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

Wastewater treatment plants in United States · Wisconsin

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586 inventory records · EPA Clean Watersheds Needs Survey 2022

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

586 results

CompareNameNative sizeYear
BANGOR WWTPBangor0.156 MGD (million gallons per day)2022
IRON RIDGE WWTPIron Ridge0.156 MGD (million gallons per day)2022
GRESHAM WWTPGresham0.153 MGD (million gallons per day)2022
LITTLE SUAMICO SD #1 WWTPLittle Suamico0.151 MGD (million gallons per day)2022
Wazee Area Wastewater CommissionBlack River Falls0.15 MGD (million gallons per day)2022
Menominee Tribe - STPKeshena0.15 MGD (million gallons per day)2022
Eden - STPEden0.15 MGD (million gallons per day)2022
PEPIN WWTPPepin0.15 MGD (million gallons per day)2022
SHIOCTON WWTPShiocton0.15 MGD (million gallons per day)2022
BENTON STPBenton0.147 MGD (million gallons per day)2022
BIRNAMWOOD STPBirnamwood0.146 MGD (million gallons per day)2022
ALMENA WWTPClinton0.143 MGD (million gallons per day)2022
WONEWOC WWTPWonewoc0.142 MGD (million gallons per day)2022
FREDERIC STPFrederic0.14 MGD (million gallons per day)2022
NORWALK WWTPNorwalk0.138 MGD (million gallons per day)2022
MT. CALVARY WWTPMount Calvary0.135 MGD (million gallons per day)2022
BLANCHARDVILLE STPBlanchardville0.132 MGD (million gallons per day)2022
THREE LAKES SD WWTPThree Lakes0.131 MGD (million gallons per day)2022
CASCADE WWTPCascade0.13 MGD (million gallons per day)2022
DORCHESTER WWTPDorchester0.13 MGD (million gallons per day)2022
WRIGHTSTOWN SD #1 STPGreenville0.13 MGD (million gallons per day)2022
LAONA SD #1 - STPLaona0.13 MGD (million gallons per day)2022
CAMBRIA WWTPCambria0.127 MGD (million gallons per day)2022
ALBANY WWTPAlbany0.125 MGD (million gallons per day)2022
BROWNSVILLE WWTPBrownsville0.125 MGD (million gallons per day)2022
GILMAN STPGilman0.125 MGD (million gallons per day)2022
LENA WWTPLena0.125 MGD (million gallons per day)2022
MUSCODA STPMuscoda0.125 MGD (million gallons per day)2022
ELCHO SD #1 STPElcho0.125 MGD (million gallons per day)2022
Dekorra UD #1 - WWTPPoynette0.124 MGD (million gallons per day)2022
ALMA WWTPAlma0.123 MGD (million gallons per day)2022
AUBURNDALE WWTPAuburndale0.123 MGD (million gallons per day)2022
CASHTON WWTPCashton0.121 MGD (million gallons per day)2022
BALSAM LAKE STPBalsam Lake0.12 MGD (million gallons per day)2022
HIGHLAND WWTPHighland0.12 MGD (million gallons per day)2022
NEWBURG STPNewburg0.12 MGD (million gallons per day)2022
WALDO WWTPWaldo0.12 MGD (million gallons per day)2022
FALL CREEK WWTPFall Creek0.119 MGD (million gallons per day)2022
SOLON SPRINGS STPSolon Springs0.118 MGD (million gallons per day)2022
ARLINGTON WWTPArlington0.117 MGD (million gallons per day)2022
WILD ROSE WWTPWild Rose0.117 MGD (million gallons per day)2022
BROOKLYN STPBrooklyn0.116 MGD (million gallons per day)2022
STAR PRAIRIE STPStar Prairie0.116 MGD (million gallons per day)2022
PHELPS SD #1 - STPPhelps0.115 MGD (million gallons per day)2022
RIO WWTPRio0.115 MGD (million gallons per day)2022
SPRING VALLEY STPSpring Valley0.115 MGD (million gallons per day)2022
CURTISS STPCurtiss0.112 MGD (million gallons per day)2022
STODDARD WWTPStoddard0.112 MGD (million gallons per day)2022
