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

Wastewater treatment plants in the United States

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

Name	Native size	Year
AUSTIN WWTFHW:33132	500 population served	2012
BLUEWATER LAGOONHW:33479	500 population served	2012
Tuxedo T Hamlet WWTPHW:33630	500 population served	2012
Remsen V STPHW:33868	500 population served	2012
Watertown T SD1 STP and On SitesHW:33895	500 population served	2012
Nichols T WWTP and SDHW:33957	500 population served	2012
Savannah T 3 SDGS Sys to 3 STP sHW:33994	500 population served	2012
ENGLEHARD SD WWTPHW:34272	500 population served	2012
Holmes County Jail and Training Center WWTPHW:34741	500 population served	2012
Alexandria WWTP and SewersHW:34801	500 population served	2012
Ostrander WWTP and Sewer SystemHW:35329	500 population served	2012
Charles Mill Sites Lake Cottage WWTPHW:35376	500 population served	2012
Mercer Co West Jefferson WWTPHW:35535	500 population served	2012
QUARTZ MT WWTHW:35821	500 population served	2012
LONE WOLF WWTHW:35862	500 population served	2012
BRADFORD CO W BURLINGTON STPHW:36287	500 population served	2012
EAGLES MERE STPHW:36458	500 population served	2012
ORANGEVILLE BORO STPHW:36637	500 population served	2012
HARLEYVILLE STPHW:37080	500 population served	2008
NORWAY WWTPHW:37184	500 population served	2008
Lefors WWTPHW:37583	500 population served	2012
TIVOLI STPHW:37681	500 population served	2012
Oglesby WWTPHW:37737	500 population served	2012
Tolar WWTPHW:37801	500 population served	2012
West WWTP TeagueHW:37817	500 population served	2012
FALLS MILLS WWTPHW:38310	500 population served	2012
MONTEREY STPHW:38463	500 population served	2012
SAINT CLOUD WWTPHW:39434	500 population served	2012
MORRISON SD 1 STPHW:39550	500 population served	2012
FOREST JUNCTION SD WWTPHW:39566	500 population served	2012
Grand Mesa Metropolitan District 1HW:26460	499 population served	2012
BATAVIA WWTPHW:28506	499 population served	2012
COLLINS STLHW:28585	499 population served	2012
Rockingham County Home WWTFHW:33229	499 population served	2012
Lebanon SD 2 WWTPHW:39545	499 population served	2012
TYTY WPCPHW:27305	498 population served	2012
THOMPSON WWTPHW:29078	498 population served	2012
CENTRALIA WWTPHW:29306	498 population served	2012
ARTESIA POTWHW:31383	498 population served	2012
Danbury St Croix Chippewa JWQCHW:39128	498 population served	2012
EASTERN PRERELEASE STPHW:30650	497 population served	2012
Sudlersville WWTPHW:30688	497 population served	2012
BRANDON WWTPHW:31297	497 population served	2012
Clarksville WWTP and Sewer SystemHW:34877	497 population served	2012
LIME SPRINGS WWTPHW:29168	496 population served	2012
DEARBORN WWTPHW:31853	496 population served	2012
Cattaraugus V WWTP and OnsitesHW:34057	495 population served	2012
Randolph V WWTPHW:34064	495 population served	2012
BIGGS SERVICE DISTRICT WW TREATMENTHW:36089	495 population served	2012
ROYALTON WTFHW:38268	495 population served	2012
ONTARIO WWTPHW:39368	495 population served	2012
Calion WWTPHW:25744	494 population served	2012
ALLERTON SOUTH LAGOONHW:28473	494 population served	2012
BUSSEY STLHW:29181	494 population served	2012
STERLING WWSLHW:30859	493 population served	2012
WEYERHAEUSER STPHW:39511	493 population served	2012
WRIGHTSTOWN SD 1 STPHW:39560	493 population served	2012
Ponce De Leon STPHW:26932	492 population served	2012
HOLTON WWTPHW:28355	492 population served	2012
Georgetown STP 3 Stamping GroundHW:30045	492 population served	2012
FAYETTE POTW NORTH LAGOONHW:31471	492 population served	2012
STOVER SOUTH LAGOONHW:32330	492 population served	2012
BROCKTON LAGOONHW:32572	491 population served	2012
MULLEN WWTPHW:32938	491 population served	2012
Valley Falls V On Site Sysand PropHW:33716	491 population served	2012
CHASE WWTPHW:29237	490 population served	2012
HARTFORD WWTPHW:29571	490 population served	2012
Barton Business Park WWTPHW:30561	490 population served	2012
NORTH POWDER STPHW:36160	490 population served	2012
Kosse WWTPHW:37783	490 population served	2012
PINE HAVEN LAGOONHW:39727	490 population served	2012
LAPAZ WWTPHW:28078	489 population served	2012
SHELDON W P C FHW:38274	489 population served	2012
COLOMA STPHW:39166	489 population served	2012
DUNCOMBE STLHW:28638	488 population served	2012
STANHOPE STLHW:29055	488 population served	2012
HONOR STPHW:31171	488 population served	2012
WMUD Magnolia Heights POTWHW:31415	488 population served	2012
ARCADIA WWTP WESTHW:32428	488 population served	2012
Bauxite WWTPHW:25446	487 population served	2012
PACE POTWHW:31568	487 population served	2012
CHESTER WWTPHW:32741	487 population served	2012
Laura WWTP and Sewer SystemHW:35210	487 population served	2012
PINE TWP TEMPLETON STPHW:36733	487 population served	2012
ETHEL POTWHW:31469	486 population served	2012
Ossipee Center WWTFHW:33157	486 population served	2012
MESITA VILLAGE LAGOONHW:33485	486 population served	2012
LUNENBURG WWTFHW:38296	486 population served	2012
LIZTON SEWAGE TREATMENT FHW:27996	485 population served	2012
DELHI STLHW:28617	485 population served	2012
FARRAGUT STLHW:28680	485 population served	2012
LAMONT STLHW:28792	485 population served	2012
ALTOONA WWTPHW:29759	485 population served	2012
CEDAR RAPIDS WWTPHW:32734	485 population served	2012
NEWBURG HOPEWELL STPHW:36549	485 population served	2012
BUNCETON WWTPHW:32449	484 population served	2012
Mount Blanchard WWTP and SewersHW:34930	484 population served	2012
Portage Co Fairlane Estates WWTPHW:35366	484 population served	2012
WILEY STPHW:26390	483 population served	2012
MICHIGANTOWN WWTPHW:28225	483 population served	2012

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.

US EPA · NPDES Permit Basics

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