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
PARMA WWTPHW:32095	713 population served	2012
LOWRY CITY WWTPHW:32419	713 population served	2012
OTISVILLE LAGOON CSHW:31191	712 population served	2012
EXETER WWTPHW:33027	712 population served	2012
TIGNAL WPCPHW:27091	711 population served	2012
KEWANNA STPHW:28250	711 population served	2012
PENNVILLE WWTPHW:28286	711 population served	2012
ELLENDALE STPHW:31350	711 population served	2012
JUNIATA WWTPHW:33003	711 population served	2012
ALAMO WWTFHW:33109	711 population served	2012
WILTON LAGOONHW:34478	711 population served	2012
GOVERNMENT CAMP STPHW:36126	711 population served	2012
Valley Ridge CWC STPHW:39089	711 population served	2012
GOLDFIELD STLHW:28707	710 population served	2012
CUBA LAGOONHW:33463	710 population served	2012
Waverly T St Regis STP and On SiteHW:33801	710 population served	2012
BOSWELL WWTHW:35757	710 population served	2012
SCIO STPHW:36181	710 population served	2012
Bardwell WWTPHW:37836	710 population served	2012
REESEVILLE WWTPHW:39416	710 population served	2012
GILBERT STPHW:30133	709 population served	2012
SARDIS WTCPHW:27285	708 population served	2012
NORBORNE WWTPHW:32113	708 population served	2012
FAIRFIELD WWTFHW:32499	708 population served	2012
FAIRMONT WWTPHW:32800	708 population served	2012
BINGER WWTHW:35604	708 population served	2012
HORSESHOE BEND S_T FACILITYHW:27439	707 population served	2012
SUTHERLAND STLHW:29071	707 population served	2012
LIBERTY POTWHW:31525	707 population served	2012
NEWLAND WWTPHW:34134	707 population served	2012
Amanda WWTP and Sewer SystemHW:34812	707 population served	2012
JARRATT STPHW:38388	707 population served	2012
EVERLY WTPHW:29182	706 population served	2012
St Clement s Shores WWTPHW:30613	706 population served	2012
GREENFIELD TWP BLAIR STPHW:36596	706 population served	2012
Swink Town ofHW:26504	705 population served	2012
ALTAMONT STP NORTHHW:27960	704 population served	2012
Charlotte Hall Veterans Home WWTSHW:30692	704 population served	2012
BENTON NICHOLSON STPHW:36432	704 population served	2012
NORWALK WWTPHW:39361	703 population served	2012
HOLDINGFORD STPHW:31271	702 population served	2012
URBANNA STPHW:38447	702 population served	2012
SEYMOUR STLHW:29030	701 population served	2012
GALVA WWTPHW:29437	701 population served	2012
ROXIE POTWHW:31597	701 population served	2012
NORTH FREEDOM STPHW:39360	701 population served	2012
OAKMAN LAGOON HCRHW:25073	700 population served	2012
Duncan WWTFHW:25298	700 population served	2012
Jerome WWTFHW:25384	700 population served	2012
Boulder Creek WWTFHW:25906	700 population served	2012
MOUNTAIN WSDHW:26326	700 population served	2012
NEW HARTFORD WPCFHW:26574	700 population served	2012
Port of the Islands South WWTFHW:26763	700 population served	2012
Keystone Heights WWTPHW:26904	700 population served	2012
WALDRON CD WWTPHW:28020	700 population served	2012
MONTGOMERY WWTPHW:28233	700 population served	2012
MATTHEWS WWTPHW:28255	700 population served	2012
LAKE ELIZAHW:28342	700 population served	2012
MONROE WEST STLHW:28887	700 population served	2012
LINWOOD SUBDIVISIONHW:30180	700 population served	2012
Elba Twp WWTP LagoonHW:30916	700 population served	2012
DODGE WWTPHW:32812	700 population served	2012
Newfields WWTFHW:33206	700 population served	2012
Edgewood Town ofHW:33503	700 population served	2012
Hyde Park T SD1 WWTPHW:33587	700 population served	2012
Tivoli V Sewers and WWTPHW:33599	700 population served	2012
Cornwall T Firthcliff SD STPHW:33605	700 population served	2012
Rosendale T STP and On Site SysHW:33679	700 population served	2012
Cairo T Cairo hamlet and On SitesHW:33720	700 population served	2012
Theresa V WWTP and On Site SysHW:33853	700 population served	2012
West Mansfield WWTP and Sewer SystemHW:34876	700 population served	2012
Scippo Sewer District WWTP and SewersHW:35348	700 population served	2012
WORCESTER TWP BERWICK PLACE STPHW:36266	700 population served	2012
ROULETTE TWP STPHW:36926	700 population served	2012
HARRISON VALLEY STPHW:36927	700 population served	2012
VERNON TWP WATSON RUN STPHW:36947	700 population served	2012
DUDLEY COALMONT CARBON JMAHW:36984	700 population served	2012
MIDDLETON WASTEWATER LAGOONHW:37454	700 population served	2012
Roan Mtn SP STPHW:37552	700 population served	2012
HELENWOOD STPHW:37559	700 population served	2012
Banquete WWTPHW:37672	700 population served	2012
Avinger WWTPHW:37910	700 population served	2012
STONEY CREEK STPHW:38524	700 population served	2012
OAKDALE WWTPHW:39593	700 population served	2012
WINGATE WWTPHW:28325	699 population served	2012
ALBERT CITY WWTPHW:28466	699 population served	2012
HARDIN STPHW:29863	699 population served	2012
MILLER WWTPHW:32457	699 population served	2012
CRESWELL WWTPHW:34421	699 population served	2012
UNITY STPHW:39489	699 population served	2012
PALMYRA STPHW:27924	698 population served	2012
WINGOHW:30059	698 population served	2012
Oriskany Falls V STPHW:33867	698 population served	2012
BRYCE CANYON CITYHW:38212	698 population served	2012
MONTROSS STPHW:38423	698 population served	2012
MORLEY WWTFHW:32101	697 population served	2012
Mendon WWTP and Sewer SystemHW:35270	697 population served	2012
LEFLORE 5 HOWE WWTHW:35619	697 population served	2012
BRIAR CREEK PARK STPHW:36640	697 population served	2012
SHELBY WWTPHW:29033	696 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.