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
MOULTON STLHW:28896	605 population served	2012
TRIBUNE WWTPHW:29737	605 population served	2012
DE WITT WWTPHW:32775	605 population served	2012
Freeville V WWTPHW:33965	605 population served	2012
ROWAN COUNTY SECOND CRK WWTPHW:34375	605 population served	2012
Corning WWTP and SewersHW:35062	605 population served	2012
Quaker City WWTP and Sewer SystemHW:35374	605 population served	2012
Henderson County WestoverHW:37400	605 population served	2012
SEXTONVILLE SD STPHW:39603	605 population served	2012
Carey Wastewater FaciltyHW:27457	604 population served	2012
UNIVERSITY PARK STLHW:29192	604 population served	2012
MINTO LAGOONHW:34636	604 population served	2012
Pleasant City WWTP and SewersHW:35352	604 population served	2012
APPOMATTOX STP NO IIHW:38384	604 population served	2012
ALHAMBRA STPHW:27651	603 population served	2012
TAMMS WWTPHW:27859	603 population served	2012
LOGAN WWTPHW:29686	603 population served	2012
MCLAIN POTWHW:31534	603 population served	2012
Holly Grove WWTPHW:25689	602 population served	2012
MAPLE RAPIDS WWTPHW:30818	602 population served	2012
Pangburn WWTPHW:25763	601 population served	2012
CAWKER CITY BURUC WWTPHW:29673	601 population served	2012
GRENADA POTW HOLCOMB FACILITYHW:31665	601 population served	2012
MARSHFIELD W P CHW:38250	601 population served	2012
PLUM CITY WWTPHW:39392	601 population served	2012
Jeff Road WWTPHW:25054	600 population served	2012
Sheridan WWTFHW:26088	600 population served	2012
LOST HILLS WWTFHW:26157	600 population served	2012
BAKER WWTFHW:26180	600 population served	2012
Pine Valley WWTFHW:26248	600 population served	2012
AGUILAR TOWN OFHW:26294	600 population served	2012
Norwood Sanitation DistrictHW:26501	600 population served	2012
BRANFORD WWTPHW:26972	600 population served	2012
FRANKLIN Village ofHW:27940	600 population served	2012
ATLANTA WWTPHW:27979	600 population served	2012
BURNETTSVILLE WWTPHW:28221	600 population served	2012
DENVER WWTPHW:28318	600 population served	2012
CHALMERS TOWN OFHW:28377	600 population served	2012
GRANDVIEW WWTPHW:28715	600 population served	2012
QUASQUETON STLHW:28983	600 population served	2012
Ewell Rhodes Point WWTPHW:30619	600 population served	2012
NEW GERMANY STATE PARKHW:30657	600 population served	2012
CHURCH HILL STPHW:30687	600 population served	2012
NORTHLAND TRAILER PARKHW:31726	600 population served	2012
ARLEEHW:32604	600 population served	2012
Hopkinton WWTFHW:33198	600 population served	2012
Warner WWTFHW:33201	600 population served	2012
Santa Ana Pueblo ofHW:33465	600 population served	2012
Shandaken T Pine Hill STPNYCDEPHW:33624	600 population served	2012
Neversink T Grahamsville STP NYCDEPHW:33627	600 population served	2012
Glenville T Woodhaven STPHW:33730	600 population served	2012
West Monroe T Big BaySTPandOn SitesHW:33956	600 population served	2012
Hume T Fillmore WWTP and OnsitesHW:34116	600 population served	2012
TRENTON WWTPHW:34288	600 population served	2012
NEW ENGLAND LAGOONHW:34644	600 population served	2012
Madison Co SD 1 WWTP and SewersHW:34793	600 population served	2012
Summit Co Norton Acres WWTP 13HW:35436	600 population served	2012
DUFUR STPHW:36116	600 population served	2012
Granville Twp Strodes Mills STPHW:36489	600 population served	2012
INDIANA CO MSA HILLSDALE STPHW:37018	600 population served	2012
Norwich TwpHW:37040	600 population served	2012
RIDGEWAY TOWN OFHW:37076	600 population served	2008
BUCKEYE FOREST WWTPHW:37220	600 population served	2008
La Salle Crossing WWTPHW:38041	600 population served	2012
LK WAPOGASSET BEAR TRAP LK WWTPHW:39554	600 population served	2012
IXONIA SD 1 STPHW:39584	600 population served	2012
WALNUT GROVE WWTPHW:31353	599 population served	2012
PENN S CREEK STPHW:36666	599 population served	2012
RIVERDALE MILLS W and S DISTRICTHW:37245	599 population served	2008
KENSETT WWTPHW:28774	598 population served	2012
ST PAUL WWTPHW:29597	598 population served	2012
MERIGOLD POTWHW:31544	598 population served	2012
Metamora WWTP and Sewer SystemHW:35271	598 population served	2012
PATCH GROVE STPHW:39382	598 population served	2012
Huttig WWTPHW:25746	597 population served	2012
IRETON WWTPHW:28763	597 population served	2012
BELT WWTPHW:32518	597 population served	2012
WELCH WWTHW:35771	597 population served	2012
OKAY WWTHW:36006	597 population served	2012
Rushville V STPHW:34036	596 population served	2012
Marion Co Fountain Place SD 5AHW:34890	596 population served	2012
EAST WALKER COUNTY WWTPHW:25015	595 population served	2012
WALDRON WWSLHW:31199	595 population served	2012
CULBERTSON WWTPHW:32762	595 population served	2012
FAIRFIELD STPHW:38543	595 population served	2012
BROWNSVILLE WWTPHW:39131	594 population served	2012
LELAND TWP WWSLHW:31180	593 population served	2012
Middle Point WWTP and Sewer SystemHW:35274	593 population served	2012
HAMILTON STPHW:38495	593 population served	2012
ABRAMS SD 1 STPHW:39066	593 population served	2012
BYRON LAGOONHW:39678	593 population served	2012
ATTICA WWTPHW:29224	592 population served	2012
Chaumont V STPHW:33842	592 population served	2012
PEMBINA LAGOONHW:34656	592 population served	2012
RAY LAGOONHW:34663	592 population served	2012
ALEPPO TWP SEWICKLEY HTS MANOR STPHW:36850	592 population served	2012
SURING WWTPHW:39472	592 population served	2012
THREE LAKES SD WWTPHW:39596	592 population served	2012
Davis Junction WWTPHW:27831	591 population served	2012
INDIAN ISLAND WWTFHW:30521	591 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.