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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
Osceola WWTPHW:255737,757 population served2012
E WINDSOR WAREHOUSE PTHW:265487,750 population served2012
Sawgrass WWTFHW:268727,750 population served2012
VCUD Deltona North RWRFHW:268947,750 population served2012
MASCOUTAH CITY OFHW:276397,750 population served2012
CHARLESTON WWTPHW:321077,747 population served2012
Owego T SD 2 WWTPHW:339607,747 population served2012
BALL STPHW:302937,743 population served2012
YORK WWTPHW:330897,740 population served2012
FOREST HILLS SOUTH FORK STPHW:366297,739 population served2012
FOX RIVER GROVE STPHW:277597,734 population served2012
KNOXVILLE WWTFHW:291797,731 population served2012
ALBERTVILLE STPHW:312847,729 population served2012
SIGNAL MOUNTAIN STPHW:375077,725 population served2012
GUN LAKE AREA STPHW:310577,723 population served2012
ORANGE COVE WWTFHW:259857,722 population served2012
NORTHEAST BORO STPHW:368847,714 population served2012
TITTABAWASSEE TWP STPHW:309937,706 population served2012
MOKENA STPHW:277097,700 population served2012
Helena_West Helena Helena WWTPHW:254437,692 population served2012
DUQUESNE STPHW:367677,690 population served2012
Burrillville Sewer CommissionHW:370547,684 population served2012
KEARNEY WWTPHW:318677,681 population served2012
Gatesville WWTPHW:377367,670 population served2012
WAGONER PWA WWTHW:360087,669 population served2012
BLACKWELL WWTHW:358527,668 population served2012
MYERSTOWN BOROHW:363987,668 population served2012
CLEMSON TOWN PLANTHW:371537,666 population served2008
Union_Meng Creek PlantHW:371667,655 population served2008
WESTVILLE BELGIUM STPHW:278777,650 population served2012
Licking Co Buckeye Lake SD 1HW:352197,649 population served2012
MARENGO STPHW:277697,637 population served2012
LBVSD MIDDLE BIG CREEK WWTPHW:317337,613 population served2012
HYRUMHW:381187,609 population served2012
Newton Town CS Septics_ STPHW:333897,604 population served2012
T OR C STPHW:334727,600 population served2012
RIDGELAND WWTPHW:371047,600 population served2008
CLINTON BRIARS POTWHW:314257,585 population served2012
Norwich C STPHW:339197,585 population served2012
BAINBRIDGE WPCPHW:271017,582 population served2012
LEWES STPHW:266317,580 population served2012
TITUSVILLE STPHW:369497,571 population served2012
JEFFERSON STPHW:392707,569 population served2012
CAMILLA LASHW:271567,562 population served2012
Hot Springs Village Mill CreekHW:254637,555 population served2012
PRINCETON STPHW:278057,555 population served2012
Albion V JtMun Ind WWTPHW:340027,555 population served2012
RICHFIELDHW:381597,551 population served2012
Gladewater WWTPHW:379227,548 population served2012
NEPTUNE BEACH STPHW:266607,537 population served2012
SWAINSBORO WPCPHW:272967,535 population served2012
QUONSET POINT WWTFHW:370717,532 population served2012
BUCK CO WandS AUTH HARVEY AVENUE STPHW:362197,529 population served2012
Hudson C Sewers and STPHW:337127,524 population served2012
PRESTONSBURGHW:300347,523 population served2012
Lower Jackson River RegionalHW:383067,522 population served2012
ANTIETAM VALLEY MUN AUTHHW:363587,517 population served2012
BONNER SPGS WWTPHW:293517,508 population served2012
AURORA WWTPHW:317647,508 population served2012
Savannah STPHW:375017,508 population served2012
SATSUMA WWTPHW:250967,500 population served2012
Sunrise Southwest WWTPHW:266497,500 population served2012
Oak Run WWTFHW:268137,500 population served2012
Key LargoHW:268237,500 population served2012
SEBRING STPHW:269297,500 population served2012
Mount Dora WWTF 2HW:269447,500 population served2012
ELEELE WWTFHW:273557,500 population served2012
NEW LENOX STP 2HW:276037,500 population served2012
WOOD DALE SOUTH STPHW:277157,500 population served2012
CENTRAL INDIANA COUNTY JSAHW:368407,500 population served2012
ABINGDON WWTP and Collection SystemHW:383717,500 population served2012
Whidbey NavalAir Station Oak HarborHW:386207,500 population served2012
Herkimer V WWTPHW:338337,498 population served2012
Van Buren North WWTPHW:255357,494 population served2012
NORTH HARNETT LILLINGTON REG WWTPHW:342617,493 population served2012
Saranac Lake V STPHW:338027,491 population served2012
LANDER LAGOONHW:396887,487 population served2012
CHURCH HILL STPHW:373447,484 population served2012
MOUNT VERNON WWTPHW:281017,478 population served2012
LIVINGSTON PARISH SD1and2 WWTPHW:302787,477 population served2012
COLUMBIA CO REED CRK WPCHW:271287,473 population served2012
SEDRO WOOLLEY TREATMENTHW:386497,473 population served2012
FONTANA WALWORTH WPCC WWTPHW:394957,471 population served2012
Northbridge Dept of Public WorksHW:307277,470 population served2012
BLAIR WWTPHW:326997,470 population served2012
IONE WWTFHW:260507,466 population served2012
LIVE OAK STPHW:268837,456 population served2012
Allen Co Shawnee 2 WWTPHW:347977,455 population served2012
HONESDALE STP Central WayneHW:364737,446 population served2012
OXFORD TULL C ALLEN WWTPHW:250807,442 population served2012
ROBESONIA WERNERSVILLE STPHW:363357,442 population served2012
HICKORY FLATS JONESVILLEHW:385287,434 population served2012
PAYETTE STPHW:274507,433 population served2012
PRAIRIE DU CHIEN WWTPHW:394027,433 population served2012
HAMLET WWTPHW:343597,430 population served2012
Page WWTFHW:252867,427 population served2012
ARCADIA STPHW:267657,427 population served2012
BERK CO PSSD BAKER HEIGHTS WWTPHW:387977,427 population served2012
OTHELLO SEWAGE LAGOONSHW:386297,420 population served2012
Logan WWTP and Sewer SystemHW:352247,415 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.