL COLIFORM
The coliform (bacteria) found in the feces of warm-blooded
animals. The presence of coliform-group bacteria is an
indication of possible pathogenic bacterial contamination.
MGD — MILLION GALLONS PER DAY
Volumetric measurement of flow converted to millions.
Example: 150,000 gallons per day (gpd) / 1,000,000 = 0.150
MGD.
NH3 — NITROGEN AS AMMONIA
A compound found naturally in wastewater. The compound is
produced by the deamination of organic nitrogen containing
compounds
NPDES PERMIT — NATIONAL POLLUTANT
DISCHARGE ELIMINATION SYSTEM
Permits, required by the Federal Water Pollution Control Act
Amendments of 1972, which regulate discharges to surface
waters.
PH
The expression of the intensity of the basic or acidic
condition of a liquid.
PUMP STATION
A holding tank with pumps that forces wastewater uphill
when flow by gravity is not possible.
RECLAIMED WATER
Highly treated wastewater that has undergone advanced
treatment processes to re- move solids, organics, and
pathogens meeting the State's Health and Safety Standards
for Beneficial Reuse.
SOC
Special Order of Consent: An Order that establishes
a schedule of corrective actions necessary to achieve
compliance and alternative limitations that will be effective
until corrective actions are completed or until the completion
date specified in the Order, whichever comes first.
SSO
Acronym for "sanitary sewer overflow"
TSS — TOTAL SUSPENDED SOLIDS
Particles suspend-ed in a liquid.
TURBIDITY
The measurement of the clearness or cloudiness of a liquid.
2 Wastewater Performance Summary Fiscal Year 2021-2022 i UNIONCOUNTY

3.0 Synopsis of Water Reclamation
Facilties (Fiscal Year 2021-2022)
During fiscal year 2021-2022 Union County Water (UCW)
operated and maintained a total of five active water
reclamation facilities and maintained one inactive facility.
Although each permit requires facility visitation daily, excluding
weekends and holidays, UCW's water reclamation facilities are
checked seven days per week, 365 days per year. All treatment
facilities are equipped with emergency back-up power
generators. In addition to SCADA, each facility has both audible
and visual trouble alarms. Water reclamation facility staff rotate
on -call duty for after hour situations that may arise.
A brief overview of each facility and a performance
summary table for each facility is provided herein.
TWELVE MILE CREEK WATER
RECLAMATION FACILITY
Permit No. NC0085359.
Twelve Mile Creek WRF is an extended aeration facility
that uses biological nutrient removal and tertiary filtration.
Disinfection is accomplished via UV (ultraviolet light). Twelve
Mile effluent is discharged into Twelve Mile Creek, which is
part of the Catawba River Basin. The facility is permitted to
discharge up to 7.5 MGD of treated wastewater. Twelve Mile
Creek WRF is located at 8299 Kensington Drive and serves
Waxhaw as well as portions of Indian Trail, Stallings and
Weddington. Please refer to Table 3-1.
CROOKED CREEK WATER
RECLAMATION FACILITY
Permit No. NC0069841.
Crooked Creek WRF is an extended aeration facility that
uses tertiary filtration. Disinfection is accomplished via UV
(ultraviolet light). Crooked Creek effluent is pumped over
17,000 feet to discharge into the North Fork Crooked Creek
which lies in the Yadkin Pee Dee River Basin. This facility is
permitted to discharge up to 1.9 MGD of treated wastewater.
Crooked Creek is located at 4015 Sardis Church Road and
serves the Indian Trail, Lake Park and Stallings areas. Please
refer to Table 3-2.
HUNLEY CREEK WATER
RECLAMATION FACILITY
Permit No. NC0072508.
This facility was taken out of service May 10, 2006, via a flow
diversion project and remains inactive. Hunley Creek is
located at 6913 Stevens Mill Road. Due to "Inactive Status" of
the Hunley Creek WRF, there was no data to report to Table
3-3 for fiscal year 2021-2022.
