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World wastewater treatment plant observatory · data as reported by each inventory

Wastewater treatment plants in the United States

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14,626 inventory records · HydroWASTE v1.0 / United States

Data years: 2008, 2012. The inventory date does not establish current operation.

States

14,626 results

CompareNameNative sizeYear
NORTH AUGUSTA COLL SYSHW:3721214,757 population served2008
STREATOR STPHW:2761414,752 population served2012
JASPER WWTPHW:2823714,752 population served2012
Three Oaks WWTPHW:2679614,750 population served2012
CAMERON WWTPHW:3213614,733 population served2012
Cambridge WWTF and Coll SysHW:3058214,722 population served2012
WILLISTON LAGOONHW:3445114,716 population served2012
WEST BRUNSWICK REG WWTPHW:3415514,715 population served2012
ARTESIA STPHW:3341514,697 population served2012
Washington CH WWTP and SewersHW:3548314,660 population served2012
OIL CITY STPHW:3685514,634 population served2012
Fairfield Co Tussing Road WRFHW:3524714,608 population served2012
GLASGOWHW:2988114,600 population served2012
San Gabriel WWTPHW:3777514,600 population served2012
THIBODAUX WWTPHW:3019914,566 population served2012
SAXONBURG AREA STPHW:3676514,564 population served2012
CROWLEY STPHW:3012414,557 population served2012
YAZOO CITY POTWHW:3166214,550 population served2012
BURLINGTON WWTPHW:3913514,536 population served2012
Amesbury Dept of Public WorksHW:3074814,520 population served2012
PLAINVILLE WPCFHW:2658614,510 population served2012
ST MARYS MUN AUTH STPHW:3693814,502 population served2012
PALMETTO WWTPHW:2680414,500 population served2012
BJWSA_South Side WWTPHW:3714714,500 population served2008
Clay Township RWDHW:2840014,490 population served2012
MONROE JACK S CREEK WPCPHW:2725514,480 population served2012
TAHLEQUAH STPHW:3575614,458 population served2012
DOTHAN OMMUSSEE CREEK WWTPHW:2501614,441 population served2012
TOWN BRANCH WPCPHW:2713014,441 population served2012
ELIZABETHTOWN BORO STPHW:3630014,390 population served2012
GUM CREEK WPCPHW:2710414,381 population served2012
SAULT STE MARIE STPHW:3100914,324 population served2012
Elizabethton WWTPHW:3737314,307 population served2012
Cinnaminson Township SA CS_Septics_STPHW:3335614,286 population served2012
GRAHAM WWTPHW:3412214,277 population served2012
Salem Utility District STPHW:3955614,260 population served2012
ST CLAIR STPHW:2763214,253 population served2012
MILTON WWTPHW:2669314,250 population served2012
Clermont Co O Bannon Creek WWTPHW:3504514,249 population served2012
TODD CREEK WWTPHW:3172314,246 population served2012
ST HELENS STPHW:3608014,236 population served2012
PARK HILLS MINERAL BELT WWTPHW:3170914,235 population served2012
Clinton Joanna WWTPHW:3722714,230 population served2008
WASHOUGAL S_T FACILITYHW:3867614,210 population served2012
MOUNTAIN HOME SEWAGE LAGOONHW:2744514,206 population served2012
Tiffin WWTP and Sewer SystemHW:3544814,193 population served2012
BRIDGEPORT TWP STPHW:3098514,190 population served2012
PLATTEVILLE WWTPHW:3939014,182 population served2012
Woodmen Hills Metropolitain DistricHW:2644514,175 population served2012
DURANT UA WWTHW:3554814,170 population served2012
PENNRIDGE STPHW:3626414,165 population served2012
BEREAHW:2993214,159 population served2012
KEWANEE STP and COLLECTION SYSTEMHW:2768414,143 population served2012
Fairhaven DPW Wastewater DeptHW:3071114,135 population served2012
BLACKFOOT S_T FACILITYHW:2747814,122 population served2012
FORT MILL WWTPHW:3713514,120 population served2008
Dover WWTP and Sewer SystemHW:3507614,100 population served2012
WASHINGTON WWTPHW:3188014,082 population served2012
Berkeley Heights Township CS_Septics_STPHW:3326214,081 population served2012
CULPEPER S T PHW:3836514,071 population served2012
FORT VALLEY WPCPHW:2720614,070 population served2012
Alamo WWTPHW:3762514,070 population served2012
UNION PSD 40TH STREET WWTPHW:3889114,058 population served2012
Ogdensburg C WWTPHW:3388814,047 population served2012
Medford Township CS_Septics_STPHW:3337614,032 population served2012
PERU WWTPHW:2815514,024 population served2012
Dunkirk C WWTPHW:3407014,013 population served2012
SCOTTSBORO SOUTHSIDE WWTPHW:2521314,000 population served2012
OLIVEHURST WWTFHW:2599214,000 population served2012
LINCOLN WWTFHW:2609414,000 population served2012
Joliet Aux Sable Creek Basin WWTPHW:2759914,000 population served2012
Delaware Co Lower Scioto WRFHW:3478314,000 population served2012
Logan Co Indian Lake SSD WWTPHW:3487414,000 population served2012
Lorain Philip Q Maiorana WWTPHW:3522714,000 population served2012
Airport WWTP 3HW:3799114,000 population served2012
PARKINS MILLS WWTPHW:3851214,000 population served2012
BIDDEFORD WWTPHW:3039313,996 population served2012
FAIRHOPE WWTPHW:2502413,995 population served2012
COVENTRY WOODS WWTPHW:3719913,971 population served2008
ALMA WWTPHW:3111513,963 population served2012
GUNNISON WWTPHW:2627813,956 population served2012
East Liverpool WWTP and Sewer SystemHW:3508713,939 population served2012
NORTH HAVEN WPCFHW:2658113,920 population served2012
Geneseo V WWTPHW:3398113,914 population served2012
DYER STPHW:2802213,895 population served2012
GROVE CREEK PLANT and INTERHW:3723513,895 population served2008
LEXINGTON E LAGOONHW:3743413,889 population served2012
PRATTVILLE AUTAUGA CREEK WWTPHW:2508513,877 population served2012
PRATTVILLE PINE CREEK WWTPHW:2508613,877 population served2012
OLDSMAR WWTPHW:2671113,868 population served2012
MARSHALL WWTFHW:3124213,860 population served2012
SOUTH WINDSOR WPCFHW:2659913,850 population served2012
MUSTANG WWTHW:3564013,850 population served2012
Roxbury Township Skyview STP_CS_SepticsHW:3330113,848 population served2012
LIVINGSTON DOMESTIC STPHW:2613213,824 population served2012
West Carrollton WWTP and Sewer SystemHW:3549213,818 population served2012
FRANKLIN STPHW:2996913,805 population served2012
UPPER THOMPSON WWTPHW:2640313,800 population served2012
Sahuarita WWTRHW:2536113,770 population served2012
ELKTON WWTPHW:3055713,750 population served2012

Regulatory context

General reference. This is not an exhaustive review of applicable law.

United States: Clean Water Act / NPDES

NPDES regulates pollutant discharges from point sources to waters of the United States. The permit sets limits and monitoring conditions. A CWNS code identifies an inventory record, not an NPDES permit.

  • Permit identifier and permitting authority: EPA or an authorized state.
  • Outfall and receiving water; sewer connections follow a different control route.
  • Current permit conditions, limits and dated measurements; these are not included in CWNS.

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.