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
MEADVILLE POTWHW:31541	466 population served	2012
MCCURTAIN WWTHW:35828	466 population served	2012
GLEN CAMPBELL BORO STPHW:36777	466 population served	2012
ONEIDA NORTH LAGOONHW:27915	465 population served	2012
BIRDSEYE WWTPHW:28236	465 population served	2012
LAMONT WWTHW:35812	465 population served	2012
WAPANUCKA PWA WWTHW:35851	465 population served	2012
STONEWALL WWTHW:35958	465 population served	2012
RICHMOND WWTPHW:29506	464 population served	2012
EWING WWTPHW:31840	464 population served	2012
RIDGEWAY WWTPHW:32289	464 population served	2012
Beaver WWTP and Collection SystemHW:34981	464 population served	2012
CLEVELANDHW:38191	464 population served	2012
Florissant WSDHW:26324	463 population served	2012
KENSINGTON WWTPHW:29682	463 population served	2012
ALTAMONT WINSTON WWTPHW:32201	463 population served	2012
NEBO STPHW:27962	462 population served	2012
ASHTON WWTPHW:28492	462 population served	2012
MEADVILLE WWTPHW:31832	462 population served	2012
PADEN UA WWTHW:35934	461 population served	2012
NEOLA WATER and SEWERHW:38190	461 population served	2012
COBB STPHW:39161	461 population served	2012
MIDWAY LAND APPLICATIONHW:25195	460 population served	2012
South 641 WD HAZELHW:29904	460 population served	2012
ALPENA STPHW:37308	460 population served	2012
MCGAHEYSVILLE STP andCSHW:38521	460 population served	2012
ENDEAVOR WWTPHW:39209	460 population served	2012
TEN SLEEP LAGOONHW:39720	460 population served	2012
ARLINGTON WWTPHW:29227	459 population served	2012
BEULAH POTWHW:31396	459 population served	2012
WATERLOO WWTPHW:33075	459 population served	2012
Deferiet V STPHW:33845	459 population served	2012
ELK PARK WWTPHW:34133	459 population served	2012
RAVIA WWTHW:35610	459 population served	2012
CORSICA BORO STPHW:36915	459 population served	2012
Lafe WWTPHW:25563	458 population served	2012
DAWSONVILLE FLAT CREEK LASHW:27183	458 population served	2012
QULIN WWTPHW:32080	458 population served	2012
RALSTON WWTHW:35945	458 population served	2012
HUDSON LAGOONHW:39687	458 population served	2012
WOODBINE WPCPHW:27096	457 population served	2012
GERALD EAST LAGOONHW:31872	457 population served	2012
ALMOND WWTPHW:39071	457 population served	2012
EASTMAN WWTPHW:39195	457 population served	2012
Sulphur Rock WWTPHW:25633	456 population served	2012
Reyno WWTPHW:25723	456 population served	2012
NEW MARKET WWTPHW:28918	456 population served	2012
BROWNSVILLE WWTPHW:31334	456 population served	2012
NOVINGER WWTPHW:32273	456 population served	2012
BUCKLIN EAST WWTPHW:32356	456 population served	2012
DELAWARE WWTHW:35926	456 population served	2012
WALDO WWTPHW:39494	456 population served	2012
THEBES STPHW:27550	455 population served	2012
PLAINFIELD STLHW:28965	455 population served	2012
SOMESVILLE STPHW:30439	455 population served	2012
Fredericksburg WWTP and Sewer SystemHW:34832	455 population served	2012
Lafayette WWTP and Sewer SystemHW:35196	455 population served	2012
OTTERVILLE WWTPHW:32448	454 population served	2012
BERTHOLD LAGOONHW:34531	454 population served	2012
PIGEON FALLS WWTPHW:39386	454 population served	2012
LOHRVILLE WWTPHW:28824	453 population served	2012
SALEM WWTPHW:29024	453 population served	2012
HOLYROOD WWTPHW:29256	453 population served	2012
MILTONA WWTPHW:31298	453 population served	2012
AUGUSTA WWTPHW:31899	453 population served	2012
Senecaville WWTP and Sewer SystemHW:35407	453 population served	2012
Stark Co Molly Stark Hospital WWTPHW:35504	453 population served	2012
SPRINGFIELD PLANT 2HW:37087	453 population served	2008
JACKSONVILLE WPCFHW:38285	453 population served	2012
Patterson WWTPHW:25768	452 population served	2012
LEWIS WWTPHW:29721	452 population served	2012
DUSTIN PWA WWTHW:35832	452 population served	2012
ALBURNETT WWTPHW:28470	451 population served	2012
Salesville WWTPHW:25481	450 population served	2012
Amity WWTPHW:25502	450 population served	2012
VICTOR WWTPHW:26389	450 population served	2012
RIDGEFIELD RT7_35 WPCFHW:26592	450 population served	2012
Marco Shores Utilities WWTPHW:26758	450 population served	2012
CLAYPOOL WWTPHW:28295	450 population served	2012
Idaville WWTPHW:28425	450 population served	2012
South Central RSD North Park WWTPHW:28448	450 population served	2012
FT MADISON WESTERLY STLHW:28690	450 population served	2012
MORAN WWTPHW:29511	450 population served	2012
AL CO S D 1 WWTPHW:29591	450 population served	2012
LEWISTOWN PONDHW:30271	450 population served	2012
FLINTSTONE GILPIN WWTPHW:30563	450 population served	2012
TUNICA COUNTY UTIL DIST WHITE OAKHW:31692	450 population served	2012
TRAILS WEST SUBDHW:31944	450 population served	2012
FCPWSD 3 Red BarnHW:32064	450 population served	2012
HOT SPRINGS WWTFHW:32595	450 population served	2012
Edwards V STP and On SitesHW:33876	450 population served	2012
Gouverneur T STP and On SitesHW:33896	450 population served	2012
Gorham T STP and OnsitesHW:34034	450 population served	2012
Concord T WWTP and OnsitesHW:34114	450 population served	2012
GRASSY BRANCH WWTPHW:34410	450 population served	2012
Shelby Co Arrowhead Hills WWTPHW:34862	450 population served	2012
BOKOSHE PWA WWTHW:35623	450 population served	2012
ZAMBARANO HOSPITALHW:37070	450 population served	2012
Josephine WWTPHW:37825	450 population served	2012
Byers WWTPHW:37858	450 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.