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
CENTRAL HAMPSHIRE PSD GREEN SPRING TPHW:38852	270 population served	2012
TETONIA S_T FACILITYHW:27514	269 population served	2012
BLAIRSBURG STLHW:28517	269 population served	2012
MINGO STLHW:28881	269 population served	2012
OWENDALE WWSLHW:30868	269 population served	2012
KINGSVILLE WWTPHW:32026	269 population served	2012
DRAKES BRANCH STPHW:38379	269 population served	2012
LOVETTSVILLE S T PHW:38507	269 population served	2012
PISGAH STLHW:28964	268 population served	2012
BURNS WWTPHW:29797	268 population served	2012
FOREST CITY WWTPHW:31972	268 population served	2012
WELLSVILLE EAST WWTPHW:32147	268 population served	2012
RYEGATE WWTPHW:32550	268 population served	2012
TALMAGE WWTPHW:32906	268 population served	2012
GOLTRY WWTHW:35713	268 population served	2012
FIFIELD SD 1 STPHW:39600	268 population served	2012
CHELSEA LAGOONHW:28563	267 population served	2012
HARVEYVILLE WWTPHW:29487	267 population served	2012
HILLSDALE I D WWTPHW:29512	267 population served	2012
PACHUTA POTWHW:31609	267 population served	2012
VANDUSER WWTPHW:32104	267 population served	2012
THEDFORD WWTPHW:33053	267 population served	2012
SHUMWAY WASTE TREATMENT PHW:27560	266 population served	2012
NEOSHO RAPIDS WWTPHW:29585	266 population served	2012
MARIETTA POTW HCR LAGOONHW:31664	266 population served	2012
HARRISBURG WWTPHW:31923	266 population served	2012
CRAWFORDSVILLE WWTPHW:28597	265 population served	2012
WHITE ROCK WWTPHW:30588	265 population served	2012
FALCON POTWHW:31685	265 population served	2012
MADRID WWTPHW:32791	265 population served	2012
LITCHFIELD WWTPHW:32851	265 population served	2012
PLEASANT DALE WWTPHW:32995	265 population served	2012
SEMINOLE 3 CROMWELL WWTHW:35978	265 population served	2012
SLTMA LAWN STPHW:36345	265 population served	2012
WARM SPRINGS REHAB WWTFHW:25937	264 population served	2012
DELOIT STLHW:29202	264 population served	2012
CADWELL WPCPHW:27154	263 population served	2012
GREELEY STLHW:28718	263 population served	2012
ABERCROMBIE LAGOONHW:34502	263 population served	2012
CHOCTAW CO 1 GRANT WWTHW:35759	263 population served	2012
KAYCEE LAGOONHW:39666	263 population served	2012
MOCCASIN WWTFHW:26080	262 population served	2012
St Thomas WWTPHW:32022	262 population served	2012
BELL SD 1 STPHW:39172	262 population served	2012
EMMETT LAGOONHW:31072	261 population served	2012
HUNTER LAGOONHW:34461	261 population served	2012
Oil Trough WWTPHW:25632	260 population served	2012
ALBION SEWAGE TRT FACHW:27519	260 population served	2012
Lisbon T STP and On Site SystemsHW:33882	260 population served	2012
Portage Co Western Reserve WWTPHW:35365	260 population served	2012
Stark Co Spring Valley Allotment WWTPHW:35503	260 population served	2012
ST THOMAS TWP EDENVILLE STPHW:36580	260 population served	2012
Streetman WWTPHW:37797	260 population served	2012
ShorehamHW:38305	260 population served	2012
HANSTON WWTPHW:29713	259 population served	2012
SEVERY WWTPHW:29784	259 population served	2012
WASHINGTON CO PWSD 4 HOLIDAYHW:32260	259 population served	2012
RICHEY WWTPHW:32545	259 population served	2012
SUMNER WWTPHW:33045	259 population served	2012
GRATIOT STPHW:39238	259 population served	2012
LISCOMB STLHW:28819	258 population served	2012
CASTOR STPHW:30229	258 population served	2012
EDWARDS POTW SOUTHEASTHW:31464	258 population served	2012
HOPE LAGOONHW:34604	258 population served	2012
MARSHALL WWTHW:35614	258 population served	2012
ALBRIGHT WWTPHW:38969	258 population served	2012
CANTRIL WWTPHW:28547	257 population served	2012
DAVIS CITY WWTPHW:28611	257 population served	2012
LESTER STLHW:28810	257 population served	2012
LUXEMBURG WWTPHW:28834	257 population served	2012
MULLINVILLE WWTPHW:29270	257 population served	2012
BAZINE WWTPHW:29704	257 population served	2012
GONVICK STPHW:31358	257 population served	2012
ROSELAND WWTPHW:33013	257 population served	2012
Carroll County Home WWTFHW:33226	257 population served	2012
Keo WWTPHW:25674	256 population served	2012
MESERVEY STLHW:28874	256 population served	2012
BROOKVILLE WWTPHW:29611	256 population served	2012
BURDETT WWTPHW:29709	256 population served	2012
Geauga Co Kimberly Estates WWTPHW:35132	256 population served	2012
Muskingum Co SD 57 AdamsvilleHW:35398	256 population served	2012
Wabbaseka WWTPHW:25643	255 population served	2012
Letona WWTPHW:25761	255 population served	2012
Elk Bend Sewer SystemHW:27361	255 population served	2012
Monterey WWTPHW:28438	255 population served	2012
PATON WWTPHW:28957	255 population served	2012
UTICA WWTPHW:29739	255 population served	2012
LURAND POTWHW:31701	255 population served	2012
CLATONIA WWTPHW:32672	255 population served	2012
DAWSON WWTPHW:32805	255 population served	2012
Washington Co Stacy Meadowcrest Subdivision WWTP and SewersHW:34759	255 population served	2012
Harrell WWTPHW:25495	254 population served	2012
KIT CARSON WWTPHW:26398	254 population served	2012
SN CO SD 2 WWTPHW:29428	254 population served	2012
WALKERVILLE STPHW:31090	254 population served	2012
SPICKARD WWTPHW:32294	254 population served	2012
CARTER WWTHW:35725	254 population served	2012
GALT WWTPHW:32243	253 population served	2012
PANAMA STPHW:32986	253 population served	2012
TOWER CITY LAGOONHW:34457	253 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.