NC0023906_Annual Report_20200825

WILSON
NORTH CAROLINA
August 25, 2020
CERTIFIED MAIL RECEIVED
RETURN RECEIPT REQUESTED AU
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8 1010
System Performance Annual Report
NCDEQ/pVVR/NpDES
NCDEQ—DWR—Water Quality Permitting Section
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
Subject: 2020 Wastewater Collection and Treatment System Report
City of Wilson
NPDES Permit: NC0023906
Reclaimed Water Utilization Permit: WQ0018709
Wastewater Collection System Permit: WQCS00021
Dear Sir or Madam:
Enclosed are three copies of the City of Wilson's 2020 Wastewater Collection and Treatment System
Report. The reports will be mailed to customers during August 2020.
The report is based on fiscal year July 1,2019—June 30,2020. The report is submitted as required by the
N.C. Clean Water Act of 1999.
Please contact me at(252)399-2491 or via email at [e-mail] if you need additional
information.
immy ' idgen
Water R; lamati Manager
cc: Barry Parks,Director of Water Resources—City of Wilson
Todd Young, Water Infrastructure Manager—City of Wilson
Regional Supervisor,DWR Raleigh Regional Office-Surface Water Protection
CITY OF WILSON
INCORPORATED 1849
"ATER RECLAMATION DIVISION I PO BOY 10 I WILSCN.NORTH CAROLINA 27E94-0010 I (252(399-2491 ! [phone]
EQUAL OPPORTUNITY EMPLOYER j AFFIRMATIVE ACTION EMPLOYER

MISSION HOMINY CREEK WATER RECLAMATION FACILITY(WRF)
mi
STATEMENT The WRF is located in Wilson at 3100 Stantonsburg Road.It is a state-of-the-art regional treatment plant that processes wastewater for approxi-
mately 20,500 metered customers and a service population of approximately 52,500.The City of Wilson also treats wastewater from the Town of r_�i 0`t` •
"Protecting our Environment and Black Creek,the Town of Lucama and the Town of Sims. `,
Water Quality,through Teamwork The term water reclamation defines the treatment or processing of wastewater to make it reusable with specific treatment reliability.Reclaimed
and Excellent Service, water must also comply with very stringent water quality criteria.The term water reuse defines the use of treated wastewater for beneficial
uses,such as agricultural irrigation and industrial cooling.The City of Wilson is committed to reusing reclaimed water in areas that drinking •
now and for future generations." water is not needed such as irrigation water for Wedgewood Golf Course,the Burt Gillette Athletic Complex and industrial process/cooling water. • r
The reclaimed water system is part of the City's water conservation plan.
This report provides information concerning the City of Wilson's wastewater collection and treatment system performance for July 1,2019 to June 30,2020 as required in the North Carolina Clean Water Act of 1999(House Bill 1160).
If you have any questions about the information contained in this report,or would like to learn more about your wastewater collection system or the Hominy Creek Water Reclamation Facility,please call(252)399-2492.
TABLE DEFINITIONS&KEY SANITARY SEWER OVERFLOWS (SSOs)
<-less than
>-greater than Sanitary sewer overflows(SSOs)occur when untreated sew-
MGD(Million Gallons per Day)-a unit of measurement for flow volume age is discharged into the environment prior to reaching the . "
NTU(Nephelometric Turbidity Units)-a unit of measurement for Turbidity.The lower the value,the sewer treatment facilities.These typically occur at manholes, • r Vi,''� -�
clearer the water. pump stations, or broken sewer pipes. Infiltration/inflow ;,', �F
PPM(Parts per Million) a unit of measurement. (I/I)is unwanted water that enters the sewer collection sys p% ,.sl," r' . ,-
Parts per million compares to 1 minute in 2 years. tern through deteriorating older pipes,leaking manholes, j : : w
PPB(Parts per Billion)-a unit of measurement. illegal connections such as roof drains, etc. During heavy� w c"
1 Parts per billion compares to 1 minute in 2,000 years. rain events,pipes can become overloaded from I/I and cause
SU(Standard Units)-a unit of measurement for pH. SSOs.Pipe stoppages caused by fats,oils and grease can also lead to SSOs.Replacing and rehabilitating these lines and
Ammonia-one of several forms of nitrogen that exist in aquatic environments.Excessive ammonia can cause manholes reduces I/I into the sanitary sewer system,thus protecting the public health,improving treatment plant
toxic effects to aquatic life.Ammonia is measured in PPM. efficiency and reducing system maintenance.Generators provide emergency back-up power for pump stations and
BOD(Biochemical Oxygen Demand)-a required test that determines the amount of oxygen required by help prevent SSOs.
microorganisms to consume pollutants.BOD is measured in PPM. During fiscal year 2019-2020,the City of Wilson experienced four(4)reportable SSOs.The WRF treated 3.3 billion
Chronic Toxicity-a required test used to determine the potential effects of treated wastewater discharged gallons of wastewater during this period.
into the receiving stream.The test ensures that treated wastewater discharged into surface waters does not June 8,2020 June 17,2020
negatively impact aquatic ecosystems.