OLDE SYCAMORE WATER
RECLAMATION FACILITY
Permit No. WQ0011928.
Olde Sycamore is an extended aeration facility with tertiary
filtration. Disinfection is accomplished via UV (ultraviolet
light). This facility is permitted to discharge up to 0.150 MGD
(150,000 per gallons per day) of treated wastewater. Olde
Sycamore was "up -fitted" in early 2012 to improve operating
efficiency (reduced electrical consumption) by implementing
usage of fine -bubble diffused aeration versus the former
"coarse -bubble" aeration. Olde Sycamore serves the Olde
Sycamore Golf Community located off of Highway 218 and
Rock Hill Church Road. Olde Sycamore effluent is discharged
to a man-made impoundment from which it is then pumped
onto the Olde Sycamore Golf Course as a source of irrigation.
Please refer to Table 3-4.
TALLWOOD ESTATES
WATER RECLAMATION FACILITY
Permit No. NC0069523.
Tallwood is an extended aeration facility with cloth -disc
filtration. Disinfection is accomplished via UV (ultraviolet
light). This facility is permitted to discharge up to 0.05 MGD
(50,000 gallons per day) of treated wastewater. The original
Tallwood plant was replaced in 2012 with a new facility.
Tallwood WRF is located within the Tallwood subdivision on
Brief Road. It also serves the Belk Boy Scout Camp. Tallwood
effluent is discharged to Clear Creek, which lies in the Yadkin
Pee Dee River Basin. Please refer to Table 3-5.
GRASSY BRANCH WATER
RECLAMATION FACILITY
Permit No. NC0085812.
Grassy Branch is an extended aeration facility with tertiary
filtration. Disinfection is accomplished via UV (ultraviolet
light). This facility is permitted to discharge up to 0.05 MGD
(50,000 gallons per day) of treated wastewater. Grassy Branch
is located at 1629 Old Fish Road and currently serves the
Unionville Elementary, Piedmont Middle and Piedmont High
Schools as well as one individual residence, Loxdale Farms
Subdivision, and Smith Field Subdivision. Grassy Branch
effluent is discharged to Crooked Creek, which lies in the
Yadkin Pee Dee River Basin. Please refer to Table 3-6.
UNIONCOUNTY I Wastewater Performance Summary Fiscal Year 2021-2022 3

Table 3-1
Twelve Mile Creek Water Reclamation Facility
NPDES Permit #: NCOO85359
Fiscal Year: 2021-2022 Effluent Limits and Performance
Parameter Limit
FLOW 7.5 MGD
pH 6-9 SU
Jul '21 Aug '21 Sep '21 Oct '21 Nov '21 Dec '21 Jan '22 Feb '22 Mar '22 Apr '22 May '22 Jun'22
5.42 5.48 5.35 5.10 5.11 5.59 6.56 6.20 6.76 6.42 5.84 5.46
7.5-7.6 7.5-7.8 7.3-8.3 7.2-7.8 7.1 7.2-7.4 7.2-7.3 7.2- 7.3 7.0- 7.6 7.1-7.3 7.1-7.4 7.0-7.5
BOD5
Summer 5 mg/l
