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World wastewater treatment plant observatory · data as reported by each inventory

Wastewater treatment plants in the United States

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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

CompareNameNative sizeYear
Bath V WWTPHW:340115,574 population served2012
SHENANDOAH WWTPHW:290375,572 population served2012
NOBLE WWTHW:356385,570 population served2012
MONTGOMERY WWTPHW:388305,570 population served2012
BRASELTON LASHW:271475,565 population served2012
ADEL WPCP 1HW:271355,563 population served2012
SPARTA WASTEWATER TRMTHW:308985,556 population served2012
HUGO MUNICIPAL AUTHORITY WWTHW:357605,555 population served2012
RUPERT STPHW:274685,554 population served2012
PARKVILLE WWTPHW:318555,554 population served2012
Woodland Wastewater Treatment PlantHW:386815,550 population served2012
Gustine WWTFHW:261245,548 population served2012
HANOVER PARK WWTP NO1HW:277805,542 population served2012
Waterloo V STPHW:340105,541 population served2012
BLUEWELL PSD WWTPHW:389275,538 population served2012
STEPHAN D PURIFOY WPCPHW:272955,531 population served2012
MIDDLETON SEWAGE TREATMENT FCLTYHW:273895,524 population served2012
MAGEE POTWHW:315375,522 population served2012
POINT PLEASANT WWTPHW:389225,515 population served2012
BEAVER BORO STPHW:367985,514 population served2012
Fabens WWTPHW:376075,511 population served2012
Canal Fulton WWTP and Sewer SystemHW:350205,509 population served2012
WEISER STPHW:274555,507 population served2012
WAYNE WWTPHW:330795,505 population served2012
N AND S SHENANGO STPHW:369995,502 population served2012
ROCKWOOD WWTPHW:374965,502 population served2012
OPP WESTSIDE WWTPHW:250775,500 population served2012
Wickenburg WWTFHW:253335,500 population served2012
Bob Sykes Industrial Park WWTFHW:268315,500 population served2012
Hernando Airport Subregional WWTFHW:269965,500 population served2012
ALACHUA WWTPHW:270055,500 population served2012
Paulding County LASHW:272265,500 population served2012
SPRING VALLEY STPHW:278045,500 population served2012
BELGRADE LAGOONSHW:325345,500 population served2012
GORDONSVILLE STPHW:384515,500 population served2012
BIRCH BAY STPHW:387705,500 population served2012
THURMONT WWTPHW:305945,490 population served2012
PLAIN CITYHW:381355,476 population served2012
ULYSSES WWTPHW:293405,474 population served2012
DOUGLASVILLE NORTH WPCPHW:271905,466 population served2012
ARMADA WWTPHW:309545,463 population served2012
AMITY TWP BERKS STPHW:363345,456 population served2012
ALEXANDRIA BORO PORTER TWP JSAHW:366585,455 population served2012
JIM THORPE BOROHW:363995,450 population served2012
WHITEVILLE WWTPHW:341955,445 population served2012
STANWOOD S_T FACILITYHW:386605,445 population served2012
Concord Dept of Public WorksHW:307025,439 population served2012
Bisbee San Jose WWTFHW:252755,434 population served2012
WILLIAMSTOWN STPHW:299215,427 population served2012
CHERRYVILLE WWTPHW:342435,425 population served2012
RANDLEMAN WWTPHW:343555,425 population served2012
BARNWELL WWTPHW:371315,425 population served2008
ST CLAIR WWTPHW:318765,424 population served2012
Attica V WWTPHW:341085,422 population served2012
TROY SOUTHEAST WWTPHW:323055,420 population served2012
ZEELAND STPHW:309065,417 population served2012
Warwick V Sewers and WWTPHW:336335,412 population served2012
MILTON STPHW:393325,412 population served2012
COLERAINE BOVEY TACONITE WWTFHW:313035,411 population served2012
Coleman WWTPHW:381045,410 population served2012
Newton Falls WWTP and Sewer SystemHW:353145,402 population served2012
PORT GIBSON POTWHW:315805,401 population served2012
HAZELHURST WPCPHW:272235,400 population served2012
PRINCESS ANNE WWTPHW:306185,400 population served2012
Uxbridge Wastewater SystemHW:307825,400 population served2012
Strongsville C WWTP and SewersHW:354315,400 population served2012
La Feria WWTPHW:376205,400 population served2012
HOLSTON REGIONAL WWTP and COLL SYSHW:384665,393 population served2012
Helena_West Helena W Helena WWTPHW:254405,390 population served2012
NEPHIHW:381405,389 population served2012
Rancho Santa Fe WWTFHW:262455,388 population served2012
CRESSON BORO STPHW:365945,388 population served2012
QUITMANHW:272755,380 population served2012
BLACK RIVER FALLS STPHW:391105,378 population served2012
WATSEKA SEWAGE WORKSHW:275715,375 population served2012
Caldwell WWTP and Sewer SystemHW:347735,369 population served2012
MINERAL SPRINGS WPCPHW:271135,367 population served2012
San Diego MUD WWTPHW:376455,366 population served2012
MONTICELLO STP and COLLECTION SYSTEMHW:279415,365 population served2012
MANCHESTER LASHW:272505,361 population served2012
AVENAL WWTFHW:261115,360 population served2012
Tupper Lake V WWTPHW:338035,360 population served2012
GLENWOOD WWTPHW:287055,358 population served2012
Berryville WWTPHW:254975,356 population served2012
Hammonton Town CS_Septics_STPHW:333325,356 population served2012
ROSTRAVER TWP POLLOCK RUN STPHW:367385,354 population served2012
NORTH BRANCH FD1 WPCFHW:382945,340 population served2012
PAOLA WWTPHW:295015,339 population served2012
SHELBYVILLE STPHW:278745,329 population served2012
FRANKLIN WWTPHW:342995,329 population served2012
FREELAND BORO STPHW:364305,328 population served2012
PLAINS MARSHALL STPHW:384755,325 population served2012
MCCANDLESS TWP LONGVUE 1 STPHW:367015,324 population served2012
DEWITT WWTPHW:286245,322 population served2012
NAPPANEE WWTPHW:281695,320 population served2012
City of Pinckneyville STP 2HW:279035,316 population served2012
Toa Alta WWTPHW:397585,309 population served2012
DESOTO WWTPHW:293565,304 population served2012
NEW ROADS LAGOONHW:302925,303 population served2012
SUFFIELD WPCFHW:266075,300 population served2012

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.

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.