TIGERTON WWTPTigerton0.112 MGD (million gallons per day)2022
FOOTVILLE STPFootville0.11 MGD (million gallons per day)2022
JUNCTION CITY STPJunction City0.11 MGD (million gallons per day)2022
MINONG STPMinong0.11 MGD (million gallons per day)2022
MONTFORT STPMontfort0.11 MGD (million gallons per day)2022
Florence Utility CommissionFlorence0.11 MGD (million gallons per day)2022
SOLDIERS GROVE WWTPSoldiers Grove0.11 MGD (million gallons per day)2022
IRON RIVER SD #1 - STPIron River0.107 MGD (million gallons per day)2022
COLFAX WWTPColfax0.105 MGD (million gallons per day)2022
PLAIN STPPlain0.105 MGD (million gallons per day)2022
VESPER STPVesper0.103 MGD (million gallons per day)2022
CASCO WWTPCasco0.101 MGD (million gallons per day)2022
ONION RIVER SC STPHingham0.101 MGD (million gallons per day)2022
LIVINGSTON STPLivingston0.1 MGD (million gallons per day)2022
PRENTICE STPPrentice0.1 MGD (million gallons per day)2022
REESEVILLE WWTPReeseville0.1 MGD (million gallons per day)2022
VIOLA STPViola0.1 MGD (million gallons per day)2022
WHITELAW WWTPWhitelaw0.1 MGD (million gallons per day)2022
WRIGHTSTOWN STPGreenleaf0.1 MGD (million gallons per day)2022
WYOCENA WWTPWyocena0.1 MGD (million gallons per day)2022
GLIDDEN SD - STPGlidden0.1 MGD (million gallons per day)2022
WABENO SD #1 - STPWabeno0.1 MGD (million gallons per day)2022
BEAR CREEK WWTPBear Creek0.1 MGD (million gallons per day)2022
SURING WWTPSuring0.096 MGD (million gallons per day)2022
Town of Farmington Sanitary District WWTFKewaskum0.095 MGD (million gallons per day)2022
CENTURIA STPCenturia0.095 MGD (million gallons per day)2022
READSTOWN WWTPReadstown0.094 MGD (million gallons per day)2022
BLOOMINGTON STPBloomington0.092 MGD (million gallons per day)2022
BOYD WWTPBoyd0.092 MGD (million gallons per day)2022
CLAYTON STPClayton0.09 MGD (million gallons per day)2022
KIELER SD #1 - STPKieler0.09 MGD (million gallons per day)2022
UNITY STPUnity0.089 MGD (million gallons per day)2022
WILTON WWTPWilton0.089 MGD (million gallons per day)2022
STETSONVILLE STPStetsonville0.088 MGD (million gallons per day)2022
JAMESTOWN SD #3 STPCuba City0.088 MGD (million gallons per day)2022
Joint Water Quality CommissionDanbury0.087 MGD (million gallons per day)2022
GAYS MILLS STPGays Mills0.087 MGD (million gallons per day)2022
SUPERIOR VILLAGE STPSuperior0.087 MGD (million gallons per day)2022
ONTARIO WWTPOntario0.086 MGD (million gallons per day)2022
WEBSTER STPWebster0.085 MGD (million gallons per day)2022
LAND O'LAKES SD #1 STPLand O Lakes0.085 MGD (million gallons per day)2022
SULLIVAN WWTPSullivan0.083 MGD (million gallons per day)2022
MERCER SD #1 - WWTPMercer0.083 MGD (million gallons per day)2022
FAIRCHILD STPFairchild0.081 MGD (million gallons per day)2022
KRAKOW SD #1 STPKrakow0.081 MGD (million gallons per day)2022
ABRAMS SD #1 STPAbrams0.08 MGD (million gallons per day)2022
FRANCIS CREEK WWTPManitowoc0.08 MGD (million gallons per day)2022
WAUSAUKEE WWTPWausaukee0.08 MGD (million gallons per day)2022
WAUZEKA WWTPWauzeka0.08 MGD (million gallons per day)2022
WINTER STPWinter0.08 MGD (million gallons per day)2022
GOODMAN SD #1 WWTPGoodman0.08 MGD (million gallons per day)2022
ELMWOOD VILLAGE WWTPElmwood0.079 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.