(Apr.1 - OCT.31)
3.83 2.03 1.05 3.0 - - 1.04 2.07 1.46
Winter 10 mg/l
(Nov.1 - Mar.31)
1.9 3.84 3.26 3.41 2.67
Ammonia
Nitrogen 1 mg/l
Summer
Winter 2 mg/l
0.28 0.20 0.33 0.24 - - - - - 0.13 0.13 0.21
0.35 0.47 1.46 2.59 0.15
Total Suspended 30 mg/l
Residue
3.29 1.01 0.27 2.87 1.76 3.38 2.05 1.70 4.08 1.75 3.63 2.33
Fecal Coliform 200/100
ml
Dissolved Oxygen > 6 mg/I
Copper
1.38 1.62 1.27 1.18 1.10 1.33 1.54 1.11 1.51 1.05 1.26 1.56
8.05 8.11 8.03 8.06 7.93 7.96 8.12 8.31 8.81 9.26 8.39 8.44
2.3 - 4.4 - 4.0 - 5.0
Zinc
175.0 ug/l
28 - - 58 - - 24 - - 70
Total Phosphorous 41.7 #/
Maximum Month day
4.06 4.12 1.21 5.37 4.86 7.43 13.69 11.89 10.71 11.91 13.63 9.47
Total Phosphorus
12 Month Rolling
Average
20.85#/
day
13.19 11.58 10.6 9.83 9.0 9.12 9.18 9.0 8.69 8.92 8.63 8.36
Permit Violations: February 2022 violation for exceeding the monthly average ammonia limit
4 Wastewater Performance Summary Fiscal Year 2021-2022 I UNIONCOUNTY

Table 3-2
Crooked Creek Water Reclamation Facility
NPDES Permit #: NCOO69841
Fiscal Year: 2021-2022 Effluent Limits and Performance
Parameter Limit
FLOW 1.900 MGD
pH 6-9 St
Cl2 17 ug/
BOD5
Summer 5 mg/l
(Apr.1 - OCT.31)
Winter
(Nov.1 - Mar.31)
10 mg/l
Ammonia
Nitrogen
Summer
2 mg/l
Winter 4 mg/l
Total Suspended
Residue
Fecal Coliform
30 mg/l
200/100
ml
Dissolved Oxygen > 6 mg/l
Jul'21 Aug'21 Sep'21 Oct'21 Nov'21 Dec'21 Jan'22 Feb '22 Mar '22 Apr'22 May '22 Jun'22
0.75 0.79 0.76 0.68 0.63 0.87
1.21 1.01 1.09 0.97 0.74 0.74
7.0-7.4 6.9-7.6 6.9- 7.4 6.9-7.4 7.1-7.7 7.0-7.4 7.2-7.4 7.2-7.4 6.8-7.6 6.7-7.3 7.0-7.3 6.7-7.5
0 0 0 0 0
0 0
0
0
0
0
0
1.14 1.98 1.18 0.47
2.82 1.45 1.1.96
0.65 3.84
3.41 1.88 2.23
0.19 0.21 0.27 0.21
0.28 0.24 0.24
.016 0.13
0.19 0.20 0.24
0.51 0.74 0.22 0 2.08 0.73
4.17 0.20 1.33 2.74 0 1.83
1.23 1.83 1.55 1.00 1.15 2.22
1.00 2.37 1.58 3.89 1.39 2.91
7.70 7.70 7.90 8.50 8.59 9.33
Permit Violations: There were no violations for this period.
Table 3-3
Hunley Creek Water Reclamation Facility
NPDES Permit #: NCO0725O8
Fiscal Year: 2021-2022 Effluent Limits and Performance
Parameter Limit
FLOW 0.231 MGD
pH 6-9 SU
Cl2 20 ug/l
BOD5 5 mg/l
Summer (Apr.1 - OCT.31)
Winter (Nov.1 - Mar.31) 10 mg/l
Ammonia Nitrogen 2 mg/l
Summer MI
Winter ! 4 mg/l
Total Suspended Residue 30 mg/l
Fecal Coliform
Dissolved Oxygen
200/100 ml
> 5 mg/l
9.48 9.31 9.33 9.22 8.40 8.17
Hunley Creek WRF is currently not in service.
This facility was listed as inactive as of May 2006; therefore,
there is no data reported for this fiscal year.
Permit Violations: There were no violations during this period.
