City of Wilson -

Water Reclamation Facility P.O. Box 10 Wilson, NC 27894 Storm Sewer (Inflow) Storm Cross-Connection (Infiltration) (Infiltration) Cracked or Cracked Broken Broken 49 miles of pipe cleaned (about 14% of the entire 49 miles of pipe cleaned (about 14% of the entire – 10% required) 359-mile system of pipe replaced 5,500 feet services95 sewer replaced mains sewer from blockages cleared 26 grease Deteriorated • • • • How does the City of Wilson minimize I/I? minimize Wilson does the City of How inspects the collection daily system Technician A full time I/I a closed circuit city utilizes The leaks and other problems. for equip TV and recording uses a video camera (CCTV) that truck city The etc. in pipes, breaks leaky joints, document to ment leaks. eliminate to rehabs that also has a crew (CIP) Program Improvements City has an ongoing Capital The and replace maintain, to segments planned in 5 and 10-year collection to system of the wastewater segments expand demands. meet increasing and Projects Maintenance Collection completed: System (Infiltration)

(Inflow) Root Intrusion into Sewer Pipe Intrusion into Sewer Root Uncapped Cleanout (Infiltration) Connection Faulty Lateral Faulty (Inflow) Faulty Manhole Faulty Cover or Frame Main Broken (Infiltration) Sewer Pipe (Inflow) Roof Drain Roof Connection clean-outs they property that on your and verify yourself with your house plumbing system. house plumbing system. with your yourself Familiarize piped under- are that downspouts roof have If you discharge has no identifiable that a ground, the to discharge don’t that drains or foundation point, be may you on the lot, point or other low side ditch road the problem. to contributing Disconnect system. connections the sewer to unlawful reasonable find help you to Resources Water Contact Locate or loose clean-out to caps contribute Broken intact. are Contact plumbing a cap. replace or Tighten inflow. if needed. professional or pull yard, Do not open clean-out your drain plugs to or intersections. flooded drain to manhole covers Resources Water Contact naturally. drain these areas Let observe abnormal flooding. if you • • alternatives. • • What can do about I/I? What homeowners

- The Issues of Inflow and Infiltration

City of Wilson the environment. Inflow is the biggest problem because during major rain events rain events because during major is the biggest problem Inflow In growth. capacity pipe it quickly consumes future for needed backups can cause inflow events, rain extreme more the reduce and infiltration Inflow and businesses. homes into facilities to ability of sanitary and treatment systems sewer As wastewater. industrial and domestic transporttreat and can disrupted be processes treatment wastewater result, a to be discharged to wastewater poorly treated allow and may Increased inflow during heavy inflow Increased rains can cause problems I/I can also be costly to communities. Once clear water gets Once clear water communities. to I/I can also be costly results and that it must be treated in with wastewater, mixed all users. for rates can increase that in additional expenses ing significant storm events or following prolonged periods prolonged following or events storm ing significant of precipitation. Infiltration is when groundwater seeps into cracked or broken or broken cracked seeps into is when groundwater Infiltration to the contributor is a steady Infiltration pipes. wastewater due to saturated stays especially when the ground problem, exhibit seasonal often quantities Infiltration rainfall. steady can events Storm levels. groundwater to in response variation infiltration and increase levels trigger a rise in groundwater are observed follow flows The highest infiltration flows. Inflow is when clear water enters the wastewater system system wastewater the enters water is when clear Inflow that drains foundation or pumps, sump leaders, rain through during is greatest Inflow lines. sewer illegally connected to are events. major storm Inflow and infiltration (I/I) are terms describing ways that ways that terms describing are (I/I) and infiltration Inflow into way their make and groundwater runoff un- get treated, collection pipes and eventually wastewater plants. treatment wastewater at necessarily, Wastewater Collection and Treatment System Report Fiscal Year 2018-2019 City of Wilson -

Water Reclamation Facility P.O. Box 10 Wilson, NC 27894 Storm Sewer (Inflow) Storm Cross-Connection (Infiltration) (Infiltration) Cracked or Cracked Broken Pipe Broken 49 miles of pipe cleaned (about 14% of the entire entire 49 miles of pipe cleaned (about 14% of the – 10% required) 359-mile system of pipe replaced 5,500 feet services95 sewer replaced mains sewer from blockages cleared 26 grease Deteriorated Manhole • • • • How does the City of Wilson minimize I/I? minimize Wilson does the City of How inspects the collection daily system Technician A full time I/I a closed circuit city utilizes The leaks and other problems. for equip TV and recording uses a video camera (CCTV) that truck city The etc. in pipes, breaks leaky joints, document to ment leaks. eliminate manholes to rehabs that also has a crew (CIP) Program Improvements City Capital has an ongoing The and replace maintain, to segments planned in 5 and 10-year collection to system wastewater of the segments expand demands. meet increasing and Projects Maintenance Collection completed: System (Infiltration)