DO(Dissolved Oxygen)-a required test used to determine the amount of oxygen that is present in water. 4630 Ward Boulevard Intersection of Cardinal Drive&Lakeside Drive
It is a direct indicator of an aquatic resource's ability to support aquatic life.DO is measured in PPM. Total: 5,000 gallons Total:420 gallons
FC(Fecal Coliform)-a required test used to determine the presence of disease causing organisms.FC are Cause:Pipe Failure Cause: Infiltration/Inflow during heavy rain event
harmless but are used as indicators of other organisms(if FC are present others may be present).FC is June 17,2020 June 17,2020
measured as number of colonies per 100 milliliters of sample. 1206 Robin Hill Road Intersection of Beacon Street&Park Avenue
pH-a required test used to determine the hydrogen ion concentration in water.It is used to indicate basicity Total: 600 gallons Total:720 gallons
or acidity of a solution on a scale of 0 to 14,with pH 7 being neutral. Cause:Infiltration/Inflow during heavy rain event Cause: Infiltration/Inflow during heavy rain event
TN(Total Nitrogen)-a required test used to determine the sum of the different forms of nitrogen found in
water,including nitrate,nitrite and ammonia.Nitrogen is a critical nutrient required for all life but elevated
concentrations can result in excessive growth of algae and aquatic plants.TN is measured in PPM. Customers who observe a sanitary sewer overflow should report these as emergencies
TP(Total Phosphorus)-a required test used to determine all the different forms of phosphorus found in to the City of Wilson's Unified Communications Center at(252)399-2424.
water.Phosphorus is a critical nutrient required for all life but elevated concentrations can result in excessive Clientes que observan un desbordamiento del drenaje sanitrario, deben reporter
growth of algae and aquatic plants.TP is measured in PPM. estas situaciones de emergencia al Centro de comunicaciones unificadas de la Ciudad de
TRC(Total Residual Chlorine)-a required test used to determine the total amount of remaining chlorine Wilson,al telefono(252)399-2424.
present in water.Chlorine is added to destroy or deactivate disease-producing microorganisms.Excess
residual chlorine may cause adverse effects to aquatic life.TRC is measured in PPB.
TSS(Total Suspended Solids)-a required test that measures the amount of suspended solids in a sample.
TSS are measured in PPM. DISPOSABLE DOES NOT MEAN FLUSHABLE
Turbidity-a required test that measures clarity of water.It is used to indicate water quality and filtration
effectiveness.Turbidity is measured in NTU. Flushing paper towels and other garbage down the toilet wastes water and can create sewer backups and SSOs.
The related costs associated with these SSOs can be passed on to ratepayers.Even if the label reads"flushable,it is
NPDES PERMIT COMPLIANCE(NC0023906) still safer and more environmentally correct to place the item in a trashcan.
The WRF was compliant with all NPDES permit limits this year.
PLANT PERFORMANCE .EI,111.7.7,.
.1,.7. D O N OT
Pollutant Concentration Pollutant Concentration
FLUSH i
Ammonia Nitrogen PPM Flow MGD
Average <0.01 Average 9.09
Permit Limit 1.0/3.0(summer-monthly/weekly) Permit Limit 14.00(monthly)
2.0/6.0(winter-monthly/weekly) Partial list of items that should not be flushed
pH SU
Biochemical Oxygen Demand PPM Minimum Maximum 6.5 7.7 X Baby wipes,diapers X Candy and other food wrappers X Rubber items such as latex gloves
Average 1.5 Permit Limit Within 6.0 9.0(daily) X Cigarette butts X Clothing labels X Sanitary napkins
Permit Limit 5.0/7.5(summer-monthly/weekly) X Rags and towels X Cleaning sponges X Hair
10.0/15.0(winter monthly/weekly) Total Nitrogen Lbs/Yr X Cotton swabs,medicated X Toys X Underwear
Pounds Discharged 59,353 wipes(all brands) X Plastic items X Disposable toilet brushes
Chronic Toxicity Permit Limit 157,886
Test Performed Quarterly Passed all X Syrin
p ges X Aquarium gravel or kitty litter X Tissues(nose tissues,all brands)
Permit Limit Pass or Fail Total Phosphorus PPM
Average 0.48
Dissolved Oxygen PPM Permit Limit 2.00(quarterly) WHAT THE CUSTOMER CAN DO TO HELP
Average 8.8
Permit Limit >7.0(daily) Total Residual Chlorine PPB
Average <0.01 In order to help the City of Wilson continue a high standard of water quality and protection of the environment
Fecal Coliform Colonies/100 ml please follow these simple steps:
Permit Limit 18.0(daily)
Average 2 DO NOT pour grease,fats and oils from cooking down the drain-instead,collect the grease in a container
Permit Limit 200/400(monthly/weekly) Total Suspended Solids PPM and dispose of it in the garbage.
Average 0.05 DO NOT use the toilet as a wastebasket-place a wastebasket in each bathroom for the disposal of solid waste,
Permit Limit 30.0/45.0(monthly/weekly) disposable diapers,condoms,and personal hygiene products that DO NOT belong in the sewer system.
