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
Davenport WWTFHW:26860	900 population served	2012
COTTONWOOD STPHW:27419	900 population served	2012
AVISTON STPHW:27930	900 population served	2012
HYMERA WWTPHW:28065	900 population served	2012
LA FONTAINE WWTPHW:28129	900 population served	2012
MEDORA WWTPHW:28280	900 population served	2012
EARVILLE STPHW:28648	900 population served	2012
SWISHER WWTPHW:29073	900 population served	2012
DOYLINE LAGOONHW:30335	900 population served	2012
WINTERPORT WWTFHW:30458	900 population served	2012
Talbot County Region V WWTPHW:30623	900 population served	2012
Elk Neck State ParkHW:30656	900 population served	2012
PORT HOPE WWSLHW:30869	900 population served	2012
ODESSA NW WWTPHW:31770	900 population served	2012
Meriden WWTFHW:33241	900 population served	2012
Voorheesville V SD1 WWTPHW:33762	900 population served	2012
Greenwich V WPCPHW:33820	900 population served	2012
W PENNSBORO TWP MA STPHW:36484	900 population served	2012
BEAVERTOWN STPHW:36638	900 population served	2012
RICHFIELD AREA JT AUTHHW:37011	900 population served	2012
WAGENER WWTPHW:37181	900 population served	2008
BYRDSTOWN WWTPHW:37335	900 population served	2012
Decaturville STPHW:37364	900 population served	2012
Centerville WWTPHW:37768	900 population served	2012
Tioga WWTPHW:37840	900 population served	2012
Omaha WWTPHW:37935	900 population served	2012
JOAQUIN STPHW:37964	900 population served	2012
DOC Nottoway Correctional CenterHW:38514	900 population served	2012
PHELPS SD 1 STPHW:39194	900 population served	2012
PALO WWTPHW:28952	899 population served	2012
SPRINGFIELD STPHW:30196	899 population served	2012
AUBURNDALE WWTPHW:39083	899 population served	2012
MANILLA WWTPHW:28848	898 population served	2012
MONTPELIER SDHW:28891	898 population served	2012
VANCEBORO WWTPHW:34200	898 population served	2012
Edon WWTP and Sewer SystemHW:35090	898 population served	2012
BONANZA STPHW:36092	897 population served	2012
Commercial Point WWTP and SewersHW:34788	896 population served	2012
POND CREEK WWTHW:35816	896 population served	2012
BRIMFIELD SDHW:27701	895 population served	2012
CANAAN VALLEY PSD TIMBERLINE WWTPHW:39019	895 population served	2012
SULLIVAN SD 1 WWTPHW:39622	895 population served	2012
LA JARA WWTPHW:26284	894 population served	2012
ADAIR WWTPHW:28460	894 population served	2012
ELM CREEK WWTPHW:32883	894 population served	2012
RYAN UA WWTHW:35582	894 population served	2012
BLAIR WWTHW:35837	894 population served	2012
Poygan PoySippi SD 1 WWTPHW:39552	894 population served	2012
MARION LAGOONHW:30326	893 population served	2012
Grand Ridge WWTFHW:26934	892 population served	2012
BACONTON WPCPHW:27044	892 population served	2012
BLAIRSVILLE WPCPHW:27145	892 population served	2012
LULA STABILIZATION PONDHW:27242	892 population served	2012
NEOLA WWTPHW:28909	892 population served	2012
Diaz WWTPHW:25637	891 population served	2012
Stephens WWTPHW:25698	891 population served	2012
New Knoxville WWTP and Sewer SystemHW:35299	891 population served	2012
BURNS FLAT SOUTH WWTHW:35602	891 population served	2012
BURNS FLAT NORTH WWTHW:35603	891 population served	2012
Covelo WWTPHW:25807	890 population served	2012
VAUGHN SEWAGE PONDSHW:33407	890 population served	2012
HICKORY VIEW TERRACE STPHW:37008	890 population served	2012
WARTBURG STPHW:37532	890 population served	2012
Sierra Blanca WWTPHW:37615	890 population served	2012
PITTSFORD WTHW:38261	890 population served	2012
Oak Grove Heights WWTPHW:25777	889 population served	2012
LAWRENCE STPHW:31051	889 population served	2012
LAMOURE LAGOONHW:34612	889 population served	2012
CARROLLTON HCR LAGOONHW:24999	888 population served	2012
REDWAY WWTFHW:25795	888 population served	2012
WAKEFIELD WWTPHW:29469	888 population served	2012
COTTONWOOD FALLS WWTPHW:29555	888 population served	2012
JETMORE WWTPHW:29715	888 population served	2012
Alger WWTP and SewersHW:34725	888 population served	2012
Lorain Co Brentwood Lake WWTPHW:35230	888 population served	2012
TABERNASH MEADOWS WSDHW:26430	887 population served	2012
NEWARK STPHW:27879	887 population served	2012
NEWELL WWTPHW:28912	887 population served	2012
BUHL WWTPHW:31236	887 population served	2012
CANDOR WWTPHW:34317	887 population served	2012
EMLENTON STPHW:36874	887 population served	2012
CENTERVILLE STPHW:37303	887 population served	2012
DORRIS WWTFHW:25818	886 population served	2012
ANNAWAN STPHW:27687	886 population served	2012
SAREPTA LAGOONHW:30336	886 population served	2012
WAVERLY WWTPHW:32171	886 population served	2012
ENDERLIN LAGOONHW:34476	886 population served	2012
LONE ROCK STPHW:39301	886 population served	2012
PINEDALE WWTPHW:25238	885 population served	2012
BOLINAS WWTFHW:25875	885 population served	2012
Hanover WWTP and SewersHW:34802	885 population served	2012
Wilbur Wastewater Treatment PlantHW:38759	885 population served	2012
DAYTON WWTPHW:28459	884 population served	2012
DEERFIELD WWTPHW:29707	884 population served	2012
Hamden WWTP and Sewer SystemHW:34771	884 population served	2012
CAVE SPRINGS WPCPHW:27160	883 population served	2012
CLAY CITY WWTPHW:28222	883 population served	2012
DETOUR STPHW:31157	883 population served	2012
OOLOGAH PWA WWTHW:35974	883 population served	2012
Lake Bruce CD WWTPHW:28427	882 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.