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
BROWNS VALLEY STPHW:31336	569 population served	2012
HARDIN WWTPHW:32017	569 population served	2012
WALDRON STPHW:31166	568 population served	2012
HIGBEE WWTPHW:31999	568 population served	2012
MORRISVILLE WWTPHW:32416	568 population served	2012
Lowell WWTP and Sewer SystemHW:35234	568 population served	2012
SOUTH WAYNE STPHW:39453	568 population served	2012
STETSONVILLE STPHW:39461	568 population served	2012
AINSWORTH WWTPHW:28464	567 population served	2012
BLUE HILL WWTPHW:30460	567 population served	2012
MADISON WWTPHW:31803	567 population served	2012
FCPWSD1 Krakow Area LagHW:32055	567 population served	2012
MCCALMONT TWP ANITA STPHW:36930	567 population served	2012
Taylor WWTPHW:25521	566 population served	2012
CASNOVIA WWSLHW:30908	566 population served	2012
GALIEN WWTPHW:31038	566 population served	2012
HOPKINS STPHW:31080	566 population served	2012
Leeton WWTPHW:31834	566 population served	2012
PORTER PWA WWTHW:36007	566 population served	2012
KINGMAN WWTPHW:28248	565 population served	2012
RUSSELL WWTPHW:29015	565 population served	2012
Indian Lake T STP and On Site SysHW:33806	565 population served	2012
CLAREMONT MCLIN WWTPHW:34178	565 population served	2012
Coulee City STPHW:38697	565 population served	2012
GARFIELD BAY SEWER SYSTEMHW:27404	564 population served	2012
MINDEN WASTE STAB LAGOONHW:28880	564 population served	2012
BURDEN WWTPHW:29232	564 population served	2012
COOK MUN WWTFHW:31238	564 population served	2012
ARCOLA POTWHW:31696	564 population served	2012
FIRTH WWTPHW:32809	564 population served	2012
Saint Clairsville West WWTPHW:35389	564 population served	2012
DEPEW WWTHW:35691	564 population served	2012
BOKCHITO WWTHW:35737	564 population served	2012
RAMONA WWTHW:36010	564 population served	2012
WEST UNION WWTPHW:38826	564 population served	2012
FAIRCHILD STPHW:39213	564 population served	2012
GLASCO WWTPHW:29679	563 population served	2012
SACRAMENTO STPHW:29889	563 population served	2012
BANCROFT WWTPHW:32663	563 population served	2012
EDGELEY LAGOONHW:34485	563 population served	2012
H A C T WWTPHW:25773	562 population served	2012
Paradise ValleyHW:31896	562 population served	2012
South Dayton V WWTPHW:34066	562 population served	2012
NORTH LAKE POYGAN SD STPHW:39616	562 population served	2012
Stallion Springs CSD WWTFHW:26162	561 population served	2012
POPLAR STPHW:39394	561 population served	2012
ALAPAHA WTFHW:27138	560 population served	2012
CALUMET WWTHW:35643	560 population served	2012
LEHIGH TWP PENNSVILLE STPHW:36474	560 population served	2012
Dell City WWTPHW:37614	560 population served	2012
LIND S_T FACILITYHW:38719	560 population served	2012
PRICHARD WWTPHW:39025	560 population served	2012
Lyons WWTP and Sewer SystemHW:35241	559 population served	2012
Strong WWTPHW:25598	558 population served	2012
ELLISPORT BAY S_T FACILITYHW:27510	558 population served	2012
PROTECTION WWTPHW:29341	558 population served	2012
WAVERLY WWTPHW:29513	558 population served	2012
Humphrey WWTPHW:25451	557 population served	2012
AILEY WPCPHW:27136	557 population served	2012
SCRANTON WWTPHW:29028	557 population served	2012
CHATHAM PONDHW:30262	557 population served	2012
FAIRFIELD WWTPHW:32799	557 population served	2012
DOVER S_T FACILITYHW:27533	556 population served	2012
Worton_Butlertown STPHW:30604	556 population served	2012
GLEN ALLAN UTILITY DISTRICTHW:31694	556 population served	2012
Willshire WWTP and Sewer SystemHW:35511	556 population served	2012
CROSBY POTWHW:31440	555 population served	2012
ALBA WWTPHW:32010	555 population served	2012
EWING WWTPHW:32981	555 population served	2012
ARKANSAW SD 1 STPHW:39621	555 population served	2012
IDEAL WPCPHW:27229	554 population served	2012
ZEARING STLHW:29153	554 population served	2012
MULLIKEN WWTPHW:30829	554 population served	2012
CONNOQUENESSING BORO STPHW:36822	554 population served	2012
HUMESTON LGNHW:28754	553 population served	2012
SILVER CREEK WWTPHW:33032	553 population served	2012
COVINGTON WWTHW:35600	553 population served	2012
OZAWKIE WWTPHW:29390	552 population served	2012
Ashtabula Co Ashcraft WWTPHW:34850	552 population served	2012
WEST ALEXANDER STPHW:36766	552 population served	2012
BIG PINEY LAGOONHW:39663	552 population served	2012
WEIPPE S_T SystemHW:27418	551 population served	2012
HILLSBORO WWTPHW:28246	551 population served	2012
PLEASANT PT WWTFHW:30511	551 population served	2012
Cherry Creek V WWTPHW:34069	551 population served	2012
Russia WWTP and Sewer SystemHW:34865	551 population served	2012
LEROY KEKOSKEE WWTPHW:39569	551 population served	2012
LA BARGE LAGOONHW:39699	551 population served	2012
ECLECTIC LAGOON and SPRAYFIELDHW:25019	550 population served	2012
HAYNEVILLE HCR LAGOONHW:25175	550 population served	2012
Wilmot WWTPHW:25478	550 population served	2012
De Beque WWTPHW:26378	550 population served	2012
COOLIDGE LASHW:27174	550 population served	2012
Spoon Valley Lake Sanitary DistrictHW:27842	550 population served	2012
MOORELAND WWTPHW:28266	550 population served	2012
MARTINHW:30011	550 population served	2012
Friendsville WWTPHW:30602	550 population served	2012
Mill Bottom WWTSHW:30689	550 population served	2012
COVERT STPHW:31048	550 population served	2012
ULEN WASTEWATER TREAT PLTHW:31231	550 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.