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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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All countries

17,009 inventory records · EPA Clean Watersheds Needs Survey 2022

Data years: 2022. The inventory date does not establish current operation.

States

17,009 results

CompareNameNative sizeYear
MORTON STPMorton0.62 MGD (million gallons per day)2022
FENNIMORE STPFennimore0.62 MGD (million gallons per day)2022
NEWHALL WWTPNewhall0.619 MGD (million gallons per day)2022
Fortson Creek WPCPElberton0.612 MGD (million gallons per day)2022
SULTAN WWTPSultan0.612 MGD (million gallons per day)2022
Kingman Downtown WWTFKingman0.61 MGD (million gallons per day)2022
MARIPOSA WWTFMariposa0.61 MGD (million gallons per day)2022
Darien WPCPDarien0.61 MGD (million gallons per day)2022
RED BUD STPRed Bud0.61 MGD (million gallons per day)2022
FRONTENAC WWTPFrontenac0.61 MGD (million gallons per day)2022
BAD AXE WWTPBad Axe0.61 MGD (million gallons per day)2022
Bonne Terre N.W. WWTPBonne Terre0.61 MGD (million gallons per day)2022
RED LODGE, CITY OF - Combined SewerRed Lodge0.61 MGD (million gallons per day)2022
MT ANGEL STPMount Angel0.61 MGD (million gallons per day)2022
MONTOURSVILLE STPMontoursville0.61 MGD (million gallons per day)2022
TRINITY STPTrinity0.61 MGD (million gallons per day)2022
LAWRENCEVILLE STPLawrenceville0.61 MGD (million gallons per day)2022
CONNELL STPConnell0.61 MGD (million gallons per day)2022
BLOOMER STPBloomer0.61 MGD (million gallons per day)2022
MOUNT HOREB STPMount Horeb0.61 MGD (million gallons per day)2022
BELLE PLAINE WWTPBelle Plaine0.609 MGD (million gallons per day)2022
KEOTA WWTPKeota0.608 MGD (million gallons per day)2022
TRAER WWTPTraer0.608 MGD (million gallons per day)2022
OSCEOLA WWTPArcadia0.606 MGD (million gallons per day)2022
WABASHA WWTPWabasha0.604 MGD (million gallons per day)2022
EPHRATA STPEphrata0.604 MGD (million gallons per day)2022
WARSAWWarsaw0.601 MGD (million gallons per day)2022
Southside WWTPGadsden0.6 MGD (million gallons per day)2022
BRUNDIDGE WWTPBrundidge0.6 MGD (million gallons per day)2022
ELBA LAGOONElba0.6 MGD (million gallons per day)2022
HEFLIN LAGOONHeflin0.6 MGD (million gallons per day)2022
VERNON YELLOW CREEK LAGOONVernon0.6 MGD (million gallons per day)2022
YORK LAGOONYork0.6 MGD (million gallons per day)2022
Girdwood WWTPGirdwood0.6 MGD (million gallons per day)2022
Unalaska WWTPUnalaska0.6 MGD (million gallons per day)2022
North Pole Aerated LagoonNorth Pole0.6 MGD (million gallons per day)2022
Pinewood Sanitary DistrictMunds Park0.6 MGD (million gallons per day)2022
Willcox WWTFWillcox0.6 MGD (million gallons per day)2022
Snowflake WWTFSnowflake0.6 MGD (million gallons per day)2022
Sherwood - South WWTPSherwood0.6 MGD (million gallons per day)2022
Eudora WWTPEudora0.6 MGD (million gallons per day)2022
McGehee WWTPMc Gehee0.6 MGD (million gallons per day)2022
Marianna - East WWTPMarianna0.6 MGD (million gallons per day)2022
Manila WWTPManila0.6 MGD (million gallons per day)2022
Murfreesboro WWTPMurfreesboro0.6 MGD (million gallons per day)2022
Weiner WWTPWeiner0.6 MGD (million gallons per day)2022
Haskell - North WWTPBenton0.6 MGD (million gallons per day)2022
Augusta WWTPAugusta0.6 MGD (million gallons per day)2022
HURON WWTFHuron0.6 MGD (million gallons per day)2022
