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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
PLAINFIELD VILLAGE WPCFHW:265853,641 population served2012
RIDGEFIELD WPCFHW:265913,641 population served2012
WATERLOO WWTPHW:395703,640 population served2012
WALTONHW:298583,635 population served2012
Penns Grove Borough SA CS_Septics_STPHW:333363,633 population served2012
DELL RAPIDS WWTPHW:372853,633 population served2012
EAST CHINA REG CSHW:309303,630 population served2012
Ellenville V WWTPHW:336703,630 population served2012
PAWHUSKA WWTHW:356863,629 population served2012
BUELLTON WWTFHW:258933,628 population served2012
Crane WWTPHW:375973,628 population served2012
Chelan City of POTWHW:386923,627 population served2012
WHEATLAND LAGOONHW:397103,627 population served2012
Montgomery Co SD1 STPHW:337263,626 population served2012
Whispering Palms WPCFHW:262473,624 population served2012
UNION CITY WWTPHW:283523,622 population served2012
BRADLEY PSD WWTPHW:389973,622 population served2012
OSCEOLA WWTPHW:393723,621 population served2012
STANLEY WWTPHW:394593,620 population served2012
GOTHENBURG WWTPHW:328273,619 population served2012
Waldron WWTPHW:255833,618 population served2012
Bolton T STP and On SitesHW:338123,617 population served2012
PEN ARGYL STPHW:363833,615 population served2012
PENNINGTON GAP STPHW:384613,614 population served2012
Cisco WWTPHW:377693,613 population served2012
BELLEVIEW STPHW:268053,612 population served2012
Town of RidgecrestHW:303473,612 population served2012
MARMET WWTPHW:388843,612 population served2012
UPLAND WWTPHW:282563,609 population served2012
MONTICELLO WWTPHW:288893,607 population served2012
Heritage Ranch Sewer Treatm PlantHW:259013,600 population served2012
WALSENBURG STPHW:262893,600 population served2012
WARM SPRINGS WPCPHW:273113,600 population served2012
Hamilton Lake CD WWTPHW:283333,600 population served2012
HIAWATHA SOUTH WWTPHW:295323,600 population served2012
Moapa Valley WRCHW:331163,600 population served2012
Brookshire WWTPHW:380303,600 population served2012
Morrisville V STPHW:339303,598 population served2012
Saint Paris WWTP and Sewer SystemHW:353923,598 population served2012
HEBRON WWTPHW:280313,596 population served2012
Paulding WWTP and Sewer SystemHW:353363,595 population served2012
MIFFLINBURG WWTFHW:366283,594 population served2012
Kingman Downtown WWTFHW:253453,590 population served2012
HOLLANDALE POTWHW:315053,576 population served2012
Jefferson WWTP and Sewer SystemHW:351833,572 population served2012
STANLEY SEWER ASSOC INCHW:274873,569 population served2012
GOODING STPHW:274633,567 population served2012
ROMNEY WWTPHW:388513,567 population served2012
LEROY SEWAGE TREATMENT PLHW:277723,566 population served2012
MORRISVILLE VIL WPCFHW:382543,565 population served2012
MOUNT PLEASANT STP EASTHW:289003,563 population served2012
SHOAL CREEK WPC PLANTHW:270133,562 population served2012
WEWOKA WWTHW:359823,562 population served2012
LA FAYETTE MILL CREEK WWTPHW:250573,560 population served2012
WINNECONNE WWTPHW:395223,556 population served2012
Stone County Utility Authority Wiggins Regional WWTFHW:316563,555 population served2012
BALDWIN STPHW:390903,555 population served2012
WELLSBORO STPHW:364603,553 population served2012
GRATTAN STPHW:308963,551 population served2012
Hohenwald WWTPHW:374053,551 population served2012
GROVELAND WWTFHW:260673,550 population served2012
OSAGE WWTPHW:289413,550 population served2012
Gosnell WWTPHW:256813,548 population served2012
FORSYTH SOUTH WPCPHW:272043,545 population served2012
LONG PRAIRIE STPHW:312473,542 population served2012
TONOPAH ReuseHW:331333,542 population served2012
Florence NFIDHW:253733,540 population served2012
JOHNSTON CITY STPHW:279673,540 population served2012
FORT KENT WWTFHW:304823,540 population served2012
Woodridge V Woodridge STPHW:336693,540 population served2012
Clifton WWTPHW:377703,540 population served2012
ELMA STPHW:385743,540 population served2012
EAGLE RIVER STPHW:391933,540 population served2012
MANISTIQUE WWTPHW:311093,535 population served2012
Paris WWTPHW:256683,532 population served2012
NEWCASTLE LAGOONHW:396543,532 population served2012
WOODSTOCK WPCFHW:273213,530 population served2012
ST CLAIR STPHW:363023,524 population served2012
MARYSVILLE WWTPHW:293123,521 population served2012
GIBSON CITY STPHW:278663,520 population served2012
HARDIN WWT FACILITYHW:324823,520 population served2012
HOLTS SUMMITT WWTPHW:317053,518 population served2012
WESTTOWN TWP STPHW:362723,518 population served2012
COLON LAGOONHW:310643,513 population served2012
Scottsville V STPHW:339883,513 population served2012
PELHAM WPCPHW:272723,512 population served2012
SUQUAMISH STPHW:387513,510 population served2012
UMATAC MERIZO WWTFHW:397443,508 population served2012
Seneca Co SD 2 Five Points WWTPHW:340383,506 population served2012
BEDFORD BORO STPHW:364953,505 population served2012
HODGENVILLEHW:299833,504 population served2012
BOYNE CITY STPHW:311053,503 population served2012
LUDLOW WWTFHW:382473,503 population served2012
OAK HILL ROUTE 61 WWTPHW:388333,502 population served2012
EVERGREEN LAGOONHW:251603,500 population served2012
HEBER WWTFHW:261913,500 population served2012
WEST MONTROSE WWTPHW:262753,500 population served2012
YUMA WWTPHW:262793,500 population served2012
Morrison Creek MetroHW:263223,500 population served2012
Morrison Creek Metropolitain WSDHW:264523,500 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.