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
KINGSTON WWTPHW:39283	281 population served	2012
COULTERVILLE WWTFHW:25979	280 population served	2012
DEDHAM STLHW:28613	280 population served	2012
LOW MOOR WWTPHW:28831	280 population served	2012
MARTELLE WASTE STAB PONDSHW:28860	280 population served	2012
LENORA WWTPHW:29687	280 population served	2012
PRESCOTT WWTPHW:29817	280 population served	2012
BRASHEAR WWTPHW:32209	280 population served	2012
JOHNSON WWTPHW:32658	280 population served	2012
Newbury WWTFHW:33199	280 population served	2012
Shelter Island T STPHW:33565	280 population served	2012
Wayne Co Hillcrest WWTPHW:34843	280 population served	2012
Geauga Co Wintergreen WWTPHW:35131	280 population served	2012
Perry Co Crown Wehrle Estates WWTPHW:35340	280 population served	2012
ROOSEVELT PWA WWTHW:35863	280 population served	2012
MARLAND PWA WWTHW:35921	280 population served	2012
NOWATA CO RWandSD 1 WANNHW:35931	280 population served	2012
PITTSBURG PWA WWTHW:35955	280 population served	2012
BRADY TWP NORTHWEST STPHW:36653	280 population served	2012
GOODRICH STPHW:37977	280 population served	2012
KIRON WWTPHW:28783	279 population served	2012
CALVIN STPHW:35831	279 population served	2012
Eckley Town ofHW:26486	278 population served	2012
CENTER POINTHW:28059	278 population served	2012
COIN WWTPHW:28581	278 population served	2012
ATHENS STPHW:30231	278 population served	2012
LINNEUS WWTPHW:32357	278 population served	2012
MANITOU WWTHW:36002	278 population served	2012
CLOVER SD 1 STPHW:39250	278 population served	2012
ROzELLVILLE SD 1 STPHW:39589	278 population served	2012
Parkdale WWTPHW:25477	277 population served	2012
UNIONDALE WWTPHW:28050	277 population served	2012
WAUCOMA WWTPHW:29165	277 population served	2012
BEATTIE WWTPHW:29305	277 population served	2012
BLUE MOUND WWTPHW:29470	277 population served	2012
MORRILL WWTPHW:29534	277 population served	2012
Stratton WWTP and Sewer SystemHW:35429	277 population served	2012
HARRISVILLE STPHW:31033	276 population served	2012
LINDSAY WWTPHW:32872	276 population served	2012
EAKLEY WWTHW:35744	276 population served	2012
CLEGHORN WWTPHW:28576	275 population served	2012
MAURICE WWTPHW:28865	275 population served	2012
RIPPEY WWTPHW:29001	275 population served	2012
BU CO SD 9 WWTP ROSALIAHW:29811	275 population served	2012
Marshall Co SD 2HW:30073	275 population served	2012
GREENCASTLE WWTPHW:32238	275 population served	2012
HINSDALE WWTPHW:32596	275 population served	2012
UEHLING WWTPHW:32816	275 population served	2012
HALLAM WWTPHW:32839	275 population served	2012
ASHTON WWTPHW:32850	275 population served	2012
ULYSSES WWTPHW:33062	275 population served	2012
DRAKE LAGOONHW:34561	275 population served	2012
Mount Eaton WWTP and Sewer SystemHW:34830	275 population served	2012
MILLADORE STPHW:39329	275 population served	2012
NICHOLS WWTPHW:39359	275 population served	2012
Middle River H and R Facility STPHW:39640	275 population served	2012
BENTLEY WWTPHW:29230	274 population served	2012
WASHINGTON STATE PARKHW:32261	274 population served	2012
BLUEJACKET WWTHW:35769	274 population served	2012
Widener WWTPHW:25606	273 population served	2012
Verona WastewaterHW:27800	273 population served	2012
Perrytown WWTPHW:25569	272 population served	2012
Hickory Ridge WWTPHW:25616	272 population served	2012
Bryant WWTPHW:28391	272 population served	2012
ARTHUR STLHW:28490	272 population served	2012
COLESBURG SE STLHW:28583	272 population served	2012
RHODES STLHW:28996	272 population served	2012
ROWLEY STLHW:29012	272 population served	2012
LA MOTTE STPHW:29197	272 population served	2012
GENESEO WWTPHW:29443	272 population served	2012
BURR OAK WWTPHW:29449	272 population served	2012
LEBANON WWTPHW:29684	272 population served	2012
SALINE STPHW:30192	272 population served	2012
CLIMAX WWTPHW:31354	272 population served	2012
GOTEBO WWTHW:35860	272 population served	2012
STRAUSSTOWN BORO STPHW:36312	272 population served	2012
LAUREL STLHW:28799	271 population served	2012
MCFARLAND WWTPHW:29376	271 population served	2012
Whispering Pines WWTPHW:30367	271 population served	2012
WHEELING WWTPHW:32034	271 population served	2012
CLARKSDALE WWTPHW:32156	271 population served	2012
CENTERVILLE WWTFHW:32431	271 population served	2012
Northumberland Village WWTFHW:33168	271 population served	2012
Rincon Village ofHW:33517	271 population served	2012
BEAVER CO 1 TURPIN WWTHW:35724	271 population served	2012
FREEDOM WWTHW:36020	271 population served	2012
POTTER STPHW:39253	271 population served	2012
WILSONVILLE WWTPHW:25115	270 population served	2012
MAPLESVILLE WWTPHW:25194	270 population served	2012
Perry WWTPHW:25610	270 population served	2012
LOCKRIDGE WWTPHW:28822	270 population served	2012
FALKNER POTWHW:31671	270 population served	2012
WALKER WWTPHW:32135	270 population served	2012
GRESHAM WWTPHW:32834	270 population served	2012
STAPLETON WWTPHW:33040	270 population served	2012
TALALA WWTHW:35975	270 population served	2012
MITCHELL STPHW:36151	270 population served	2012
RUFUS STPHW:36179	270 population served	2012
HUSTON TWP JULIAN STPHW:36978	270 population served	2012
Cranfills Gap WWTPHW:37810	270 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.