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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 Hudson SA River Rd WWTP CS_CSO_STPHW:3328346,425 population served2012
Heart of the Valley MSDHW:3924946,388 population served2012
Newark WWTP and Sewer SystemHW:3529346,279 population served2012
Neptune Township TNSA CS_STPHW:3332346,259 population served2012
HUNTSVILLE SPRING BRANCH WWTPHW:2504646,000 population served2012
MADISON WWTPHW:2506146,000 population served2012
ATHENS NORTH OCONEE WPCPHW:2709946,000 population served2012
UPPER GWYNNED TOWAMENCIN STPHW:3627746,000 population served2012
Pharr WWTPHW:3763446,000 population served2012
TOTOPOTOMOY WWTPHW:3847846,000 population served2012
CALDWELL SEWAGE TRT FACILHW:2737145,898 population served2012
BAY CITY STPHW:3099545,800 population served2012
Sonoma Valley WWTFHW:2586845,768 population served2012
CRESENT BEACH WWTPHW:3711645,689 population served2008
MERIDIAN POTWHW:3154345,662 population served2012
CHALFONT NEW BRITAIN TWP JSAHW:3621245,619 population served2012
ST CHARLES STPHW:2775445,614 population served2012
HOLLISTER INDUST WWTFHW:2592145,533 population served2012
Dallas Salmon Central WWTPHW:3799445,461 population served2012
Montgomery Co Eastern Regional WWTP and SewersHW:3528445,375 population served2012
DALE MABRY AWWTPHW:2670045,361 population served2012
Marley Taylor WRFHW:3061245,207 population served2012
Richmond WWTPHW:2815745,200 population served2012
Lancaster_Catawba RiverHW:3721545,120 population served2008
North Olmsted WWTP and Sewer SystemHW:3531945,101 population served2012
WARMINSTER STPHW:3624445,060 population served2012
DOWNINGTOWN AREA STPHW:3626045,047 population served2012
HANFORD WWTFHW:2597345,000 population served2012
BRADENTON WWTPHW:2680245,000 population served2012
Northwest AWTPHW:2700945,000 population served2012
FRANKFORT STP and CSHW:2988745,000 population served2012
Fairfield WWTP and Sewer SystemHW:3510245,000 population served2012
Sugar Land South WWTPHW:3798845,000 population served2012
Central District WWTP BaytownHW:3799745,000 population served2012
San Marcos WWTPHW:3805845,000 population served2012
Suffolk Co SCSD21 SUNY STPHW:3355544,937 population served2012
RCSD KIMMSWICK WWTPHW:3204544,900 population served2012
North Bergen MUA Central STP_CS_CSOHW:3327544,881 population served2012
DUCKETT CREEK STP 1HW:3196044,851 population served2012
Fayetteville Westside WWTPHW:2541944,839 population served2012
WILLIAMSPORT CENTRAL STPHW:3660544,835 population served2012
BRISTOL STPHW:2653844,700 population served2012
CENT KITSAP REG STPHW:3858844,476 population served2012
HILTON HEAD PSD 1 STPHW:3725444,465 population served2008
Ottawa Co Portage_Catawba WWTPHW:3480644,374 population served2012
ROCK ISLAND MAIN STPHW:2767344,356 population served2012
KIHEI WWTFHW:2735844,325 population served2012
Struthers WWTP and Sewer SystemHW:3543244,256 population served2012
Goodyear 157th Ave WWRFHW:2533444,240 population served2012
BUTLER AREA STPHW:3682144,165 population served2012
DOTHAN LITTLE CHOCTAWHATCHEE WWTPHW:2501744,127 population served2012
ELMHURST WWTP and COLLECTION SYSTEMHW:2761044,121 population served2012
Sierra Vista WWTFHW:2527944,043 population served2012
Endicott V STPHW:3390544,038 population served2012
EAST HARTFORD WPCFHW:2656144,000 population served2012
CASEYVILLE TWNSHP EASTHW:2763844,000 population served2012
NEW ALBANY WWTPHW:2812244,000 population served2012
Burton Creek WWTPHW:3775144,000 population served2012
Bonita Springs WWTFHW:2678643,944 population served2012
MORGANTOWN STAR CITY WWTPHW:3894343,911 population served2012
Asbury Park City CS_STPHW:3332243,874 population served2012
Haverhill Sewer Collection SystemHW:3071943,792 population served2012
MOLINE SOUTH WWTPHW:2767143,768 population served2012
BETHUNE POINT WWTPHW:2689543,700 population served2012
Oconee Co_Coneross Creek WWTFHW:3724643,697 population served2008
MIDWAY SEWER DISTRICT WWTPHW:3856843,616 population served2012
Post Oak Creek WWTPHW:3783943,600 population served2012
Annapolis City WWTPHW:3053143,538 population served2012
MOORHEAD WTPHW:3122143,472 population served2012
CLEVELAND UTILITIES STPHW:3734643,441 population served2012
GRAND CHUTE MENASHA WWTPHW:3954943,427 population served2012
HILLSBORO WESTSIDE STPHW:3603743,370 population served2012
TURKEY CREEK WWTPHW:3171943,369 population served2012
Attleboro Water and Wastewater DivHW:3073443,368 population served2012
MISSOULA WWTPHW:3251043,290 population served2012
PINOLE WWTFHW:2587943,287 population served2012
BRUSH CREEK STPHW:3673643,261 population served2012
Newburgh C Sewers and WWTPHW:3362043,219 population served2012
Southwest WWTP ConroeHW:3801643,200 population served2012
LAFAYETTE SOUTH SEWAGE PLANTHW:3015343,153 population served2012
Vega Baja WWTPHW:3976643,021 population served2012
San Luis Obispo WRFHW:2588643,000 population served2012
LOWER DORCHESTER WWTPHW:3714243,000 population served2008
BRIDGEPORT EAST SIDEHW:2653742,993 population served2012
Coachella WWTPHW:2620142,951 population served2012
GENEROSTEE WWTPHW:3716942,949 population served2008
GRAND ISLAND WWTPHW:3282842,940 population served2012
Onondaga Co Oak Orchard WWTPHW:3393342,911 population served2012
Chemung Co Elmira SD STPHW:3397042,900 population served2012
ELK RIVER WWTFHW:2578742,760 population served2012
KEY WEST WWTPHW:2681742,750 population served2012
Yuba City WRPHW:2602642,706 population served2012
EAST MOLINE REGIONAL STPHW:2766842,683 population served2012
SPANISH FORKHW:3817642,670 population served2012
South Central WPCPHW:2732942,539 population served2012
HOPEWELL REGIONAL WWTPHW:3844542,531 population served2012
ACME STPHW:2699842,530 population served2012
Findlay WWTP and Sewer SystemHW:3510542,498 population served2012
Greene Co Sugarcreek WWTP and SewersHW:3515342,458 population served2012
Denton Creek WWTPHW:3756842,400 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.