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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
Placer County WWTF 1HW:2608618,000 population served2012
Lamont WWTFHW:2612718,000 population served2012
Widefield WSDHW:2646118,000 population served2012
VENICE EAST SIDE WWTPHW:2688018,000 population served2012
CAMELOT STPHW:2695818,000 population served2012
SHELBYVILLE WWTPHW:2801918,000 population served2012
LEESVILLE STPHW:3033218,000 population served2012
LITTLE RIVER S T PHW:3719118,000 population served2008
Kingsville North WWTPHW:3766818,000 population served2012
Cedar Park WWTPHW:3781618,000 population served2012
LINCOLN CITY STPHW:3614117,984 population served2012
CLINTON STP 1HW:3734817,974 population served2012
ALBERT LEA WWTPHW:3121417,948 population served2012
Lawrenceburg WWTPHW:2811317,941 population served2012
ARLINGTON TREATMENTHW:3868617,930 population served2012
Milford Dept of Public WorksHW:3074417,914 population served2012
HANNIBAL WWTPHW:3171417,907 population served2012
City of DublinHW:2710717,873 population served2012
DELHI TWP WWTPHW:3083317,868 population served2012
Upper Martinez WWTPHW:3807017,850 population served2012
HAYS WWTPHW:2964017,832 population served2012
WINDBER AREA INGLESIDE STPHW:3661017,805 population served2012
CHRISTIANSBURG WWTPHW:3840817,800 population served2012
Mount Vernon WWTP and Sewer SystemHW:3528917,798 population served2012
DICKINSON TREATMENT WORKSHW:3445017,787 population served2012
SHAMOKIN COAL TWP STPHW:3663917,757 population served2012
Arcata WWTFHW:2581117,752 population served2012
OCALA WRF 1HW:2680817,750 population served2012
Camrosa Water Reclamation FacilityHW:2596317,740 population served2012
CHIPPEWA FALLS WWTPHW:3915417,738 population served2012
CROWN POINT WWTPHW:2802117,728 population served2012
EXCELSIOR SPRINGS WWTPHW:3186517,725 population served2012
Merrimack WWTFHW:3318917,725 population served2012
MENDENHALL VALLEY TREATMENT PLANTHW:2525717,700 population served2012
Kingman Hilltop WWTFHW:2534417,700 population served2012
GRETNA STPHW:3013817,700 population served2012
SO CLINTON WWTPHW:3081617,695 population served2012
Lake Co Madison No 1 WWTPHW:3520217,680 population served2012
LAS VEGAS WWTPHW:3341917,677 population served2012
ALBEMARLE WWTPHW:3439017,658 population served2012
POPLAR BLUFF S LAGOONHW:3173117,657 population served2012
ANACORTES STPHW:3853817,644 population served2012
KEALAKEHE WWTPHW:2734217,616 population served2012
WARREN BORO STPHW:3686617,601 population served2012
North HempsteadTGreat Neck WPCPHW:3352717,600 population served2012
Maple Shade Township STP_CS_SepticsHW:3335217,585 population served2012
Allendale Charter TownshipHW:3087317,579 population served2012
Water Farm I STPHW:2663417,531 population served2012
GRAND HAVEN STPHW:3090317,531 population served2012
Batavia C WWTPHW:3397217,531 population served2012
WOLF WWTPHW:3962517,523 population served2012
Painesville WWTP and Sewer SystemHW:3533317,503 population served2012
Florence Merrill WRFHW:2537417,500 population served2012
Auburndale Regional WWTPHW:2685117,500 population served2012
STOOKEY TWP PLT 3HW:2763717,500 population served2012
Guilderland T Nott Road WWTPHW:3370717,500 population served2012
LAKE OZARK REGIONAL WWTPHW:3234217,474 population served2012
GENESEE COUNTY DIST 3 WWTPHW:3119017,470 population served2012
Lumberton WWTP 2HW:3796617,470 population served2012
STROUDSBURG BORO STPHW:3642317,450 population served2012
SHERIDAN WWTPHW:3964817,444 population served2012
CARTHAGE WWTPHW:3171117,378 population served2012
MOULTRIE WPCPHW:2711217,356 population served2012
HARTSVILLE CITY OFHW:3715817,347 population served2008
MONROE STPHW:3861017,330 population served2012
STEUBEN LAKES RSDHW:2816717,313 population served2012
Seneca Point NERAWWTPHW:3055017,301 population served2012
City of Saco Water Resource Recovery DivisionHW:3040017,300 population served2012
HENDERSONVILLE WWTPHW:3426617,298 population served2012
Ridaught Landing WWTPHW:2675417,292 population served2012
SOUTH CHARLESTON WWTPHW:3888717,290 population served2012
New Philadelphia WWTP and SewersHW:3531117,288 population served2012
Morro Bay Cayucos WWTFHW:2589217,284 population served2012
PRICHARD CARLO A MORRIS WWTPHW:2508717,265 population served2012
TAMAQUA BORO STPHW:3640317,262 population served2012
CLARION AREA AUTH STPHW:3691617,256 population served2012
LOVES CREEK STPHW:3742517,183 population served2012
SAND SPRINGS MAIN WWTHW:3567617,172 population served2012
Maumelle WWTPHW:2571817,163 population served2012
BURLINGTON EAST STPHW:3823517,150 population served2012
CENTRALIA STPHW:3855017,140 population served2012
SOUTH BELOIT STPHW:2767917,100 population served2012
RIVER FALLS WWTPHW:3942617,099 population served2012
HERMITAGE MA BOBBY RUN STPHW:3690917,088 population served2012
KETCHUM STPHW:2746017,083 population served2012
LEWISTOWN BORO STPHW:3648717,083 population served2012
DERBY WWTPHW:2924317,081 population served2012
LEWISBURG AREA STPHW:3660817,064 population served2012
LA GRANDE STPHW:3607217,063 population served2012
SCHUYLKILL HAVEN STPHW:3629917,061 population served2012
EL RENO WWTHW:3564217,060 population served2012
Canandaigua C STPHW:3399017,014 population served2012
SHELTON WPCFHW:2659617,010 population served2012
TROY WALNUT CREEK WWTPHW:2510817,000 population served2012
FRANKFORT WEST REGIONAL STPHW:2759617,000 population served2012
MANNING TREATMENT PLANTHW:3714017,000 population served2008
MIDDLEBRANCH CREEKHW:3719017,000 population served2008
Pampa WWTPHW:3758117,000 population served2012
Still Creek WWTPHW:3775217,000 population served2012
IONIA STPHW:3088816,989 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.