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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
TAYLOR WWTPTaylor0.079 MGD (million gallons per day)2022
HATLEY STPHatley0.078 MGD (million gallons per day)2022
LAKE NEBAGAMON STPBrule0.078 MGD (million gallons per day)2022
Poygan PoySippi SD #1 - WWTPWinneconne0.078 MGD (million gallons per day)2022
Butte des Morts Consol. SD - STPOshkosh0.078 MGD (million gallons per day)2022
SEVASTOPOL SD #1 STPSturgeon Bay0.078 MGD (million gallons per day)2022
MERRILLAN WWTPMerrillan0.077 MGD (million gallons per day)2022
FORESTVILLE STPForestville0.077 MGD (million gallons per day)2022
DALLAS STPDallas0.076 MGD (million gallons per day)2022
MERRIMAC STPMerrimac0.076 MGD (million gallons per day)2022
ROCK SPRINGS STPRock Springs0.076 MGD (million gallons per day)2022
BLUE MOUNDS STPBlue Mounds0.075 MGD (million gallons per day)2022
Lincoln Hills School WWTPIrma0.075 MGD (million gallons per day)2022
RIDGEWAY STPRidgeway0.075 MGD (million gallons per day)2022
ROCKLAND STPRockland0.075 MGD (million gallons per day)2022
ALLENTON SD #1 WWTPAllenton0.075 MGD (million gallons per day)2022
ALMA CENTER STPAlma Center0.074 MGD (million gallons per day)2022
BUTTERNUT WWTPButternut0.074 MGD (million gallons per day)2022
Bay City - STPBay City0.073 MGD (million gallons per day)2022
COCHRANE WWTPCochrane0.072 MGD (million gallons per day)2022
STOCKBRIDGE STPStockbridge0.072 MGD (million gallons per day)2022
LAKE HOLCOMBE SD #1 STPHolcombe0.07 MGD (million gallons per day)2022
KENDALL STPKendall0.07 MGD (million gallons per day)2022
NORTH FREEDOM STPNorth Freedom0.07 MGD (million gallons per day)2022
SOUTH WAYNE STPSouth Wayne0.07 MGD (million gallons per day)2022
OAKDALE - WWTPOakdale0.07 MGD (million gallons per day)2022
HANCOCK WWTPDeerfield0.068 MGD (million gallons per day)2022
MILLTOWN STPMilltown0.068 MGD (million gallons per day)2022
CHASEBURG STPChaseburg0.067 MGD (million gallons per day)2022
Yorkville Sewer Utility District No 1Sturtevant0.065 MGD (million gallons per day)2022
PLAINFIELD STPPlainfield0.065 MGD (million gallons per day)2022
AVOCA WWTPAvoca0.064 MGD (million gallons per day)2022
ETTRICK WWTPEttrick0.064 MGD (million gallons per day)2022
ENDEAVOR WWTPEndeavor0.063 MGD (million gallons per day)2022
LYNDON STATION STPLyndon Station0.063 MGD (million gallons per day)2022
NEW AUBURN WWTPNew Auburn0.063 MGD (million gallons per day)2022
SEXTONVILLE SD - STPSextonville0.063 MGD (million gallons per day)2022
BRAZEAU SD #1 - STPPound0.06 MGD (million gallons per day)2022
Saint Joseph SD #1 - STPLa Crosse0.06 MGD (million gallons per day)2022
Valley Ridge CWC - STPLynxville0.06 MGD (million gallons per day)2022
BIRCHWOOD STPBirchwood0.06 MGD (million gallons per day)2022
COBB STPCobb0.06 MGD (million gallons per day)2022
GRANTON WWTPGranton0.06 MGD (million gallons per day)2022
LINDEN STPLinden0.06 MGD (million gallons per day)2022
OXFORD WWTPOxford0.06 MGD (million gallons per day)2022
PLUM CITY WWTPPlum City0.06 MGD (million gallons per day)2022
POPLAR STPPoplar0.06 MGD (million gallons per day)2022
ST. NAZIANZ WWTPSaint Nazianz0.06 MGD (million gallons per day)2022
SHELDON WWTPSheldon0.06 MGD (million gallons per day)2022