ANGELS CAMP WWTFAngels Camp0.6 MGD (million gallons per day)2022
RUNNING SPRINGS WWTFRunning Springs0.6 MGD (million gallons per day)2022
Dominion Water and Sanitation DistrictLittleton0.6 MGD (million gallons per day)2022
St Mary's Glacier WSDIdaho Springs0.6 MGD (million gallons per day)2022
W GLENWOOD SPRINGS STPGlenwood Springs0.6 MGD (million gallons per day)2022
Southern Ute Indian Tribe(E)Ignacio0.6 MGD (million gallons per day)2022
Bayfield Town ofBayfield0.6 MGD (million gallons per day)2022
New Castle, Town ofNew Castle0.6 MGD (million gallons per day)2022
VC/Southeast WWTFOak Hill0.6 MGD (million gallons per day)2022
VC/Southwest WWTFDeltona0.6 MGD (million gallons per day)2022
Bunnell WWTPBunnell0.6 MGD (million gallons per day)2022
Douglasville North WPCPDouglasville0.6 MGD (million gallons per day)2022
Springfield WPCPRincon0.6 MGD (million gallons per day)2022
Tennille WPCPTennille0.6 MGD (million gallons per day)2022
S Frk Coeur D' Alene Rvr SD--MullanMullan0.6 MGD (million gallons per day)2022
NEW PLYMOUTH SEWAGE LAGOONNew Plymouth0.6 MGD (million gallons per day)2022
LENA WASTEWATER TREAT WKSLena0.6 MGD (million gallons per day)2022
DUPO SEWAGE WORKSDupo0.6 MGD (million gallons per day)2022
WASHINGTON STP 1Washington0.6 MGD (million gallons per day)2022
PECATONICA SEWAGE TREATMEPecatonica0.6 MGD (million gallons per day)2022
Davis Junction WWTPDavis Junction0.6 MGD (million gallons per day)2022
GEORGETOWN STPGeorgetown0.6 MGD (million gallons per day)2022
LEWISTOWN STPLewistown0.6 MGD (million gallons per day)2022
MORRISTOWN WWTPMorristown0.6 MGD (million gallons per day)2022
AVILLA WWTPAvilla0.6 MGD (million gallons per day)2022
NASHVILLE WWTPNashville0.6 MGD (million gallons per day)2022
FREMONT WWTPFremont0.6 MGD (million gallons per day)2022
WARREN WWTPWarren0.6 MGD (million gallons per day)2022
WESTVILLE WWTPWestville0.6 MGD (million gallons per day)2022
RISING SUN WWTPRising Sun0.6 MGD (million gallons per day)2022
PETERSBURG WWTPPetersburg0.6 MGD (million gallons per day)2022
BROOKSTON WWTPBrookston0.6 MGD (million gallons per day)2022
BUFFALO WWTPBuffalo0.6 MGD (million gallons per day)2022
CAMANCHE WWTPCamanche0.6 MGD (million gallons per day)2022
FAIRFAX WWTPFairfax0.6 MGD (million gallons per day)2022
HUDSON WWTPHudson0.6 MGD (million gallons per day)2022
MARYSVILLE WWTPMarysville0.6 MGD (million gallons per day)2022
LOUISBURG #2 (SOUTH) WWTPLouisburg0.6 MGD (million gallons per day)2022
BAXTER SPRINGS WWTPBaxter Springs0.6 MGD (million gallons per day)2022
BURLINGTON WWTPBurlington0.6 MGD (million gallons per day)2022
BELOIT WWTPBeloit0.6 MGD (million gallons per day)2022
CAVELAND ENV AUTH - CAVE CITY STPHorse Cave0.6 MGD (million gallons per day)2022
JENKINS STPJenkins0.6 MGD (million gallons per day)2022
HICKMAN EASTHickman0.6 MGD (million gallons per day)2022
WHITESBURG STPWhitesburg0.6 MGD (million gallons per day)2022
St. Mary Parish Water & Sewer Commission No. 1Amelia0.6 MGD (million gallons per day)2022
LUTCHER SEW SYSLutcher0.6 MGD (million gallons per day)2022
VIVIAN STPVivian0.6 MGD (million gallons per day)2022
MANSURA WWTPMansura0.6 MGD (million gallons per day)2022
FERRIDAY SOUTHWEST WWTPFerriday0.6 MGD (million gallons per day)2022
Town of RidgecrestFerriday0.6 MGD (million gallons per day)2022

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.