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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
GADSDEN WEST WWTPHW:2503122,573 population served2012
FRWRD West STPHW:2774722,517 population served2012
PLEASANT HILLS STPHW:3680022,511 population served2012
DUNCAN PUA WWTHW:3554722,505 population served2012
LIBERTYVILLE STPHW:2772522,503 population served2012
APOPKA STPHW:2667222,500 population served2012
Greenwood Lakes STPHW:2667522,500 population served2012
Fiesta Village WWTPHW:2679122,500 population served2012
WOODBURN POTWHW:3604922,500 population served2012
JAMES ISLAND WW SYSTEMHW:3722922,500 population served2008
Lebanon WWTPHW:3743122,500 population served2012
Lebanon Regional WWTP and SewersHW:3521222,492 population served2012
San Benito WWTPHW:3762322,480 population served2012
NEWBURGH WWTPHW:2811022,479 population served2012
EAST PENNSBORO SOUTH STPHW:3653022,459 population served2012
WESTMINSTER WWTPHW:3054022,440 population served2012
NEW SMYRNA BEACH STPHW:2689122,400 population served2012
Punta Gorda WWTPHW:2674322,346 population served2012
LOWER CREEK WWTPHW:3416222,344 population served2012
BELTON WWTPHW:3190722,316 population served2012
FREDERICKSBURG STPHW:3839922,313 population served2012
MUD CR WPCPHW:2711722,307 population served2012
NUTBUSH CREEK WWTPHW:3441122,301 population served2012
ST ANDREWS STPHW:2672422,284 population served2012
CARLISLE BORO STPHW:3647722,274 population served2012
SALT CREEK SD WWTFHW:2760622,253 population served2012
STUART STPHW:2695222,250 population served2012
Gardner Dept of Public WorksHW:3073522,244 population served2012
Marion_South Main StreetHW:3716022,188 population served2008
Westchester Co Blind Brook SD STPHW:3369122,176 population served2012
Franklin Regional WWTPHW:3502422,175 population served2012
YUKON STPHW:3564122,150 population served2012
CLARKSDALE POTWHW:3142222,145 population served2012
WILSONVILLE STPHW:3603322,111 population served2012
WHITEWATER STPHW:3951722,110 population served2012
OCONOMOWOC WWTPHW:3936322,109 population served2012
TARPON SPRINGS STPHW:2671222,105 population served2012
LAPORTE WWTPHW:2814922,086 population served2012
CNW REGIONAL WWTP and INTERCEPTOR SYSHW:3852022,071 population served2012
SOUTH MILWAUKEE STPHW:3945222,033 population served2012
Mason WWTP and Sewer SystemHW:3526022,016 population served2012
MACOMB SEWAGE TREAT PLANTHW:2755522,004 population served2012
PIEDMONT WTPHW:3723022,000 population served2008
Weslaco WWTPHW:3763622,000 population served2012
FMCHW:3851722,000 population served2012
SOUTH PORTLAND STPHW:3039021,953 population served2012
Oxford WWTP and Sewer SystemHW:3533221,943 population served2012
LINCOLN SEWERAGE SYSTEMHW:2771721,920 population served2012
ATASCADERO WWTFHW:2588721,915 population served2012
Winslow Township Sicklerville STP_CS_SepticsHW:3333321,900 population served2012
SAPULPA WWTHW:3569821,897 population served2012
Niceville Valparaiso Regional WWTFHW:2683521,893 population served2012
RUSTON NORTH PLANTHW:3019021,859 population served2012
CHEYENNE CROWCREEK WWTPHW:3964921,813 population served2012
EXETER TWP_BERKS COUNTY AUTHHW:3631121,812 population served2012
Chillicothe WWTP and Sewer SystemHW:3503321,796 population served2012
ERIE SWRFHW:2633921,768 population served2012
Sidney WWTP and Sewer SystemHW:3541321,744 population served2012
Cortland C WWTPHW:3392321,743 population served2012
LEXINGTON WWTPHW:3420721,738 population served2012
GALLUP STPHW:3341621,734 population served2012
Cooper Creek WWTPHW:3211921,720 population served2012
Red Oak Regional WWTPHW:3756721,700 population served2012
FRANKLIN CITY STPHW:3686421,634 population served2012
VERO BEACH STPHW:2677221,625 population served2012
Wesley Center subregional WWTFHW:2683921,600 population served2012
MON VALLEY STPHW:3676021,600 population served2012
HCUA Gulfport POTWHW:3149121,599 population served2012
Peachtree City Line Creek WPCPHW:2727021,563 population served2012
LUMBERTON WWTPHW:3436221,520 population served2012
SHAWNEE PWA WWT SOUTHHW:3555621,519 population served2012
Mountain Creek Regional WWTPHW:3756921,450 population served2012
Hackettstown Town MUA CS_Septics_STPHW:3338221,429 population served2012
EAGLE MOUNTAINHW:3821821,415 population served2012
PCRWRD Green Valley WRFHW:2535421,391 population served2012
Piqua WWTP and Sewer SystemHW:3535021,373 population served2012
Roxbury Township Ajax Terrace STP_CSHW:3330021,362 population served2012
Ukiah WWTFHW:2582421,353 population served2012
AUBURN NORTHSIDE WWTPHW:2498721,352 population served2012
Athens WWTP and Sewer SystemHW:3493121,342 population served2012
HAMBY CK WWTP THOMASVILLEHW:3420821,282 population served2012
OAKDALE WWTFHW:2597021,274 population served2012
BEAVER FALLS CITY STPHW:3672721,262 population served2012
NEW CASTLE WWTPHW:2815421,254 population served2012
Ashland WWTP and Sewer SystemHW:3490821,249 population served2012
Erie Co SD6 Lackawanna WWTPHW:3408721,242 population served2012
Jefferson Township CS_STPHW:3326921,208 population served2012
REEDLEY WWTPHW:2610121,206 population served2012
Douglas WWTFHW:2527621,194 population served2012
MILLBRAE MADRONE WWTFHW:2585021,175 population served2012
Yuma Desert Dunes WRFHW:2539521,153 population served2012
MSD Muddy Creek Drainage BasinHW:3516521,148 population served2012
WCRSA_GILDER CREEKHW:3724021,137 population served2008
JACKSON LAGOONHW:3972221,134 population served2012
Perrysburg WWTP and Sewer SystemHW:3534121,100 population served2012
DINUBA WWTFHW:2607321,087 population served2012
DEERFIELD STP and COLL SYSTEMHW:2773021,078 population served2012
MEADVILLE STPHW:3690021,067 population served2012
DAVIS CAMPUS WWTFHW:2607221,006 population served2012
Montrose City ofHW:2635921,000 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.