UNIONCOUNTY I Wastewater Performance Summary Fiscal Year 2021-2022 5

Table 3-4
Olde Sycamore Water Reclamation Facility
NPDES Permit #: WQ0011928
Fiscal Year: 2021-2022 Effluent Limits and Performance
Parameter
FLOW
pH
Limit
0.150 MGD
Ammonia
Nitrogen
4 mg/l
Total Suspended
Residue
Fecal Coliform
Turbidity
5 mg/l
14/100 ml
> 10 NTU
Jul '21 Aug '21 Sep '21 Oct '21 Nov '21 Dec '21 Jan '22 Feb '22 Mar '22 Apr '22 May '22 Jun '22
0.028 0.029 0.029 0.030 0.030 0.037 0.042 0.042 0.043 0.043 0.042 0.047
6.8-7.3 6.9-7.3 6.8-7.3 6.9-7.5 6.9-7.3 6.8-7.6 7.0-7.5 7.1-7.5 6.7-7.3 6.8-7.1 6.8-7.4 6.8-7.6
<2 <2 <2 <2 <2 <2 2.2 2.0 2.0 <2 <2 <2
0.33 0.22 <0.10 0.17 <0.10 <0.10 0.23 0.06 0.56 0.11 <0.10 0.28
<2.6 <2.7 <2.7 <2.7 <2.7 3.1 <2.7 <2.7 <2.7 <2.7 <2.7 <2.7
<1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1
0.2 0.3 0.3 0.3 0.3 1.9 1.1 1.4 0.6 0.8 0.8 0.3
Permit Violations: There were no violations for this period.
Table 3-5
Tallwood Estates Water Reclamation Facility
NPDES Permit #: NC0069523
Fiscal Year: 2021-2022 Effluent Limits and Performance
Parameter Limit
0.050 MGD
pH
6-9 St.
BOD5
Summer 5 mg/l
(Apr.1 - OCT.31)
Winter
(Nov.1 - Mar.31)
10 mg/l
Ammonia
Nitrogen
Summer
2 mg/l
Winter 4 mg/l
Total Suspended
Residue
Fecal Coliform
30 mg/l
200/100
ml
Dissolved Oxygen > 6 mg/l
Jul'21 Aug '21 Sep '21 Oct '21 Nov '21 Dec '21 Jan '22 Feb '22 Mar '22 Apr '22 May '22 Jun '22
0.017 0.015 0.015 0.015 0.016 0.081 0.030 0.025 0.035 0.033 0.018 0.016
7.3-7.6 7.5-7.6 7.1-7.7 7.2-7.7 7.4-7.7 7.3-7.5 7.3-7.6 7.4-7.7 7.2-7.5 7.1-7.6 7.3-7.5 7.3-7.7
0 0.51 0 0 - - - - - 2.71 0.43 0.55
0 0.77 0.55 0 1.39
0.08 0.30 0.15 0.05 - - 0.11 0.30 0.19
0.05 0.06 0.28 0.08 0.24
0 0 0 0 0 0 0 0 0 0 0 0
1 1 1 1 3.2 1 1 1 1 3.1 1.69 1.18
7.33 7.76 7.91 7.91 8.88 9.44 10.11 10.54 9.81 9.59 8.78 8.20
Permit Violations: There were no violations for this period.
6 Wastewater Performance Summary Fiscal Year 2021-2022 I UNIONCOUNTY

Table 3-6
Grassy Branch Water Reclamation Facility
NPDES Permit #: NCOO85812
Fiscal Year: 2021-2022 Effluent Limits and Performance
Parameter
FLOW
pH
Limit
0.050 MGD
C2
BOD5
Summer
(Apr.1 - OCT.31)
5 mg/l
Winter
(Nov.1 - Mar.31)
10 mg/l
Ammonia
Nitrogen
Summer
2 mg/l
Winter 4 mg/l
Total Suspended 30 mg/l
Residue
F200/100
ec rm
ml
Dissolved Oxygen > 6 mg/l
Jul'21 Aug '21 Sep '21 Oct '21 Nov '21 Dec '21 Jan '22 Feb '22 Mar '22 Apr '22 May '22 Jun '22
0.018 0.032 0.031 0.033 0.032 0.035 0.063 0.060 0.063 0.054 0.032 0.019
7.2-7.4 7.1-7.5 7.0-7.4 6.9-7.3 6.9-7.3 6.9-7.6 7.0-7.5 6.9-7.5 6.4-7.6 6.8-7.6 6.7-7.3 7.2-7.4
0 0 0 0 0 0 0 0 0 0 0 0
0.73 1.3 0.52 1.9 - - - - - 2.6 4.11 0.62
3.18 2.29 4.70 4.84 4.33
0.13 0.35 0.47 0.36 - - - - - 0.78 0.60 0.22
0.91 0.11 0.56 0.47 0.62
2.69 1.49 3.64 0 5.07 8.16 5.62 5.45 4.65 5.56 7.52 0
1 1.82 5.59 14.0 2.22 2.90 1 1.32 1 1 1.60 1.64
8.18 8.13 8.46 8.63 9.78 10.23 11.62 11.73 9.96 9.55 9.45 8.16
Permit Violations: In January, February, March and April the monthly flow limit was exceeded. In May, the weekly BOD average limit was exceeded.
