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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
Hamilton Township Mercer WPCF CS_Septics_STPHW:33375105,987 population served2012
MSD DEREK R GUTHRIE WWTPHW:29854105,800 population served2012
FARGO WWTPHW:34452105,549 population served2012
SO SF SAN BRUNO WWTFHW:25856105,307 population served2012
NORTH SHORE SD GURNEE STPHW:27728105,208 population served2012
Yakima Regional POTWHW:38682105,141 population served2012
ROCKFISH CREEK WWTPHW:34203103,903 population served2012
Decatur Sanitary DistrictHW:27696103,859 population served2012
River Road WWTPHW:37580103,817 population served2012
KENT COUNTY STPHW:26630103,810 population served2012
Texarkana South Regional WWTPHW:37891103,439 population served2012
MANCHESTER CREEK WWTPHW:37180103,333 population served2008
Temecula Valley Regional WRFHW:26236103,092 population served2012
Daly City WWTPHW:25851102,825 population served2012
Franklin WWTF WRBPHW:33225102,784 population served2012
Visalia WWTPHW:26023102,684 population served2012
FLINT WPCFHW:30911102,434 population served2012
JAMES RIVER W P C FHW:38484101,900 population served2012
RICHMOND WWTFHW:25842101,373 population served2012
Binghamton Johnson City JtS BdSTPHW:33901101,357 population served2012
Duck Creek WWTPHW:37828100,700 population served2012
South Monmouth Regional STPHW:33321100,677 population served2012
MOONEYHW:38421100,400 population served2012
Nashua WWTFHW:33191100,247 population served2012
SANTA MARIA WWTFHW:25907100,062 population served2012
Plantation STPHW:26640100,000 population served2012
DURANGO HILLS WRCHW:33144100,000 population served2012
Albany Co ACSD South STPHW:33748100,000 population served2012
Dry Creek WWTPHW:2609199,965 population served2012
JO CO NELSON COMPLEX WWTPHW:2953699,950 population served2012
Corona WWTF 1HW:2622399,000 population served2012
SIOUX CITY WWTPHW:2904398,485 population served2012
GREELEY WWTPHW:2628598,462 population served2012
OREMHW:3813798,398 population served2012
Saratoga Co SD1 WPCPHW:3382498,200 population served2012
Rialto WWTPHW:2623497,873 population served2012
ROCHESTER WWTPHW:3122597,675 population served2012
MESA SOUTHEAST WRPHW:2532097,440 population served2012
BATTLE CREEK STPHW:3100897,227 population served2012
St Petersburg Northwest WWTPHW:2670996,735 population served2012
Westside Treatment FacilityHW:3867296,426 population served2012
Somerset Raritan Valley RSA CS_STPHW:3328996,089 population served2012
Turkey Creek STPHW:3754696,000 population served2012
MATTABASSETT WPCFHW:2654295,547 population served2012
Monroe Co NW Quadrant WWTPHW:3404695,509 population served2012
Easterly WWTPHW:2607795,483 population served2012
HANOVER PARK WRPHW:2778895,424 population served2012
GILROY WWTFHW:2591895,068 population served2012
BOCA RATON STPHW:2671594,857 population served2012
Zacate Creek WWTPHW:3763994,500 population served2012
FOREST GROVE STPHW:3603994,264 population served2012
Manchester WWTFHW:3318894,024 population served2012
Westchester Co Mamaroneck SD STPHW:3369293,865 population served2012
Sewer District 500 LiverpoolHW:3526793,398 population served2012
LAWTON WWTHW:3569993,357 population served2012
Euclid WWTP and Sewer SystemHW:3510093,059 population served2012
FAIRFOREST WWTPHW:3721893,014 population served2008
Fall River Public Works DepartmentHW:3074592,659 population served2012
Bob Derrington WWTPHW:3759692,383 population served2012
CARMEL WWTPHW:2798192,351 population served2012
Massillon WWTP and Sewer SystemHW:3526192,325 population served2012
URBANA CHAMPAIGN SD NORTHEAST STPHW:2758692,080 population served2012
BILLINGS WWTPHW:3251991,750 population served2012
SCRANTON SEWER AUTHORITYHW:3641491,638 population served2012
Thorn Creek Basin SD STPHW:2773191,505 population served2012
SOD RUN WWTPHW:3054191,487 population served2012
BIG CR WPCPHW:2701791,092 population served2012
Lewisville WWTPHW:3783491,000 population served2012
Wichita Falls River Road WWTPHW:3788091,000 population served2012
Gary L Kron WRF and Sewer SystemHW:3520190,775 population served2012
Stony Brook RSA River Rd STP_ Princeton CS TPHW:3329090,770 population served2012
JOLIET EASTSIDE STPHW:2759890,628 population served2012
BELLINGHAM POST POINT TPHW:3854090,453 population served2012
Westchester Co New Rochelle STPHW:3369390,434 population served2012
Stewart Creek West WWTPHW:3787890,400 population served2012
Mattawoman WWTPHW:3057490,111 population served2012
Chandler Ocotillo WRFHW:2531590,000 population served2012
SAN PABLO WWTFHW:2586190,000 population served2012
ARLINGTON E DIST STP 4HW:2666390,000 population served2012
SALMON CREEK STPHW:3855689,997 population served2012
OKC DEER CREEK WWTHW:3565889,842 population served2012
Yuma Figueroa WPCFHW:2539489,597 population served2012
Tapia WRFHW:2596689,495 population served2012
Parsippany Troy Hills Township Septics_CS_STPHW:3327789,443 population served2012
Southwest District WWTFHW:2666589,333 population served2012
SANTA BARBARA WWTFHW:2590589,082 population served2012
Chico WPCPHW:2597788,900 population served2012
St Petersburg Southwest WWTPHW:2670788,750 population served2012
KELLOGG CREEK STPHW:3602688,705 population served2012
MOORES CREEK STPHW:3841488,228 population served2012
RIO RANCHOHW:3341487,521 population served2012
St Petersburg Northeast WWTPHW:2670887,500 population served2012
BATON ROUGE CENTRAL WWTPHW:3035287,084 population served2012
LONGMONT WWTPHW:2629787,000 population served2012
GREENVILLE UTILITIES COMM WWTPHW:3434786,932 population served2012
W Carl Dicks WWTPHW:2685886,900 population served2012
Two Rivers Water Reclamation Authority WRA CS_STPHW:3328886,861 population served2012
Macon POPLAR STREET WPCPHW:2701086,782 population served2012
MSD GRAND GLAIZE WWTFHW:3174686,686 population served2012
LOWER MUDDY CREEK WWTPHW:3422986,415 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.