(Inflow) Root Intrusion into Sewer Pipe Root Uncapped Cleanout (Infiltration) Connection Faulty Lateral Faulty (Inflow) Faulty Manhole Faulty Cover or Frame Sanitary Sewer Main Broken (Infiltration) Sewer Pipe (Inflow) Roof Drain Roof Connection clean-outs they property that on your and verify yourself with your house plumbing system. house plumbing system. with your yourself Familiarize piped under- are that downspouts roof have If you discharge has no identifiable a sump pump that ground, the to discharge don’t that drains or foundation point, be may you lot, on the point or other low side ditch road the problem. to contributing Disconnect system. connections the sewer to unlawful reasonable find help you to Resources Water Contact Locate or loose clean-out to caps contribute Broken intact. are Contact plumbing a cap. replace or Tighten inflow. if needed. professional or pull yard, Do not open clean-out your drain plugs to or intersections. flooded streets drain to manhole covers Resources Water Contact naturally. drain these areas Let observe abnormal flooding. if you • • alternatives. • • What can do about I/I? What homeowners

- The Issues of Inflow and Infiltrationand Inflow of Issues The

City of Wilson the environment. Inflow is the biggest problem because during major rain events rain events because during major is the biggest problem Inflow In growth. capacity pipe it quickly consumes future for needed backups can cause sewage inflow events, rain extreme more the reduce and infiltration Inflow homes and businesses. into facilities to ability of sanitary and treatment systems sewer As wastewater. industrial and domestic transporttreat and can disrupted be processes treatment wastewater result, a to be discharged to wastewater poorly treated allow and may Increased inflow during heavy inflow Increased rains can problems cause I/I can also be costly to communities. Once clear water gets Once clear water communities. to I/I can also be costly results and that be treated it must in with wastewater, mixed all users. for rates can increase that in additional expenses ing significant storm events or following prolonged periods prolonged following or events storm ing significant of precipitation. Infiltration is when groundwater seeps into cracked or broken or broken cracked seeps into is when groundwater Infiltration to the contributor is a steady Infiltration pipes. wastewater due to saturated stays especially when the ground problem, exhibit seasonal often quantities Infiltration rainfall. steady can events Storm levels. groundwater to in response variation infiltration and increase levels trigger a rise in groundwater are observed follow flows The highest infiltration flows. Inflow is when clear water enters the wastewater system system wastewater the enters water is when clear Inflow that drains foundation or pumps, sump leaders, rain through during is greatest Inflow lines. sewer illegally connected to are events. major storm Inflow and infiltration (I/I) are terms describing ways that ways that terms describing are (I/I) and infiltration Inflow into way their make and groundwater runoff stormwater un- get treated, collection pipes and eventually wastewater plants. treatment wastewater at necessarily, Wastewater Collection and Treatment System Report Fiscal Year 2018-2019 Our Mission is to “Protect our Environment and Water Quality, through Teamwork and Excellent Service, now and for future generations.”

This report provides information concerning the City of Wilson’s wastewater collection and treatment system performance for July 1, 2018 to June 30, 2019 as required in the North Carolina Clean Water Act of 1999 (House Bill 1160).