DO NOT use the sink to dispose of food scraps-instead,place food scraps in the garbage for disposal with solid
REUSE PERMIT COMPLIANCE(WQ0018709) wastes,or better yet,start a compost pile.
The WRF was compliant with all Reuse permit limits this year.
PLANT PERFORMANCE FOR MORE WATER QUALITY INFORMATION
Pollutant Concentration Pollutant Concentration City of Wilson-Water Resources Lower Neuse Basin Association Water's Worth It
Ammonia Nitrogen PPM pH SU [phone] www.Inba.net www.watersworthit.org
Average 0.05 Minimum Maximum 6.3 7.4 www.wilsonnc.org/water-resources River Guardian Foundation,Inc. Sound Rivers
Permit Limit 4.0/6.0(monthly/daily) Permit Limit 6.0-9.0(daily) N.C.Environmental Education www.riverguardfdn.org www.soundrivers.org
Biochemical Oxygen Demand PPM Total Suspended Solids PPM www•eenorthcarolina.org NCDEQ
Average 4.5 Average <0.01 [phone]
Permit Limit 10.0/15.0(monthly/daily) Permit Limit 5.0/10.0(monthly/daily) www.deq.nc.gov
Fecal Coliform Colonies/100 ml Turbidity NTU
Average 1 Average 0.42 AFFILIATIONS
Permit Limit 14/25(monthly/daily) Permit Limit 10.0(daily) The City of Wilson Water Reclamation Division is affiliated with the following organizations:
Flow MGD •Water Environment Federation •N.C.Water Environment Association •N.C.Rural Water Association
Average 0.23 •American Water Works Association •N.C.Water Works Association •Lower Neuse Basin Association
Permit Limit 4.1(monthly) •N.C.Water Quality Association •N.C.Pretreatment Consortium •Neuse River Compliance Association

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WHAT TO DO WHEN THE DRAINS STOP FLOWING?
Figure A Home
When wastewater (sewer) stops draining
in your home, it is a very serious problem
that can be considered a plumbing emer- Property Line
Clean-Out
gency.Since the water has no place to go,
it starts to come back up into the house-
hold plumbing. [ '
Public Right-of-Way House
When wastewater is not draining properly, Easement Clean-Out
determine if the drainage problem is only _ Street --
affecting one fixture, or multiple fixtures. J -
'fit is only one fixture,then the blockage is ` ii .. �` i l
probably related to the fixture itself,or the Sewer 4011...1 Public Flight-of-Way Portion Private Property Portion
interior plumbing near the fixture. If you Main of,Sewer Lateral of Sewer Lateral
cannot clear the blockage yourself then
*Not standard on all properties
you should seek a plumbing professional.
If multiple drains in the home are not flow-
ing properly, then you may have a block- Whom should _ ,' '' ,, What will the City do
age in the sewer drain that flows from the I call first? , `_ --� ~ '�L` when called?
home to the City's sewer main.When you v < , ice. Y -- `
have a clogged sewer drain, you should If you have multiple fixtures that are y` -- - • ,. `� _ �- If you think there is a blockage after the
not use any of the plumbing in the home not draining properly, try to locate your - " ' .1 '`,,t1 ", property line cleanout, contact the City
until the stoppage is cleared. property line cleanout(see Figure B).It is `� ...-, of Wil son's Unified Communications
typically located a few feet from the edge ='''! "`,;r Center at 399-2424. A service crew will
Who is responsible for of your property near the street.It should ,fi =.
', be dispatched to inspect the sewer lines
S
�;- and they will clear any blockages that
clearing the sewer line be flush with the ground,but maybe 0cov-
blockage? ered by landscaping. Some homes may z
. are within the City's area of responsibil-
•
not have a property line cleanout. If you • `V.0' '�r -
ity at no cost to you. If they determine
t'' ► �� .. .. d• the blockage is prior to the property line
Responsibility for the maintenance of can locate the cleanout, try to remove 4. ,r.,.: Property fine . you
P Y ! '�. cleanout, will be notified so you can
sewer piping from the home to the sewer the cover of the cleanout. If you feel any ;. r b _'t' contact a plumbing professional.
main connection is shared between the pressure, stop immediately and contact
property owner and the City of Wilson. the City of Wilson.If you remove the cover Collection System Maintenance
The property owner is responsible for the and you see standing water in the pipe,or
piping from home to the property line it is trying to flow up through the clean- and Projects Completed:
cleanout. The City of Wilson maintains out, contact the City of Wilson. If water •68 miles of pipe cleaned
the sewer line beginning at the proper- appears to be flowing freely at this point, (about 19%of the entire 363 mile system 10%required)
ty line cleanout. Please see Figure A to then the stoppage is prior to the property •2,400 feet of pipe replaced
understand your sewer pipe maintenance line cleanout and is the property owner's • 119 sewer services replaced
responsibilities. responsibility. • 33 grease blockages cleared from sewer mains