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

Wastewater treatment plants in United States · Iowa

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775 inventory records · EPA Clean Watersheds Needs Survey 2022

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

775 results

CompareNameNative sizeYear
DEDHAM STLDedham0.035 MGD (million gallons per day)2022
HORNICK SEWAGE LAGOONHornick0.035 MGD (million gallons per day)2022
LISCOMB STLLiscomb0.035 MGD (million gallons per day)2022
MAURICE WWTPMaurice0.035 MGD (million gallons per day)2022
ONSLOW WWTPOnslow0.035 MGD (million gallons per day)2022
SMITHLAND WWTPSmithland0.035 MGD (million gallons per day)2022
KELLERTON WWTPKellerton0.034 MGD (million gallons per day)2022
LELAND WWTPLeland0.034 MGD (million gallons per day)2022
LESTER STLLester0.034 MGD (million gallons per day)2022
LINEVILLE STLLineville0.034 MGD (million gallons per day)2022
LUVERNE STLLu Verne0.034 MGD (million gallons per day)2022
PLAINFIELD STLPlainfield0.034 MGD (million gallons per day)2022
VOLGA CITY WWTPVolga0.034 MGD (million gallons per day)2022
CANTRIL WWTPCantril0.033 MGD (million gallons per day)2022
CRYSTAL LAKE WWTPCrystal Lake0.033 MGD (million gallons per day)2022
FOSTORIA WWTPFostoria0.033 MGD (million gallons per day)2022
HOLLAND WWTPHolland0.033 MGD (million gallons per day)2022
MODALE WWTPModale0.033 MGD (million gallons per day)2022
WELTON STPWelton0.033 MGD (million gallons per day)2022
BOXHOLM WWTPBoxholm0.033 MGD (million gallons per day)2022
AURORA STLAurora0.032 MGD (million gallons per day)2022
CHURDAN WWTPChurdan0.032 MGD (million gallons per day)2022
CRAWFORDSVILLE WWTPCrawfordsville0.032 MGD (million gallons per day)2022
FENTON WWTPFenton0.032 MGD (million gallons per day)2022
GARDEN GROVE WWTPGarden Grove0.032 MGD (million gallons per day)2022
LUXEMBURG WWTPLuxemburg0.032 MGD (million gallons per day)2022
VINCENT STLVincent0.032 MGD (million gallons per day)2022
CLARE WWTPClare0.031 MGD (million gallons per day)2022
CUSHING WWTPCushing0.031 MGD (million gallons per day)2022
FARMERSBURG WWTPFarmersburg0.031 MGD (million gallons per day)2022
LINN GROVE WWTPLinn Grove0.031 MGD (million gallons per day)2022
LUANA WWTPLuana0.031 MGD (million gallons per day)2022
PERSIA WASTEWATERPersia0.031 MGD (million gallons per day)2022
PRAIRIEBURG WWTPPrairieburg0.031 MGD (million gallons per day)2022
WOOLSTOCK STLWoolstock0.031 MGD (million gallons per day)2022
WAUCOMA WWTPWaucoma0.031 MGD (million gallons per day)2022
PILOT MOUND WWTPPilot Mound0.031 MGD (million gallons per day)2022
CYLINDER STLCylinder0.03 MGD (million gallons per day)2022
FREDERIKA STLFrederika0.03 MGD (million gallons per day)2022
KENSETT WWTPKensett0.03 MGD (million gallons per day)2022
KESWICK-RUSSKeswick0.03 MGD (million gallons per day)2022
LIDDERDALE WWTPLidderdale0.03 MGD (million gallons per day)2022
PARNELL STLParnell0.03 MGD (million gallons per day)2022
REMBRANDT WWTPRembrandt0.03 MGD (million gallons per day)2022
SHERRILL EAST WWTPSherrill0.03 MGD (million gallons per day)2022
VAN WERT WWTPVan Wert0.03 MGD (million gallons per day)2022
WALLINGFORD WWTPWallingford0.03 MGD (million gallons per day)2022