Sanitary Sewer Overflows (SSOs) HOMINY CREEK WATER Once at the WRF, the treatment process begins. The Returning the Water to Nature or Reusing RECLAMATION FACILITY (WRF) treatment plant is designed to treat 14 MGD. The plant the Water Most of this clean water – now called effluent – is dis- currently averages treating 10 MGD. The following de- charged into Contentnea Creek but some of the effluent scribes the treatment process: is sent to the City’s system (beneficial Physical Methods - Primary Treatment reuse) to be used for or industrial process • Bar Screens – catch and remove large material water and cooling water. (wood, rocks, etc) as they flow past. • Grit Chamber – removes heavy particles that What’s Left Behind Infiltration/inflow (I/I) is unwanted water that enters settle rapidly like gravel, sand, seeds and coffee Now, what about the material that has been removed the sewer collection system through deteriorating old- grounds. As the water enters the chamber, from the water? These solids are called residuals; heavy er pipes, leaking manholes, illegal connections such as gravity causes the grit to settle to the bottom. matter that must be treated in order to safely return to roof drains, etc. During heavy rains pipes can become • Sedimentation (settling) Tanks – as water the environment. flows into the tanks, heavy organic particles The WRF is located in Wilson at 3100 Stantonsburg Road. overloaded from I/I and cause SSOs. Pipe stoppages It is a state-of-the-art regional treatment plant that pro- caused by fats, oils and grease can also lead to SSOs. settle to the bottom and are withdrawn and The following steps are used to further treat the cesses wastewater for approximately 20,000 metered Replacing and rehabilitating these lines and manholes pumped to the solids handling facilities for residuals: customers and a service population of approximately reduces I/I into the sanitary sewer system, thus pro- additional treatment. Floatable material is • Enclosed heated tanks called digesters use skimmed off and pumped to the solids 52,500. The City of Wilson also treats wastewater from tecting the , improving treatment plant microorganisms to turn the residuals into inert the Town of Black Creek, the Town of Lucama and the handling facilities. (inactive), harmless organic matter. efficiency and reducing system maintenance. Gen- Town of Sims. erators provide emergency back-up power for pump Primary treatment removes approximately 45% of • presses are used to remove water from The term water reclamation defines the treatment or stations and help prevent SSOs. the . the residuals to reduce the volume that must be processing of wastewater to make it reusable with spe- disposed of. cific treatment reliability. Reclaimed water must also During fiscal year 2018-2019, the City of Wilson expe- Biological Methods – • The treated residuals (organic material) comply with very stringent water quality criteria. The rienced four (4) reportable SSOs. The WRF treated 3.6 • Activated – wastewater is mixed with are used by area farmers as a fertilizer and soil term water reuse defines the use of treated wastewater billion gallons of wastewater during this period. millions of microorganisms. During constant amendment. for beneficial uses, such as agricultural irrigation and aeration (mixing air containing oxygen into the industrial cooling. The City of Wilson is committed to September 17, 2018 wastewater) the microorganisms absorb oxygen Biogas reusing reclaimed water in areas that drinking water is Cause - Inflow and infiltration during Hurricane and feed on the pollutants. not needed such as irrigation water for Wedgewood Golf Florence A by-product of the digestion process described above is • Final Settling Tanks – solids made up of the production of methane gas (biogas). The WRF uses Course, the Burt Gillette Athletic Complex and industrial microorganisms from the process/cooling water. The reclaimed water system is • Intersection of Kincaid Avenue & Canal Drive part of the biogas produced as fuel to heat the digesters, process settle to the bottom. Some of the part of the City’s water conservation plan. Total: 6,850 gallons thus significantly reducing the amount of time required microorganisms are sent back to the activated • Intersection of Mercer & Park Drive to digest the solids. The excess is burned off by a NPDES PERMIT COMPLIANCE sludge process to continue eating pollutants and Total: 4,250 gallons gas burner. The City has future plans to install a system The WRF was compliant with all NPDES permit some are removed and sent to the solids that will utilize the excess biogas to generate energy limits this year. • Intersection of Park Avenue & Beacon Street handling facilities for disposal. that can be used to operate other equipment or used for Total: 5,700 gallons Secondary treatment removes approximately 95% of green energy credits. Table Definitions & Key • Intersection of Vick Street & Vance Street the pollution; HOWEVER, in order for the WRF to com- PPM (Parts per Million) - a unit of measurement. Total: 4,500 gallons ply with permit limits additional treatment is needed. Parts per million compares to 1 minute in 2 years. “What The Customer Can Do Physical/Chemical/Biological Methods – BOD (Biochemical Oxygen Demand) – a required Customers who observe a sanitary sewer over- Advanced Treatment To Help” test that determines the amount of oxygen required flow should report these as emergencies to the Please follow these simple steps to help the City of • Nutrient Removal – nutrients (phosphorous by microorganisms to consume pollutants. BOD is City of Wilson’s Unified Communications Center at Wilson continue to provide a high standard of water qual- and nitrogen) can cause an overabundance of measured in PPM. (252) 399-2424. ity and protect our environment. algae growth in waterways. As the algae dies, TSS () – a required test that Clientes que observan un desbordamiento del dre- microorganisms feed on the decaying matter DO NOT use the as a measures the amount of suspended solids in a sample. naje sanitrario, deben reporter estas situaciones de using up oxygen needed by fish and other wastebasket – place a waste- TSS are measured in parts PPM. emergencia al centro de comunicaciones unificadas aquatic life. This depletion of oxygen can lead basket in each for the disposal of solid waste, dis- FC (Fecal Coliform) – a required test used to de la Ciudad de Wilson, al telefono (252) 399-2424. to fish kills. Phosphorous and nitrogen are posable diapers, condoms, and determine the presence of disease causing organisms. removed biologically and chemically at the personal products that FC are harmless but are used as indicators of other treatment plant. DO NOT belong in the sewer organisms (if FC are present others may be present). How Does Your Publicly Owned • – removes those particles that system. FC is measured as number of colonies per 100 milliliters Treatment System Work? primary and secondary treatment could not of sample. The treatment system uses the same physical, chemical remove. The wastewater passes through sand DO NOT pour grease, MGD (Million Gallons per Day) – a unit of measure- and biological processes used by nature to clean water. filters that remove remaining particles. Filtration fats and oils from cook- removes 99.9% of the pollution. Do not use the toilet ing down the drain – ment for flow volume. Everything we know about water, chemistry, bacteria, as a wastebasket • Disinfection – the final stage of treatment uses instead, collect the grease in a hygiene and engineering has gone into this system we sodium hypochlorite (liquid bleach containing container and dispose of it in PLANT PERFORMANCE use to purify our wastewater. The City maintains about chlorine) to disinfect the water. Disinfection kills the garbage. Pollutant Concentration 359 miles of sanitary sewers lines (piping system that off any disease-causing organisms that may collects and transports the wastewater) and 21 pump- remain after passing through the other DO NOT use the sink to dispose of food – Ammonia Nitrogen PPM instead, place food scraps in the garbage for disposal ing stations that help carry wastewater from homes, treatment steps. Chlorine can cause problems in Average 0.09 rivers and streams so we remove the chlorine with solid , or better yet, start a pile. schools, commercial buildings and industrial sources Permit Limit 1.0/3.0 (summer - monthly/weekly) before discharging the treated water to to the treatment plant. 2.0/6.0 (winter - monthly/weekly) Contentnea Creek.