DALE SD #1 - WWTPDale0.06 MGD (million gallons per day)2022
SULLIVAN SD #1 WWTPSullivan0.06 MGD (million gallons per day)2022
DE SOTO STPDe Soto0.06 MGD (million gallons per day)2022
KNIGHT, TOWN OF - STPIron Belt0.059 MGD (million gallons per day)2022
Rosholt - STPRosholt0.058 MGD (million gallons per day)2022
LA VALLE STPLa Valle0.057 MGD (million gallons per day)2022
LONE ROCK STPLone Rock0.057 MGD (million gallons per day)2022
MORRISON SD #1 STPWrightstown0.057 MGD (million gallons per day)2022
HATFIELD SD #1 - STPMerrillan0.057 MGD (million gallons per day)2022
ARPIN WWTPArpin0.056 MGD (million gallons per day)2022
PATCH GROVE STPPatch Grove0.055 MGD (million gallons per day)2022
PACKWAUKEE SD #1 STPPackwaukee0.055 MGD (million gallons per day)2022
FIFIELD SD #1 - STPFifield0.055 MGD (million gallons per day)2022
MELROSE WWTPMelrose0.054 MGD (million gallons per day)2022
Gibbsville SD - STPSheboygan Falls0.054 MGD (million gallons per day)2022
NORTH LAKE POYGAN SD STPFremont0.053 MGD (million gallons per day)2022
FAIRWATER WWTPFairwater0.051 MGD (million gallons per day)2022
Hewitt SD - WWTPHewitt0.051 MGD (million gallons per day)2022
EASTMAN WWTPEastman0.05 MGD (million gallons per day)2022
LAKEWOOD SD #1 - STPLakewood0.05 MGD (million gallons per day)2022
MILLADORE STPMilladore0.05 MGD (million gallons per day)2022
NICHOLS WWTPNichols0.05 MGD (million gallons per day)2022
PIGEON FALLS WWTPPigeon Falls0.05 MGD (million gallons per day)2022
PRAIRIE FARM STPPrairie Farm0.05 MGD (million gallons per day)2022
RADISSON STPRadisson0.05 MGD (million gallons per day)2022
WHEELER STPWheeler0.05 MGD (million gallons per day)2022
Lebanon SD #2 - WWTPWatertown0.05 MGD (million gallons per day)2022
LK WAPOGASSET-BEAR TRAP LK - WWTPAmery0.05 MGD (million gallons per day)2022
FOREST JUNCTION SD WWTPBrillion0.05 MGD (million gallons per day)2022
LAKE TOMAHAWK SD #1 STPLake Tomahawk0.049 MGD (million gallons per day)2022
CLYMAN WWTPClyman0.048 MGD (million gallons per day)2022
RUSSELL SD #1 - STPGleason0.048 MGD (million gallons per day)2022
LARSEN-WINCHESTER SD - WWTPLarsen0.048 MGD (million gallons per day)2022
POY SIPPI SD STPPoy Sippi0.048 MGD (million gallons per day)2022
CLARK CO. HEALTH CC - STPOwen0.045 MGD (million gallons per day)2022
KELLNERSVILLE WWTPKellnersville0.045 MGD (million gallons per day)2022
LOGANVILLE STPLoganville0.045 MGD (million gallons per day)2022
NESHKORO WWTPNeshkoro0.045 MGD (million gallons per day)2022
CABLE SD #1 - STPCable0.043 MGD (million gallons per day)2022
GENOA STPGenoa0.043 MGD (million gallons per day)2022
Holy Family Convent Wastewater Treatment FacilityManitowoc0.042 MGD (million gallons per day)2022
BLUE RIVER STPBlue River0.042 MGD (million gallons per day)2022
NELSON - STPNelson0.042 MGD (million gallons per day)2022
HIXTON WWTPHixton0.042 MGD (million gallons per day)2022
KNAPP WWTPKnapp0.042 MGD (million gallons per day)2022
COLOMA STPColoma0.041 MGD (million gallons per day)2022
ALMOND WWTPAlmond0.04 MGD (million gallons per day)2022
BROWNTOWN STPBrowntown0.04 MGD (million gallons per day)2022
MOUNT HOPE STPMount Hope0.04 MGD (million gallons per day)2022
POTTER STPPotter0.04 MGD (million gallons per day)2022
JUDA SD #1 WWTPJuda0.04 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.