ST DONATUS WASTEWATERSaint Donatus0.03 MGD (million gallons per day)2022
DEWAR SD STLDewar0.03 MGD (million gallons per day)2022
CLEMONS STLClemons0.029 MGD (million gallons per day)2022
CLUTIER STLClutier0.029 MGD (million gallons per day)2022
LOCKRIDGE WWTPLockridge0.029 MGD (million gallons per day)2022
MELVINMelvin0.029 MGD (million gallons per day)2022
REASNOR STLReasnor0.029 MGD (million gallons per day)2022
THOR LAGOONThor0.029 MGD (million gallons per day)2022
RIDGEWAY WSLRidgeway0.029 MGD (million gallons per day)2022
BRAYTON STLBrayton0.028 MGD (million gallons per day)2022
BRUNSVILLE WWTPBrunsville0.028 MGD (million gallons per day)2022
GRAFTON WWTPGrafton0.028 MGD (million gallons per day)2022
GRANVILLE WWTPGranville0.028 MGD (million gallons per day)2022
MESERVEY STLMeservey0.028 MGD (million gallons per day)2022
SEARSBORO STLSearsboro0.028 MGD (million gallons per day)2022
WHITTEN LAGOONWhitten0.028 MGD (million gallons per day)2022
WODEN LAGOONSWoden0.028 MGD (million gallons per day)2022
KEOMAH VILLAGE LAGOONOskaloosa0.028 MGD (million gallons per day)2022
LINDEN WWTPLinden0.027 MGD (million gallons per day)2022
BRADDYVILLE WWTPBraddyville0.026 MGD (million gallons per day)2022
BRIDGEWATER STLBridgewater0.026 MGD (million gallons per day)2022
MERIDEN WWTPMeriden0.026 MGD (million gallons per day)2022
PULASKI WWTPPulaski0.026 MGD (million gallons per day)2022
RANDOLPH WWTPRandolph0.026 MGD (million gallons per day)2022
RUTLAND LAGOONRutland0.026 MGD (million gallons per day)2022
ALVORD WWTPAlvord0.025 MGD (million gallons per day)2022
CALUMET STLCalumet0.025 MGD (million gallons per day)2022
HANCOCK WW STAB LAGOONHancock0.025 MGD (million gallons per day)2022
KAMRAR STLKamrar0.025 MGD (million gallons per day)2022
LANESBORO STLLanesboro0.025 MGD (million gallons per day)2022
NEW PROVIDENCE WWTFNew Providence0.025 MGD (million gallons per day)2022
RICKARDSVILLE WWTPDurango0.025 MGD (million gallons per day)2022
SHAMBAUGH WWTPShambaugh0.025 MGD (million gallons per day)2022
DELOIT STLDeloit0.025 MGD (million gallons per day)2022
COLESBURG SE STLColesburg0.024 MGD (million gallons per day)2022
LUCAS WWTPLucas0.024 MGD (million gallons per day)2022
PANAMA STLPanama0.024 MGD (million gallons per day)2022
WOODBURN, WWTPWoodburn0.024 MGD (million gallons per day)2022
DOUDS/LEANDO WWSDouds0.024 MGD (million gallons per day)2022
DUNDEE STLDundee0.023 MGD (million gallons per day)2022
ELBERON STLElberon0.023 MGD (million gallons per day)2022
HARRIS WWTPHarris0.023 MGD (million gallons per day)2022
SOUTH ENGLISH WWTPSouth English0.023 MGD (million gallons per day)2022
BLOCKTON WWTPBlockton0.022 MGD (million gallons per day)2022
DICKENS WWTPDickens0.022 MGD (million gallons per day)2022
OLLIE WWTPOllie0.022 MGD (million gallons per day)2022
STOUT WWTPStout0.022 MGD (million gallons per day)2022
BARNES CITY STLBarnes City0.021 MGD (million gallons per day)2022
EXLINE WWTPExline0.021 MGD (million gallons per day)2022
HENDERSON STLHenderson0.021 MGD (million gallons per day)2022
NEW LIBERTY STPNew Liberty0.021 MGD (million gallons per day)2022
NODAWAY WWTPNodaway0.021 MGD (million gallons per day)2022
WATERVILLE WASTEWATERWaterville0.021 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.