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
LOSTINE ON SITESHW:36143	304 population served	2012
LOGANVILLE STPHW:39299	304 population served	2012
SHARON SEWER SYSTEMHW:26595	303 population served	2012
ROCKDALE COSCOTT CREEKHW:27172	303 population served	2012
KENDRICK S_T FACILITYHW:27395	303 population served	2012
PLYMOUTH SD 1 STPHW:39604	303 population served	2012
Menifee WWTPHW:25613	302 population served	2012
North Middletown STPHW:29902	302 population served	2012
STOVER NORTH LAGOONHW:32331	302 population served	2012
Hammond V WWTPHW:33879	302 population served	2012
Hermon V STP and On SitesHW:33880	302 population served	2012
Donaldson WWTPHW:25570	301 population served	2012
OTIS WWTPHW:29728	301 population served	2012
BROOKLYN POTWHW:31675	301 population served	2012
HYANNIS WWTPHW:32874	301 population served	2012
WOLBACH WWTPHW:33088	301 population served	2012
ROSMAN WWTPHW:34402	301 population served	2012
REYNOLDS LAGOONHW:34665	301 population served	2012
SOUTH HEART LAGOONHW:34683	301 population served	2012
Summit Co zelray Park WWTP 48HW:34857	301 population served	2012
BRAGGS PWA WWTHW:35914	301 population served	2012
COLFAX PSDHW:38903	301 population served	2012
LA VALLE STPHW:39294	301 population served	2012
BURNS LAGOONHW:39696	301 population served	2012
AUKE BAY STPHW:25258	300 population served	2012
Valley Vista CollectionHW:25406	300 population served	2012
HOPLAND WWTFHW:25790	300 population served	2012
Sea Ranch WWTFHW:25827	300 population served	2012
ADIN WWTFHW:26110	300 population served	2012
RICHVALE WWTFHW:26139	300 population served	2012
CAMINO HGTS WWTF CSD 21HW:26153	300 population served	2012
Steamboat Lake WSDHW:26333	300 population served	2012
BAILEY WWTPHW:26391	300 population served	2012
E HADDAM WPCFHW:26546	300 population served	2012
HOSCHTON WPCPHW:27069	300 population served	2012
Monroe County RSDHW:28387	300 population served	2012
TWIN LAKES STPHW:29212	300 population served	2012
BUSHTON WWTPHW:29233	300 population served	2012
LAKE WAB I D WWTPHW:29411	300 population served	2012
MUNJOR I D WWTPHW:29662	300 population served	2012
RN CO S D 310 WWTP MINN SUBHW:29826	300 population served	2012
GRAND ISLE WWTFHW:30484	300 population served	2012
SINCLAIR WWTFHW:30518	300 population served	2012
Industrial Park WWTPHW:30681	300 population served	2012
SHAW WWTFHW:31957	300 population served	2012
MAITLAND WWTPHW:31971	300 population served	2012
LAKE OzARK SP BEACH 1HW:32333	300 population served	2012
HARRY S TRUMAN STATE PARKHW:32442	300 population served	2012
AUGUSTA W and S DistrictHW:32558	300 population served	2012
GABBS NORTH WWTPHW:33120	300 population served	2012
Schodack T S Landing Sewers_STPHW:33767	300 population served	2012
Hadley T STP and On Site SystemsHW:33808	300 population served	2012
Crown Point T STP and On Site SysHW:33827	300 population served	2012
Darien T WWTP and OnsitesHW:34030	300 population served	2012
Jasper T PropSTP and Onsites SysHW:34040	300 population served	2012
LANSING WWTPHW:34129	300 population served	2012
TUCKASEIGEE WWTP 3 CASHIERSHW:34277	300 population served	2012
HARWOOD LAGOONHW:34718	300 population served	2012
Holmes Co October Hills WWTP and SewersHW:34742	300 population served	2012
Shelby Co Fair Haven WWTPHW:34864	300 population served	2012
Geauga Co Parkman WWTPHW:35141	300 population served	2012
Summit Co Frasure Park Estates 46HW:35442	300 population served	2012
SOPER WWTHW:35608	300 population served	2012
ENID STATE SCHOOL WWTHW:35799	300 population served	2012
FOYIL WWTHW:35972	300 population served	2012
CLAY TWP SUPERVISORS HOPELAND STPHW:36387	300 population served	2012
GEORGETOWN AREA STPHW:36589	300 population served	2012
ADAMS TWP MINE 42 STPHW:36647	300 population served	2012
BURNSIDE BORO STPHW:36889	300 population served	2012
GIRARD TWP STPHW:36956	300 population served	2012
BUFFALO COMMUNITY WWTPHW:37334	300 population served	2012
Parrottsville STPHW:37495	300 population served	2012
Covington WWTPHW:37813	300 population served	2012
EXETER COMMUNITYHW:38323	300 population served	2012
SPERRYVILLE STPHW:38330	300 population served	2012
Naselle Youth Camp STFHW:38630	300 population served	2012
PAX WWTPHW:38835	300 population served	2012
COMA PSD HELEN WWTPHW:38992	300 population served	2012
CLARK CO HEALTH CC STPHW:39051	300 population served	2012
PORT WING WWTPHW:39399	300 population served	2012
AURORA SD 1 WWTPHW:39574	300 population served	2012
CHILI WWTPHW:39631	300 population served	2012
WESTSIDE STLHW:29206	299 population served	2012
DIGGINS WWTPHW:32405	299 population served	2012
THOMPSON BOROUGHHW:36441	299 population served	2012
SILVER LAKE TWP MA LAUREL LAKE STPHW:36442	299 population served	2012
CLARK WWTPHW:31843	298 population served	2012
DILLER WWTPHW:32776	298 population served	2012
LENAPAH PWA WWTHW:35927	298 population served	2012
LANGFORD STPHW:37306	298 population served	2012
SYLVIA WWTPHW:29293	297 population served	2012
BREWSTER WWTPHW:29742	297 population served	2012
GERALDINE TOWN OF WWTPHW:32504	297 population served	2012
ALEXANDRIA WWTPHW:32639	297 population served	2012
Wakefield Sanbornville WWTFHW:33238	297 population served	2012
Marengo WWTP and Sewer SystemHW:34735	297 population served	2012
HASKELL CO 2 KINTA WWTHW:35826	297 population served	2012
JACKSON CENTER STPHW:36996	297 population served	2012
SPANGLE S_T FACILITYHW:38658	297 population served	2012
FRIESLAND WWTPHW:39227	297 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.