WQCS00162_Annual Performance_20220225

Fes. Carolina Water Service
INN of North Carolina'M
February 24, 2022
NC DEQ—Water Quality Permitting Section
Attention: Central Files
512 N. Salisbury St. RECEIVED
Raleigh, North Carolina 27604
FEB 2 6'2022
2021 Annual Sewer Performance Reports {' NCDEQ/DWRJNPDES
Enclosed are the 2021 Annual Sewer Performance Reports for the Carolina Water Service Inc. of North
Carolina wastewater systems that are required to comply with North Carolina General Statute 143-215.1C.
System NPDES Permit Collection System Permit
Bradfield Farms NC0064734 WQCS00253
Carolina Trace NC0038831 WQCS00217
Connestee Falls NC0024295 WQCS00219
Fairfield Harbour NC0033111 WQCS00162
Sugar Mountain NC0022900 WQCS00174
If you have any questions or require additional information, please do not hesitate to contact me at (704) 318-
3317 or [e-mail].
Sincerely,
Brent Milliron
Regulatory Compliance Manager
Cc: Tony Konsul—Director of State Operations (West)
Dana Hill —Director of State Operations (East)

•
FLA
Carolina Water Service
1101 of North Carolina"
Wastewater Treatment and Collection
Performance Annual Report
RECEIVED
R 2 5 2022
Fairfield Harbour NCDEQIDWRINPDES
NPDES: NC0033111
Collection System: WQCS00162
January 1, 2021 - December 31, 2021
P.O. Box 240908 Phone: [phone]
Charlotte, NC 28224 https://www.myutility.us/carolinawaterservicenc

I. General Information
Service Area:
Fairfield Harbour
Applicable Permits:
Type NPDES Permit Number Area Manager Phone
Wastewater Treatment Facility NC0033111 Anthony Futrell 800-525-7990
Collection System WQCS00162 Anthony Futrell 800-525-7990
Description of Treatment and Collection Systems:
Operation of a 0.600 Million Gallons per Day(MGD) domestic wastewater treatment facility consisting of
parallel extended aeration type treatment plants with the following components: static bar screen, flow
equalization tank, splitter box, extended air, clarifiers, ultraviolet disinfection with liquid chlorination back-up,
chlorine contact chamber, effluent holding tank with pumps, aerated digesters, cloth filters, chemical-feed
phosphorus removal, dissolved oxygen sensors and controllers for each aeration basin for total nitrogen
reduction, blowers, effluent flow meter, and auxiliary power.
Operation and maintenance of a wastewater collection system consisting of approximately 22.5 miles of
gravity sewer, 5.86 miles of force main, 26 duplex lift stations, and 1877 service connections.
Treatment Process Flow Chart
(Raw Wastewater
dBar Screen
Filters
l ______ UV Disinfection
Equalsin j, Aeration Clarifier
Basin ` — -=_= _
Basin •
Treatecl
Return Activated Sludge Effluent
Discharge
Sludge Disposal
Digester
1. Bar Screen—Removes larger debris,such as rocks and sticks,that could potentially damage equipment.
2. Equalization Basin—Allows for a steady and consistent flow of wastewater into the aeration basin to maximize treatment.
3. Aeration Basin—Air is circulated,and microorganisms remove dissolved solids,pollutants, Phosphorus and Nitrogen.
4. Clarifier—Solids are separated from the liquid and piped back to the aeration basins via the return activated sludge piping.
S. Filters—Liquid is filtered to remove any remaining fine particles.
6. Disinfection—Effluent is disinfected by Ultraviolet light to inactivate pathogenic organisms.
7. Solids Handling—Treats the solids removed from the wastewater to allow safe and economical disposal.

Summary of Collection System Performance:
During 2021, we collected and treated 114,220,000 gallons of wastewater.The system experienced one (1)
sanitary sewer overflow (SSO) during the 2021 calendar year. This was caused by the treatment filters
malfunctioning and operations staff were able to stop the overflow within two hours.
One of our main goals is to ensure we protect the public and environment by safely transporting and treating
wastewater before discharge.
Key Performance:
• 19,091 linear feet of sewer pipe was cleaned in 2021.
• 80 feet of sewer line were removed and replaced with a larger line to increase capacity in 2021.
• There are 26 duplex Lift Stations serving the Fairfield Harbour Subdivision. Each lift station is checked
once a week with maintenance conducted as needed, emergency generator testing, wet well cleanings,
and emergency/routine repairs.
• 4 Lift stations were rehabbed and upgraded in 2021. The dry wells were converted to wet wells to
provide additional safety to our employees.
• All 26 duplex stations are continuously monitored using installed telemetry system that will notify our
staff of any issues 24/7.
• Annually, each Lift Station is inspected using our 56 Point safety checklist.
• As part of our Asset Management Program, an Annual Maintenance checklist is conducted to
determine that equipment is performing at peak efficiencies.
• Our staff throughout the year manually conducts manhole inspections and documents deterioration (if
any) due to corrosive atmospheric conditions.
• We have instituted an infiltration and inflow (I&I) program. The purpose of the l&I program is to keep
n storm water from enteringthe collection system. Infiltration and inflow is a clear indicator
unwanted Y
that there could be broken pipes, uncovered sewer laterals, or someone illegally connected to the
collection system.
• As a proactive measure, we educate our customers of our concerns of Fats, Oil, and Grease. Your help
in what is put down the drain greatly prevents clogs due to grease buildups and improves our overall
collection system. These grease buildups can result in SSO's.
• Our staff is continually monitoring and clearing rights of way (ROW's). These rights of way normally are
in low lying creeks and wooded areas. Rights of way need to be cleared to ensure easy access during
emergency situations.
Summary of Wastewater Facility Performance:
It is our goal and standard at Carolina Water Service of North Carolina to meet 100% of our NPDES permit
discharge limits. We evaluate our treatment processes daily to ensure that goal is obtained. Our permit
requires us to continually monitor the effluent to determine if the treatment process is working effectively.
This monitoring consists of sampling at various points in the treatment process. These samples include: Flow
measurement of how much wastewater enters and then is discharged from our plant, Biochemical Oxygen
Demand (BOD), Total Chlorine Residual, Enterococci, Total Ammonia, Total Nitrogen, pH, Total Phosphorus,
Total Suspended Solids, Dissolved Oxygen, Temperature, TKN, and Nitrates/Nitrites.

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Over 1600 compliance samples were analyzed throughout the 2021 calendar year and only one (1)violation
occurred.
Our staff is committed to a standard of excellence by ensuring a safe and clean facility while maintaining
regulatory compliance. No known adverse effects have been noted on the environment or receiving stream.
II. Violation Summary-2021
January No violations/deficiencies.
February No violations/deficiencies.
March No violations/deficiencies.
April No violations/deficiencies.
May No violations/deficiencies.
June No violations/deficiencies.
July No violations/deficiencies.
• Sanitary sewer overflow occurred on 8/7/2021
August • Enterococci daily limit was exceeded on 8/30/2021
September No violations/deficiencies.
October No violations/deficiencies.
November No violations/deficiencies.
December No violations/deficiencies.
III. Notification
Customers will be notified of the availability of this report with a message on their bills and copies will be
provided upon request.
IV. Certification
I hereby certify that the information contained in this report is accurate and complete to the best of my
knowledge.
D t,u'r°MDana rw
Signature: Dana H I I I � "-
�� Date: 2/22/22
Name: Dana Hill Title: Director of Operations