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
RANTOUL WWTPHW:29493	241 population served	2012
ALLENVILLE WWTPHW:32078	241 population served	2012
CRAIG WWTPHW:32755	241 population served	2012
OCONTO WWTPHW:32962	241 population served	2012
GRANVILLE LAGOONHW:34591	241 population served	2012
PAGE KINCAID PSD BEARDS FORK TPHW:38837	241 population served	2012
DEER PARK STPHW:39181	241 population served	2012
RUSSELL SD 1 STPHW:39585	241 population served	2012
STONEY CREEK WWTPHW:25237	240 population served	2012
Tollette WWTPHW:25630	240 population served	2012
Rockfield RSDHW:28413	240 population served	2012
CUBA WWTPHW:29308	240 population served	2012
JF CO S D 7 LAKE RDG EST WWTPHW:29419	240 population served	2012
ALBERT WWTPHW:29701	240 population served	2012
LABADIE WWTPHW:32048	240 population served	2012
HUME WWTPHW:32164	240 population served	2012
THEODOSIA WWTPHW:32308	240 population served	2012
South Wind Water and Sewer DistrictHW:32630	240 population served	2012
HAYES CENTER WWTPHW:32847	240 population served	2012
WILLARD VILLAGE OFHW:33403	240 population served	2012
Clayton T Depauville STPHW:33843	240 population served	2012
Moscow WWTP and Sewer SystemHW:35040	240 population served	2012
KREMLIN WWTHW:35795	240 population served	2012
CLOVERDALE STPHW:36106	240 population served	2012
BLENKER SHERRY SD WWTPHW:39620	240 population served	2012
GLADSTONE LAGOONHW:34585	239 population served	2012
BRECKINRIDGE WWTHW:35790	239 population served	2012
MULHALL WWTHW:35880	239 population served	2012
CANADIAN PWA WWTHW:35951	239 population served	2012
NORWOOD LASHW:27077	238 population served	2012
BISON WWTPHW:29703	238 population served	2012
BACKUS CSHW:31294	238 population served	2012
Thompson T Melody Lake SD STPHW:33666	238 population served	2012
METALINE FALLS S_T FACHW:38730	238 population served	2012
Bethune Town ofHW:26485	237 population served	2012
MARATHON WWTPHW:28854	237 population served	2012
READING WWTPHW:29492	237 population served	2012
Erving WWTF No 1HW:30791	237 population served	2012
Cedar Hill Lakes WWTPHW:31926	237 population served	2012
CARROLL WWTPHW:32733	237 population served	2012
GILBY LAGOONHW:34584	237 population served	2012
ZAP LAGOONHW:34714	237 population served	2012
SHIPPINGPORT BORO STPHW:36805	237 population served	2012
POWERS LAKE LAGOONHW:34662	236 population served	2012
Helena WWTP and SewersHW:34942	236 population served	2012
Summit Co Melody Village WWTP 10HW:35435	236 population served	2012
ALMAHW:26416	235 population served	2012
HARVEY STPHW:29178	235 population served	2012
HAZELTON LAGOONHW:34495	235 population served	2012
WALCOTT LAGOONHW:34702	235 population served	2012
Jenera WWTP and Sewer SystemHW:34972	235 population served	2012
SCOTTBURG STPHW:38369	235 population served	2012
Creston Wastewater Treatment PlantHW:38699	235 population served	2012
GRAND VIEW SD 1 STPHW:39097	235 population served	2012
Peetz Town ofHW:26484	234 population served	2012
SMITHLAND WWTPHW:29047	234 population served	2012
WESTGATE WWTPHW:29131	234 population served	2012
GRENOLA WWTPHW:29778	234 population served	2012
DELTA STPHW:30280	234 population served	2012
KENNEDYVILLE STPHW:30605	234 population served	2012
BARNARD WWTPHW:31980	234 population served	2012
VENANGO WWTPHW:32792	234 population served	2012
SHUBERT WWTPHW:32806	234 population served	2012
HUBBARD WWTPHW:32868	234 population served	2012
Olive T Boiceville WWTP and OWTSHW:33678	234 population served	2012
UNION CENTER WWTPHW:39486	234 population served	2012
HENAGAR WWTPHW:25178	233 population served	2012
MT OLIVET WTPHW:30019	233 population served	2012
MOORHEAD WWTPHW:28893	232 population served	2012
REXFORD WWTPHW:29757	232 population served	2012
REEVES LAGOONHW:30217	232 population served	2012
DUDLEY WWTPHW:32129	232 population served	2012
NEHAWKA WWTPHW:32941	232 population served	2012
PAGE LAGOONHW:34456	232 population served	2012
FLASHER LAGOONHW:34577	232 population served	2012
DENISON WWTPHW:29355	231 population served	2012
DOUGLAS WWTPHW:32907	231 population served	2012
WHITEFIELD MIA WWTHW:35830	231 population served	2012
Saint Charles WWTPHW:25471	230 population served	2012
MOFFAT LAGOONHW:26417	230 population served	2012
JOINT SCHOOL DIST 171 TIMBERLINE HS LSASHW:27416	230 population served	2012
Southern MD Prerelease UHW:30651	230 population served	2012
DRUMMOND WWTPHW:32551	230 population served	2012
FROID LAGOONHW:32570	230 population served	2012
BENEDICT WWTPHW:32693	230 population served	2012
BUSHNELL WWTPHW:32717	230 population served	2012
JET WWTHW:35715	230 population served	2012
FT LARAMIE LAGOONHW:39691	230 population served	2012
GARDEN GROVE WWTPHW:28695	229 population served	2012
HOLSTEIN WWTPHW:33002	229 population served	2012
BECKWOURTH WWTFHW:26112	228 population served	2012
REMBRANDT WWTPHW:28993	228 population served	2012
BELVUE WWTPHW:29350	228 population served	2012
WINONA WWTPHW:29664	228 population served	2012
LA MONTE N WEST WWTPHW:32041	228 population served	2012
GURLEY WWTPHW:32836	228 population served	2012
BOELUS WWTPHW:32865	228 population served	2012
Guernsey Co Coventry Estates 1HW:35158	228 population served	2012
NEW PROVIDENCE SEPTICSHW:28919	227 population served	2012
RAKE WWTPHW:28986	227 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.