UNIONCOUNTY 1 Wastewater Performance Summary Fiscal Year 2021-2022 7

4.0 Biosolids Management
(Fiscal Year 2021-2022)
Portions of the biosolids are managed and disposed of in
accordance with Permit No. ND0089044 issued by the South
Carolina Department of Health and Environmental Control. The
solids are aerobically digested and then applied as fertilizer to
permitted sites. The solids are considered stabilized and thus
suitable for land application when the volatile solids content is
reduced by 38%. If this 38% volatile solids reduction cannot be
achieved, then alkaline stabilization, injection or incorporation is
employed to ensure permit compliance. Union County Water,
through its biosolids contractor, land applied approximately
2.52 million gallons of biosolids. Union County also
mechanically dewatered 9225.19 tons of biosolids, using
7477.97 tons for composting and 1747.22 tons were disposed of
at the Anson Regional landfill.
What Are Biosolids?
Biosolids are the nutrient -rich, organic by-product of
the wastewater treatment process. When treated and
managed appropriately, they can be beneficially used
for a number of purposes, such as a fertilizer to improve
and maintain productive soils and stimulate plant
growth. Biosolids are one of the most studied materials
that have ever been regulated by the U.S. Environmental
Protection Agency (USEPA).
Sewer Lines Cleaned
Smoke Testing
Easement Maintenance
Feet
5.0 Synopsis of Wastewater
Collection System
(Fiscal Year 2021-2022)
Permit No. WOCS00054. UCW currently operates and maintains
over 737 linear miles of sewer mains, including force mains, and
53 wastewater pumping stations that provide service to more
than 45,000 accounts. All pump stations are equipped with both
audible and visual alarms as well as telemetry which alert staff
when alarm conditions are present. Inspections of all pump
stations meet or exceed state requirements. Emergency auxiliary
power is provided to all stations via portable or permanent
mounted generators. Union County personnel are on -call and
available 24 hours a day, seven days a week, 365 days a year.
Union County Water is required by state permit to clean a
minimum of 10% of the collection system annually to prevent
and/or reduce backups and overflows. Staff has consistently
surpassed that requirement, cleaning more than the required
10%. UCW cleaned approximately 10.7% (71 miles of 662.2 total
gravity miles) of the collection system last year. Staff
also conducts inspections of the collection system with the
utilization of underground closed-circuit television (CCTV)
inspection equipment. These cleaning and inspection efforts
allow staff to determine areas in the system that require repairs
or increased maintenance to provide the proper service to our
customers.
The FOG (Fats, Oils, and Grease) Program is aimed at reducing
grease related backups and overflows by educating the public
of the hazards associated with the disposal of grease and grease
related by-products into the wastewater system. Union County
Water has also developed a comprehensive list of food service
establishments (FSE) and commercial establishments. This effort
has resulted in creating a successful grease trap inspection and
enforcement program to ensure that restaurants and other
food preparation facilities properly maintain grease traps and
interceptors.
This fiscal year, 444 total FSE inspections were performed
among 390 FSE's, including 34 Union County public school
facilities.
