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
POOLESVILLE STPHW:30675	3,800 population served	2012
Orange Dept of Public WorksHW:30774	3,800 population served	2012
LOUISVILLE POTW EASTHW:31528	3,800 population served	2012
WARSAW WWTPHW:34214	3,800 population served	2012
BRANCH TWP STPHW:37027	3,800 population served	2012
NINETY SIX STPHW:37123	3,800 population served	2008
WHITEHALL WWTPHW:39514	3,793 population served	2012
West Union WWTP and Sewer SystemHW:35505	3,792 population served	2012
SUMMERSVILLE WWTPHW:38956	3,791 population served	2012
HOMER WWTPHW:30233	3,788 population served	2012
WEST POINT SEWERAGE SYSHW:38506	3,785 population served	2012
TOMAHAWK WWTPHW:39480	3,778 population served	2012
MORGANFIELDHW:30017	3,777 population served	2012
CENTRALIA WWTPHW:31921	3,777 population served	2012
Allamuchy Township MUA CS_Septic_STPHW:33388	3,774 population served	2012
Jellico Wastewater SystemHW:37414	3,771 population served	2012
TUNKHANNOCK BORO MUN AUTHHW:36422	3,770 population served	2012
PELL CITY DYE CREEK WWTPHW:25205	3,767 population served	2012
ESSEXVILLE STPHW:30996	3,766 population served	2012
WOODBRIDGE WWTFHW:26070	3,765 population served	2012
TIPTON WWTPHW:32309	3,761 population served	2012
Yellow Springs WWTP and Sewer SystemHW:35524	3,761 population served	2012
Alden V WWTPHW:34081	3,755 population served	2012
CULVER WWTPHW:28076	3,752 population served	2012
UNION SPRINGS SPRAY FIELDHW:25223	3,750 population served	2012
SAN SIMEON ACRES WWTFHW:25904	3,750 population served	2012
Players Club WWTPHW:26875	3,750 population served	2012
MULBERRY STPHW:26965	3,750 population served	2012
ALBANY WWTPHW:29907	3,750 population served	2012
OMRO STPHW:39366	3,745 population served	2012
PITTSBORO WWTPHW:34181	3,743 population served	2012
DEQUINCY SEWER SYSTEMHW:30126	3,742 population served	2012
Hope Pate Creek WWTPHW:25568	3,739 population served	2012
PLAINFIELD NORTH WPCFHW:26584	3,738 population served	2012
Jennings Northwest Regional UtilityHW:27977	3,738 population served	2012
QUINCY INDUSTRIAL STPHW:38645	3,738 population served	2012
ELBA LAGOONHW:25157	3,737 population served	2012
NEWPORT WWTPHW:34170	3,735 population served	2012
LYONS WWTPHW:29263	3,733 population served	2012
MAMOU STPHW:30249	3,733 population served	2012
ONEILL WWTPHW:32968	3,733 population served	2012
BUFFALO TWP MUN AUTHHW:36826	3,731 population served	2012
AUMSVILLE STPHW:36041	3,730 population served	2012
HORICON WWTPHW:39260	3,729 population served	2012
Littleton WWTFHW:33181	3,726 population served	2012
Oneida WWTPHW:37482	3,726 population served	2012
WOODRUFF_ENOREE RIVER WWTPHW:37146	3,725 population served	2008
Benson WWTFHW:25274	3,722 population served	2012
SKIATOOK HOMINY CREEK WWTHW:35680	3,720 population served	2012
CHIPLEY STPHW:26979	3,719 population served	2012
EAGLE GROVE WWTPHW:28645	3,712 population served	2012
DURAND WWTFHW:30842	3,712 population served	2012
Mt Shasta WWTFHW:26065	3,703 population served	2012
TOWN OF LAMAR WWTPHW:37101	3,703 population served	2008
SMITHTON WWTPHW:27636	3,700 population served	2012
KNOX WWTPHW:28125	3,700 population served	2012
Paducah McCracken Co JSA ReidlandHW:29906	3,700 population served	2012
Byesville John R Smalley WWTP and Sewer SystemHW:35014	3,700 population served	2012
MT ANGEL STPHW:36045	3,700 population served	2012
Gruene WWTPHW:38056	3,700 population served	2012
NEWTON POTWHW:31558	3,699 population served	2012
Raritan Township MUA Flemington WWTF STPHW:33305	3,699 population served	2012
RED BUD STPHW:27943	3,698 population served	2012
MANCHESTERHW:30009	3,698 population served	2012
RAYVILLE STPHW:30187	3,695 population served	2012
HUDSON WWTPHW:37978	3,694 population served	2012
Georgetown WWTP and Sewer SystemHW:35143	3,691 population served	2012
QUINCY TREATMENT PLANTHW:26100	3,688 population served	2012
MORGAN CITYHW:38121	3,687 population served	2012
Ozark WWTPHW:25577	3,684 population served	2012
CLAYWOOD PARK PSD NEWARK WWTPHW:39037	3,684 population served	2012
ADEL WWTPHW:28461	3,682 population served	2012
GAYLORD SEWAGE LAGOONSHW:31107	3,681 population served	2012
WAHOO WWTPHW:32728	3,681 population served	2012
BALDWYN POTWHW:31386	3,677 population served	2012
LAUREL STPHW:26626	3,676 population served	2012
ALMONT WWTPHW:30913	3,675 population served	2012
Waterville Valley WWTFHW:33183	3,675 population served	2012
WARRENTON WWTPHW:34420	3,675 population served	2012
Shadyside WWTP and Sewer SystemHW:35409	3,675 population served	2012
DEER PARK POTWHW:38702	3,675 population served	2012
TWO HARBORS WWTPHW:31244	3,667 population served	2012
RAYMOND STPHW:38739	3,664 population served	2012
HIDDEN VALLEY LAKE WWTFHW:26119	3,660 population served	2012
NEW HAMPTON WWTPHW:28914	3,660 population served	2012
WEST POINT WWTPHW:33081	3,660 population served	2012
Village of Bosque FarmsHW:33496	3,660 population served	2012
FITZGERALD CS NO 1HW:27200	3,656 population served	2012
BUCKSPORT WWTPHW:30412	3,656 population served	2012
CHATTAHOOCHEE STPHW:26915	3,652 population served	2012
Lowville V STPHW:33860	3,652 population served	2012
PILOT POINT STPHW:37835	3,652 population served	2012
DEEP CREEK LAKE WWTPHW:30595	3,651 population served	2012
Wawarsing T Napanoch STPHW:33686	3,650 population served	2012
Hicksville WWTP and Sewer SystemHW:34951	3,649 population served	2012
Red Bay WWTPHW:25209	3,648 population served	2012
Montgomery Township Pike Brook CS_STPHW:33313	3,648 population served	2012
MORA STPHW:31339	3,647 population served	2012
WATER VALLEY POTWHW:31645	3,645 population served	2012
LINCOLN WWTFHW:30430	3,643 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.