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
Amo Coatsville CD WWTPHW:27992	995 population served	2012
LANSING WWTPHW:28794	995 population served	2012
BURLINGAME WWTPHW:29476	995 population served	2012
NORTH ENGLISH WWTPHW:28926	994 population served	2012
Clermont Co Arrowhead Park WWTPHW:35044	994 population served	2012
MCCLURE MUN AUTH STPHW:36607	994 population served	2012
Fairfield Bay Dave Creek WWTPHW:25457	993 population served	2012
PINE MOUNTAIN WPCPHW:27273	993 population served	2012
FOWLER WWTPHW:30815	993 population served	2012
WAYNOKA WWTHW:36021	993 population served	2012
MANNINGTON WWTPHW:38906	992 population served	2012
HOTCHKISS WWTPHW:26374	991 population served	2012
OXFORD WWTPHW:29274	991 population served	2012
NORTH BRANCH WWTPHW:30921	991 population served	2012
ANDERSON TWP RSD STPHW:28358	990 population served	2012
TEXICO MUNIC WWT PLANTHW:33430	990 population served	2012
CAMBRIA WWTPHW:39396	990 population served	2012
WOLCOTT WWTPHW:28136	989 population served	2012
ROSSVILLE WWTPHW:29397	989 population served	2012
BINGHAM SEWAGE TREATMENTHW:30474	989 population served	2012
West Swanzey WWTFHW:33236	989 population served	2012
SEARSPORT WWTFHW:30471	988 population served	2012
SPRING CITYHW:38167	988 population served	2012
Wilson WWTPHW:25590	987 population served	2012
New Washington WWTP and SewersHW:34883	987 population served	2012
JAMESTOWN WWTPHW:27972	986 population served	2012
COLUMBIA POTW NORTHHW:31431	986 population served	2012
LAUREL WWTPHW:32684	986 population served	2012
THOMPSON LAGOONHW:34488	986 population served	2012
Greater Bayfield WWTPHW:39098	986 population served	2012
ST JOE Spencerville WWTPHW:28046	985 population served	2012
Altheimer WWTPHW:25641	984 population served	2012
AMANA WWTPHW:29210	984 population served	2012
ELSIE WWTPHW:30817	984 population served	2012
COOPERSTOWN LAGOONHW:34551	984 population served	2012
Hopedale WWTP and Sewer SystemHW:35178	984 population served	2012
QUAPAW PWA WWTHW:35940	984 population served	2012
MARCELLUS LAGOONHW:31045	983 population served	2012
SMITHVILLE POTWHW:31615	983 population served	2012
AUXVASSE WWTPHW:32114	983 population served	2012
CHAPPELL WWTPHW:32740	983 population served	2012
PARRISH HCR LAGOONHW:25083	982 population served	2012
MILLERSBURGHW:29875	982 population served	2012
SPERRY USA WWTHW:35678	981 population served	2012
TALLADEGA AIRPORT IND WWTPHW:25106	980 population served	2012
MILLERSBURG WWTPHW:28241	980 population served	2012
RAYFIELD SUBDHW:31938	980 population served	2012
Santa Clara Pueblo ofHW:33504	980 population served	2012
Schoharie V STPHW:33759	980 population served	2012
MAGNOLIA WWTPHW:34218	980 population served	2012
Farmersville WWTP and Sewer SystemHW:35103	980 population served	2012
TALLADEGA BRECON WWTPHW:25103	979 population served	2012
DIMONDALE WWTPHW:30832	979 population served	2012
Borrego Springs WWRFHW:26262	978 population served	2012
CALMAR WWTPHW:29171	978 population served	2012
CRENSHAW POTWHW:31439	978 population served	2012
MEEKER WWTHW:35873	978 population served	2012
CAMBRIA TWP SEW AUTHHW:36600	978 population served	2012
Mammoth Spring WWTPHW:25557	977 population served	2012
WRIGHT TWP STPHW:30905	977 population served	2012
ELBERFELD WWTPHW:28108	976 population served	2012
MANKATO WWTPHW:29458	976 population served	2012
AU GRES WWSLHW:31077	976 population served	2012
BEAVER MEADOWS BOROHW:36407	976 population served	2012
ELK MOUND WWTPHW:39203	976 population served	2012
Hot Springs Southwest WWTPHW:25664	975 population served	2012
Waverly WWTFHW:26853	975 population served	2012
HAVEN WWTPHW:29254	975 population served	2012
ASHLAND WWTPHW:29325	975 population served	2012
CALEDONIA POTWHW:31412	975 population served	2012
Newport WSD WWTP and Sewer SystemHW:34762	975 population served	2012
BRAzEAU SD 1 STPHW:39060	975 population served	2012
LITTLE SUAMICO SD 1 WWTPHW:39594	975 population served	2012
NEW LONDON WWTPHW:32271	974 population served	2012
Union Springs V STPHW:33914	974 population served	2012
FAIRVIEW PARK WWTPHW:28054	973 population served	2012
SLOAN WWTPHW:29046	973 population served	2012
HAGERMAN STAB PONDHW:33424	973 population served	2012
ANITA STLHW:28483	972 population served	2012
WETUMKA WWT SOUTHHW:35835	972 population served	2012
ROACHDALE WWTPHW:28347	971 population served	2012
MCGREGOR WWTPHW:28839	971 population served	2012
LEXINGTON COL SYSHW:37198	971 population served	2008
DUBOIS LAGOONHW:39686	971 population served	2012
TOWN CREEK WWTPHW:25222	970 population served	2012
WINDFALL WWTPHW:28381	970 population served	2012
PHILIPSBURG WWTPHW:32552	970 population served	2012
BATTLE CREEK WWTPHW:33057	970 population served	2012
MOUNTAIN VIEW PWA WWTHW:35864	970 population served	2012
AURORA STPHW:36086	970 population served	2012
ALMA WWTPHW:39068	970 population served	2012
GENTRYVILLE WWTPHW:28363	969 population served	2012
NEW HOULKA POTW WESTHW:31507	969 population served	2012
MILLVILLE BORO STPHW:36598	969 population served	2012
Deep Creek Lake State ParkHW:30658	968 population served	2012
BUFFALO WWTPHW:38983	967 population served	2012
Bearden WWTPHW:25695	966 population served	2012
NOTASULGA LAGOON AND SPRAYFIELDHW:25203	965 population served	2012
NORTH BONNEVILLE S_T FACHW:38732	965 population served	2012
BIOLA WWTPHW:26114	964 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.