Miles Gravity System Total (In Miles)
372,764
71 662
37,307 7.7 662
78,875 15 662
8 Wastewater Performance Summary Fiscal Year 2021-2022 I UNIONCOUNTY

Utility easements and right-of-ways are maintained by UCW
staff to ensure access for staff and equipment to conduct
routine maintenance as well as respond to emergencies, such
as sanitary sewer overflows. The easements require round-the-
clock access and should not be impeded by structures such
as pools (above or below ground), buildings, gardens, trees,
shrubs, plantings, fences, etc. UCW staff inspects and conducts
necessary maintenance, including mowing, to these easements
and right-of-ways once a year.
An Easement Awareness, Education and Enforcement Program
has been established to improve accessibility to UCW's sanitary
sewer easements. This is accomplished by educating customers
on the allowable uses of the easement and describing
prohibitions, as well as procedures regarding enforcement when
it is required for access.
High priority lines such as aerial creek crossings, lines subject
to erosion and/or problematic areas are visually inspected at a
minimum semi-annually. High priority lines are inspected more
frequently after periods of heavy rain and flooding.
Manhole Inspected
Pump Station Inspections
CCTV Connections
Point Repairs
UCW maintains emergency response equipment in a ready state
at all times. This emergency equipment varies in nature from
spare electrical parts and plumbing supplies, to vacuum trucks,
pumps, and excavators. Workers' safety is of utmost importance.
Safety equipment such as night lighting, gas monitors, trenching
and shoring equipment, and reflective cones/signs are always
readily available.
UCW continuously works to improve its infrastructure and
service provided to our customers. This involves consistent
inspections and system examinations to ensure that our system
is operating properly. Additionally, Union County has Capital
Improvement Projects (CIP) to identify and correct deficiencies
within the wastewater system. The following pages include an
overview of some of these projects:
Inspected
System Total
1102
17,788
3806
N/A
1494
N/A
329
N/A
UNIONCOUNTY I Wastewater Performance Summary Fiscal Year 2021-2022 9

12 Mile Creek WRF Expansion
Union County Water is currently in the design phase of
upgrading Twelve Mile Creek WRF. The project involves various
improvements, including increasing the treatment capacity from
7.5 MGD to 9.0 MGD.
These improvements will help meet future short-term
anticipated wastewater flows. The project will also prepare
the facility for a future expansion to 12 MGD. These expansion
projects will meet the projected long-term wastewater
treatment needs for the southwestern portion of the County.
THE EXPANSION PROJECT INCLUDES:
• Upgrade and expansion of the influent pump station
• New odor control facility for the influent pump station
• New chemical feed facility
New aeration blower
New final clarifier
Upgrade the solids handling odor control system
• Various electrical improvements
• Ancillary yard piping
Crooked Creek WRF Headworks
Improvements
Union County Water is currently in the construction phase of
two improvement projects at the Crooked Creek WRF. These
projects will improve the reliability and efficiency of the plant
operations.
THE IMPROVEMENT PROJECTS INCLUDE:
• Upgrade of the electrical and control systems
• Upgrade emergency backup power
• Upgrade the aeration system
• Ancillary yard piping
Grassy Branch WRF Expansion
Union County Water has entered into a Special Order of
Consent (SOC) with the North Carolina Division of Water
Resources (NCDWR) for high flow exceedances due to
limitations on the facility size. The SOC outlines the activities
needed to expand the facility from 0.05MGD to 0.12MGD
including relaxed parameters for regulatory compliance to
complete the expansion by June 30, 2027.
THE EXPANSION PROJECT INCLUDES:
• Upgrade of the influent pump station
• Add an additional treatment train
• Replace/upgrade existing sand filters with cloth disk filters
• Replace/upgrade the UV system
Ongoing Collection System II
Abatement Projects and Sanitary
Sewer Evaluation Studies
Studies are being done throughout the collection system to
identify problems, conduct flow monitoring, and assess the
need for rehabilitation.
Master Plan Study - Currently we have a comprehensive
masterplan that is being conducted. As part of that plan, we
have installed 27 flow meters throughout the entire system
to model flows. The data from those meters will direct SSES
efforts for FY22-23 and beyond.