Biochemical Oxygen Demand PPM Protecting The Neuse River Average 1.3 FOR MORE WATER QUALITY The Lower Neuse River Basin Association, Inc. (LNBA) Permit Limit 5.0/7.5 (summer - monthly/weekly) and the Neuse River Compliance Association, Inc, (NRCA) 10.0/15.0 (winter - monthly/weekly) INFORMATION are 501(c) (3) non-profit corporations comprised of mu- Total Phosphorus PPM nicipalities and industries located in the Neuse River Ba- City of Wilson – Average 0.21 sin. The mission of these organizations is to monitor and (252) 399-2492 Permit Limit 2.00 (quarterly) preserve the waters of the Neuse River and Neuse River www.wilsonnc.org/water-resources estuary through innovative and cost-effective waste- Total Suspended Solids PPM N.C. Environmental Education and reduction strategies. The NRCA Average 0.2 www.eenorthcarolina.org group is composed of 24 facilities Permit Limit 30.0/45.0 (monthly/weekly) located in the Neuse River Basin. NRCA was issued North Lower Neuse Basin Association Total Nitrogen Lbs/Yr Carolina’s first basin-wide NPDES permit for nitrogen www.lnba.net control January 1, 2003 and was reissued in 2008, 2014, and 2019. The group was given a Pounds Discharged 54,890 mandate to reduce their Total Nitrogen discharge by 30%. Through the combined efforts Permit Limit 157,886 River Guardian Foundation, Inc. www.riverguardfdn.org of its entire membership, the NRCA exceeded the mandated 30% nitrogen reduction by Fecal Coliform Colonies/100 milliliters (ml) of sample removing over 60% of their nitrogen loading to the Neuse River estuary since 1995. NCDEQ Average 3 (919) 733-2321 The City of Wilson is proud to be a charter member of both the LNBA and NRCA. Permit Limit 200/400 (monthly/weekly) www.deq.nc.gov Chronic Toxicity Water’s Worth It Affiliations Test Performed Quarterly Passed all www.watersworthit.org The City of Wilson Water Reclamation Division is affiliated with the following organizations: Permit Limit Pass or Fail • Water Environment Federation • N.C. Water Works Association Sound Rivers Flow Million Gallons per Day (MGD) • American Water Works Association • N.C. Pretreatment Consortium www.soundrivers.org • N.C. Water Quality Association • N.C. Rural Water Association Average 9.95 • N.C. Water Environment Association Permit Limit 14.00 (monthly)