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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
BROWNSBURG WWTPHW:2799321,000 population served2012
Clarksville WWTPHW:2811521,000 population served2012
USA FT LEONARD WOOD WWTPHW:3235221,000 population served2012
KALISPELL WWT FACILITYHW:3251421,000 population served2012
Ware Shoals_Dairy StreetHW:3712921,000 population served2008
Dorado WWTPHW:3974620,987 population served2012
ASHLAND STPHW:3606720,980 population served2012
Middlefork STPHW:3745120,974 population served2012
COLUMBUS WWTPHW:3274720,971 population served2012
Salibury Dept of Public WorksHW:3078020,944 population served2012
GRANDVILLE WWTPHW:3089520,870 population served2012
Buffalo Creek WWTPHW:3787420,830 population served2012
Wadsworth WWTP and Sewer SystemHW:3547620,817 population served2012
CEDARTOWN WPCP 1HW:2716120,728 population served2012
Southeast Pasco Subregional WWTFHW:2683720,700 population served2012
Brownwood WWTPHW:3809420,680 population served2012
Twinsburg WWTP and Sewer SystemHW:3546420,600 population served2012
Gaffney_Peoples Creek Broad RiverHW:3719720,600 population served2008
BETHEL PARK STPHW:3675720,598 population served2012
DANVILLE STP and CSHW:2988020,577 population served2012
MarathonHW:2682420,554 population served2012
VINCENNES WWTPHW:2815920,537 population served2012
DCRUA Ross Road POTWHW:3156420,534 population served2012
DOVER TWP STPHW:3653320,505 population served2012
MATTOON STPHW:2756520,439 population served2012
Del Rio San Felipe WWTPHW:3760020,400 population served2012
GWINNETT CO BEAVER_SWEETWATERHW:2703120,365 population served2012
Chemung Co SD 1 STPHW:3397120,342 population served2012
JACKSONVILLE WWTPHW:2518320,283 population served2012
Glens Falls C WWTPHW:3381320,278 population served2012
Leesburg_Turnpike WWTFHW:2677920,250 population served2012
FERNANDINA BEACH STPHW:2682620,250 population served2012
EDWARDSVILLE STPHW:2765320,240 population served2012
Amsterdam C Sanand Comb Sewer STPHW:3375720,235 population served2012
WAHIAWA WWTPHW:2734920,207 population served2012
Third Creek WWTPHW:3805420,200 population served2012
Hanover Township SA CS_STPHW:3324620,193 population served2012
Mammoth Community WWTFHW:2616920,185 population served2012
Miamisburg WWTP and Sewer SystemHW:3527220,181 population served2012
Ellicottville V WWTPHW:3405820,175 population served2012
Northwest Arkansas WWTPHW:2545420,110 population served2012
SELMA VALLEY CREEK WWTPHW:2509720,101 population served2012
LAKE CITY STPHW:2676420,046 population served2012
GROVE CITY BORO STPHW:3691920,044 population served2012
LITITZ BORO STPHW:3632120,029 population served2012
Flagstaff Rio de Flag WWTFHW:2528320,000 population served2012
Pinetop Lakeside SD WWTFHW:2534720,000 population served2012
OJAI VALLEY SD WWTFHW:2593220,000 population served2012
Fort Collins Mulberry WW FacilityHW:2628120,000 population served2012
MSD CEDAR CREEK STPHW:2985620,000 population served2012
MSD JEFFERSONTOWN STPHW:2985720,000 population served2012
LA PLATA WWTPHW:3058120,000 population served2012
FernleyHW:3312620,000 population served2012
UPPER MERION MATSUNK STPHW:3625820,000 population served2012
BRISTOL TWP AUTH STP and CSHW:3628320,000 population served2012
NAVY YARD SEWER SYSTEMHW:3721420,000 population served2008
Bartlett STPHW:3731820,000 population served2012
Collierville Northwest STPHW:3735020,000 population served2012
Harker Heights WWTPHW:3773020,000 population served2012
Intercontinental Airport WWTPHW:3800320,000 population served2012
HOLLISTER WWTPHW:3180719,978 population served2012
ELKO WWTFHW:3314219,950 population served2012
TULLAHOMA WWTPHW:3753019,950 population served2012
Girard WWTP and Sewer SystemHW:3514519,932 population served2012
Sussex County MUA Upper Wallkill CS_STPHW:3339519,921 population served2012
BRANFORD WPCFHW:2653519,900 population served2012
Poughkeepsie T Arlington STPHW:3359719,900 population served2012
Bedford Heights WWTP and Sewer SystemHW:3498419,892 population served2012
BRAINERD BAXTER WTPHW:3121719,887 population served2012
BECKLEY WWTPHW:3898719,839 population served2012
NIXA WWTPHW:3227019,815 population served2012
ALLENDALE FAIRFAX STPHW:3710919,813 population served2008
FT WALTON BCH WWTPHW:2683219,800 population served2012
Morristown Town CS_STPHW:3327319,759 population served2012
Geauga Co McFarland Creek WWTPHW:3513319,740 population served2012
Bullhead City Section 10 WWTPHW:2534219,710 population served2012
Webster Sewer DepartmentHW:3071519,708 population served2012
Laguna Madre WWTPHW:3766219,700 population served2012
CRAWFORDSVILLE WWTPHW:2814319,684 population served2012
LOGANSPORT WWTPHW:2815019,684 population served2012
GARDNER KILL CREEK WWTPHW:2935719,673 population served2012
WILLIMANTIC WPCFHW:2661719,657 population served2012
LITTLE FALLS RUN STPHW:3847719,637 population served2012
Camas Wastewater Treatment PlantHW:3854719,620 population served2012
GENEVA STPHW:2774419,615 population served2012
LOS ALAMOS STPHW:3342019,600 population served2012
SOUTH SUBURBAN STPHW:3607419,600 population served2012
ALLEGHENY VALLEY STPHW:3674019,563 population served2012
SASM WWTFHW:2583619,561 population served2012
Musconetcong SA CS_STPHW:3338419,557 population served2012
Oneonta C Sewers and WWTPHW:3374219,542 population served2012
CLEVELAND WWTPHW:3142319,526 population served2012
HUNTSVILLE CHASE 3 WWTPHW:2504719,500 population served2012
Hollister Domestic WWTPHW:2592019,500 population served2012
WASCO WWTFHW:2602419,500 population served2012
ESSEX JCT VIL WPCFHW:3823919,495 population served2012
San German WWTPHW:3976019,493 population served2012
Marietta WWTP and Sewer SystemHW:3525719,452 population served2012
Jackson POTW Trahon and Big CreekHW:3167719,440 population served2012
GEORGETOWN STP 1HW:2997319,429 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.