Poplin Road Basin - Construction is underway of a 4 MGD
flow EQ tank located on Indian Trail -Fairview Road. This EQ
will allow staff to divert flows during peak hours and rain
events to avoid SSO's.
Crooked Creek WRF Basin - The Helmsville Pump Station
Basin underwent extensive SSES during FY21-22. The SSES
included 72 manholes and the inspection of 18,700 feet
of mainline, including lateral launch technology on all 30
connections to the system.
Grassy Brach WRF Basin - The Grassy Branch Basin
underwent extensive SSES during FY21-22. The SSES included
CCTV mainline inspections with lateral launch technology on
all 129 connections to the system.
Six Mile Basin - During FY21-22 an in-depth flow monitor
study was completed. The study comprised of 10 flow
meters that monitored flow during dry and wet weather near
Joe Kerr Road. One hundred twenty-eight manholes were
inspected and 26,100 feet of smoke testing was conducted in
the Highgate area as a result of previous flow metering efforts
conducted during FY20-21.
12 Mile Basin - A rehab project was conducted on a
significant portion of the West Fork 12 Mile Interceptor. This
project was identified based on FY20-21 CCTV results and
flow monitor findings of excessive amounts of rainwater
entering into this basin during FY19-20. This project reduced
significant IErI, measured in excess of one -million gallons
during two significant storm events.
10 Wastewater Performance Summary Fiscal Year 2021-2022 I UNIONCOUNTY

Sanitary Sewer Overflow Report
Start Date
MH or Main
Asset ID
Address
Water Body
Gal to Surface Gal on Total Secondary
Waters Ground Gallons Primary Cause Cause
2021-07-02 2063
7900 Stonehaven Drive
West Fork 12
Mile
500
0
500
Severe
Weather
181
Funderburk
2021-07-08 Road Pump 610 Funderburk Road
Station
0
650 650
Lift Station
Failure
2021-08-31 2426
1909 Hwy. 205(Eastside
#3)
0
180 180
Lift Station
Failure
2021-11-10
Helmsville
Force Main
2844 Gray Fox Road
South Fork
Crooked Creek
75
0
75 Pipe Failure
2021-11-16
Eastside
Station #2
Lift Station
4720 Monroe-Ansonville
Road
0
100 100
Lift Station
Failure
2021-12-15 10968 3913 Providence Road
0
225 225 Grease
2021-12-16 10215 and
8935
6324 Tanyard Road Price Mill Creek 80
1000 1080 Debris
2021-12-18 10992 3020 Arsdale Road
0
500 500 Grease
2022-01-03 20116 605 North Indian Trail 0 750 750 181
Road
2022-02-04
Forest Park
Force Main
Discharge
MH
390 Chestnut Parkway
West Fork 12
Mile
200 440 640 MH Failure
2022-04-05 9527 2104 Lytton Lane
South Fork
Crooked Creek
2000 250 2250 ARV Failure
2022-04-05 5231 4004 Sardis Church Road 2600 0 2600 181
Eastside
2022-04-21 Station #2
Lift Station
4720 Monroe-Ansonville
Road
0
120 120
Lift Station
Failure
2022-04-28 5282 3102 Sun Valley Place
South Fork
Crooked Creek
325
0 325
Contractor Hit
Line
2021-05-02 30520
3804 Creek View Drive
0
1160
1160
Debris
Total Spills: 15
Total Annual Volume: 11,155 Gallons
Miles of Pipe in System: 737
Reportable SSOs Per 100 Miles: 2.0
UNIONCOUNTY I Wastewater Performance Summary Fiscal Year 2021-2022 11

For questions concerning this Wastewater Performance
Summary or additional information please contact UCW:
704.296.4210
Or write to:
Union County Water
500 North Main Street, Suite 600
Monroe, NC 28112-4730
UNIONCOUNTY
Wastewater Performance Summary Fiscal Year 2021-2022 Union County Water