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

Wastewater treatment plants in United States · Illinois

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766 inventory records · EPA Clean Watersheds Needs Survey 2022

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

766 results

CompareNameNative sizeYear
EASTON SEWAGE TREATMENT FEaston0.05 MGD (million gallons per day)2022
MASON STWMason0.05 MGD (million gallons per day)2022
BONNIE STPBonnie0.05 MGD (million gallons per day)2022
INA STPIna0.05 MGD (million gallons per day)2022
MaldenMalden0.05 MGD (million gallons per day)2022
XENIA STPXenia0.05 MGD (million gallons per day)2022
PANAMA STPPanama0.05 MGD (million gallons per day)2022
DAHLGREN STPDahlgren0.05 MGD (million gallons per day)2022
SCALES MOUND STPScales Mound0.05 MGD (million gallons per day)2022
MAQUON STPMaquon0.05 MGD (million gallons per day)2022
BALDWIN STPBaldwin0.05 MGD (million gallons per day)2022
WINSLOW WTPWinslow0.05 MGD (million gallons per day)2022
BEECHER CITY STPBeecher City0.05 MGD (million gallons per day)2022
EDDYVILLE. STPEddyville0.049 MGD (million gallons per day)2022
BELLE RIVE WWTPBelle Rive0.048 MGD (million gallons per day)2022
MONTROSE STPMontrose0.048 MGD (million gallons per day)2022
NEW GRAND CHAIN STPGrand Chain0.048 MGD (million gallons per day)2022
ORIENT STPOrient0.047 MGD (million gallons per day)2022
MANLIUS STPManlius0.045 MGD (million gallons per day)2022
ST. PETER STWSaint Peter0.042 MGD (million gallons per day)2022
PULASKI STPPulaski0.042 MGD (million gallons per day)2022
HANAFORD STPLogan0.042 MGD (million gallons per day)2022
ROYAL LAKES STPShipman0.041 MGD (million gallons per day)2022
COLP SEWAGE TREATMENT PLAColp0.04 MGD (million gallons per day)2022
IUKA STPIuka0.04 MGD (million gallons per day)2022
WALTONVILLE STPWaltonville0.04 MGD (million gallons per day)2022
PIERRON WEST STPPierron0.04 MGD (million gallons per day)2022
FILLMORE STPFillmore0.04 MGD (million gallons per day)2022
MUDDY STPMuddy0.04 MGD (million gallons per day)2022
ST. ROSE STPBreese0.04 MGD (million gallons per day)2022
WEST SALEM SO. LAGOONWest Salem0.04 MGD (million gallons per day)2022
BANNER STPBanner0.04 MGD (million gallons per day)2022
RUMA STPCampbell Hill0.04 MGD (million gallons per day)2022
CAMPBELL HILL STPCampbell Hill0.04 MGD (million gallons per day)2022
VERGENNES WWTPVergennes0.04 MGD (million gallons per day)2022
ROCK CITY STPRock City0.04 MGD (million gallons per day)2022
MILTON STPMilton0.04 MGD (million gallons per day)2022
CLAREMONT STPClaremont0.04 MGD (million gallons per day)2022
STE MARIE STPSainte Marie0.04 MGD (million gallons per day)2022
MILL SHOALS WWTPMill Shoals0.038 MGD (million gallons per day)2022
McNabb, Village ofMc Nabb0.037 MGD (million gallons per day)2022
New Memphis SD WastewaterNew Memphis0.035 MGD (million gallons per day)2022
Verona WastewaterVerona0.034 MGD (million gallons per day)2022
ADDIEVILLE STPAddieville0.03 MGD (million gallons per day)2022
SEWARD STPSeward0.03 MGD (million gallons per day)2022
Lisbon, Village ofNewark0.03 MGD (million gallons per day)2022
ENFIELD WEST LAGOONEnfield0.03 MGD (million gallons per day)2022
KEENSBURG STPKeensburg0.03 MGD (million gallons per day)2022
WATAGA STP (SOUTH)Wataga0.03 MGD (million gallons per day)2022
WATSON STPWatson0.03 MGD (million gallons per day)2022
KINDERHOOK STPKinderhook0.03 MGD (million gallons per day)2022
PARKERSBURG STPParkersburg0.03 MGD (million gallons per day)2022
WILLOW HILL STPWillow Hill0.03 MGD (million gallons per day)2022
NORRIS STPNorris City0.029 MGD (million gallons per day)2022
SHUMWAY WASTE TREATMENT PShumway0.027 MGD (million gallons per day)2022
DU BOIS STPDu Bois0.027 MGD (million gallons per day)2022
OHLMAN STPOhlman0.025 MGD (million gallons per day)2022
WEST POINT WWTFWest Point0.025 MGD (million gallons per day)2022
Tennessee Wastewater SystemTennessee0.025 MGD (million gallons per day)2022
HUEY STPHuey0.023 MGD (million gallons per day)2022
SPRINGERTON STPSpringerton0.02 MGD (million gallons per day)2022
PIERRON EAST STPPierron0.02 MGD (million gallons per day)2022
ELLIS GROVE STPEllis Grove0.02 MGD (million gallons per day)2022
KENNEY STPKenney0.02 MGD (million gallons per day)2022
MaeystownMaeystown0.018 MGD (million gallons per day)2022
TRICO COMMUNITY HIGHSCHOOL WWTPCampbell Hill0.01 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.