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
Fernwood Water and Sewerage AssociatiHW:31684	184 population served	2012
HUNNEWELL WWTPHW:32359	184 population served	2012
DUNNING WWTPHW:32782	184 population served	2012
Amesville Cluster Sewers and WWTPsHW:34934	184 population served	2012
WISHRAM SEWER SYSTEMHW:38591	184 population served	2012
BEAMAN WWTPHW:28510	183 population served	2012
LURAY WWTPHW:29614	183 population served	2012
NEWTOWN WWTPHW:31828	183 population served	2012
HUGHESVILLE WWTPHW:32039	183 population served	2012
FUNK WWTPHW:32819	183 population served	2012
Pittsburg WWTFHW:33235	183 population served	2012
Knox County Mount Liberty WWTPHW:35086	183 population served	2012
WOODLAND POTWHW:31660	182 population served	2012
WINNETT LAGOONSHW:32502	182 population served	2012
FORDYCE WWTPHW:32685	182 population served	2012
RAYMOND WWTPHW:33005	182 population served	2012
EDMORE LAGOONHW:34567	182 population served	2012
GOLDEN VALLEY LAGOONHW:34589	182 population served	2012
AUSTINVILLE WWTP and Coll SysHW:38527	182 population served	2012
MNTN TOP PSD GORMANIA WWTPHW:38845	182 population served	2012
SPRINGERTON STPHW:27881	181 population served	2012
GOFF WWTPHW:29363	181 population served	2012
WARBA STPHW:31316	181 population served	2012
DUBOIS WWTPHW:32781	181 population served	2012
ALBIN LAGOONHW:39697	181 population served	2012
Fulton Municipal WWTPHW:28421	180 population served	2012
FLORIS LAGOONHW:28683	180 population served	2012
FR CO SD CENTROPOLIS WWTPHW:29517	180 population served	2012
SUN VALLEY ESTATESHW:31943	180 population served	2012
SOUTH GREENFIELDHW:32408	180 population served	2012
ALDER MADISON CSDHW:32609	180 population served	2012
Hamden T Delancy Hamlet WWTFHW:33773	180 population served	2012
Bellmont T Brainardsville STPHW:33826	180 population served	2012
Chenango T SD 10 STPHW:33903	180 population served	2012
Elma T SD7 STP and Onsite SystemsHW:34089	180 population served	2012
Fulton Co Pleasant View WWTPHW:35118	180 population served	2012
ELKTON STPHW:36119	180 population served	2012
SOUTH CREEK TWPHW:36472	180 population served	2012
DAVIDSON TWP _ SONESTOWN STPHW:36852	180 population served	2012
BCPSSD KIMBERLY HGTS WWTPHW:38793	180 population served	2012
CASS WWTPHW:38962	180 population served	2012
Peninsula State Park WWTPHW:39117	180 population served	2012
STEPHENSVILLE SD 1 WWTPHW:39634	180 population served	2012
DUNDEE STLHW:28639	179 population served	2012
GARFIELD WWTPHW:29712	179 population served	2012
HARDY WWTPHW:32843	179 population served	2012
UPLAND WWTPHW:33063	179 population served	2012
Greene Co Clifton WWTP and SewersHW:35053	179 population served	2012
ALPHA STPHW:31158	178 population served	2012
HURLEY WWTPHW:32367	178 population served	2012
FILLEY WWTPHW:32674	178 population served	2012
MASON CITY WWTPHW:32924	178 population served	2012
Richland Co Skyview TerraceHW:37269	178 population served	2008
ROCKLAND SD 1 STPHW:39588	178 population served	2012
WESTBORO SD 1 STPHW:39612	178 population served	2012
DEAVER LAGOONHW:39679	178 population served	2012
SANTA CLAUS WPCPHW:27284	177 population served	2012
DECATUR CITY WWTPHW:28612	177 population served	2012
WELTON STPHW:29124	177 population served	2012
ADMIRE WWTPHW:29471	177 population served	2012
Trumbull Co Newton Falls 2 WWTPHW:35457	177 population served	2012
REYDON WWTHW:35970	177 population served	2012
LONG CREEK STPHW:36142	177 population served	2012
DELAWARE STLHW:28616	176 population served	2012
SALISBURY Circleview Subd WWTPHW:32298	176 population served	2012
Ashtabula Co Meadowood Allotmt WWTPHW:34849	176 population served	2012
ELBE STPHW:38703	176 population served	2012
Fountain Hill WWTPHW:25474	175 population served	2012
Snyder SDHW:26476	175 population served	2012
Fulda Constructed WetlandHW:28388	175 population served	2012
LARRABEE WWTPHW:28797	175 population served	2012
CASTALIA STLHW:29172	175 population served	2012
CRELLIN WWTPHW:30599	175 population served	2012
Otis Dept of Public WorksHW:30812	175 population served	2012
BOBO UTILITY DISTRICTHW:31697	175 population served	2012
Peru T Valcour Sewer DistrictHW:33784	175 population served	2012
Auglaize Co Beverly Hills WWTPHW:35303	175 population served	2012
SUMPTER STPHW:36190	175 population served	2012
LIBERTY TWP MOORESBURG STPHW:36661	175 population served	2012
EXELAND STPHW:39212	175 population served	2012
BARNUM STLHW:28505	174 population served	2012
THOR LAGOONHW:29079	174 population served	2012
ROBELINE WWCTSHW:30286	174 population served	2012
TRUMBULL WWTPHW:33061	174 population served	2012
ROCKY WWTHW:36016	174 population served	2012
AMANI SD STPHW:39628	174 population served	2012
Bassett WWTPHW:25623	173 population served	2012
ALLERTON NORTH LAGOONHW:28474	173 population served	2012
CLEMONS STLHW:28577	173 population served	2012
TYLERTON WWTPHW:30621	173 population served	2012
Manchester Park WWTP PrivateHW:30685	173 population served	2012
SUMMIT POTW NORTHHW:31622	173 population served	2012
Halfway WWTPHW:32413	173 population served	2012
GRANDIN LAGOONHW:34464	173 population served	2012
Pickaway Co Wintergreen Hills WWTPHW:35344	173 population served	2012
Darke Co Rolin Acres WWTPHW:35531	173 population served	2012
HUNTER WWTHW:35794	173 population served	2012
UNITY STPHW:36197	173 population served	2012
OHIOPYLE BORO STPHW:36774	173 population served	2012
DRAKESVILLE WWTPHW:28635	172 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.