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

Wastewater treatment plants in United States · Michigan

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394 inventory records · EPA Clean Watersheds Needs Survey 2022

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

394 results

CompareNameNative sizeYear
ST CLAIR STPSaint Clair1.39 MGD (million gallons per day)2022
BIG RAPIDS WWTPBig Rapids1.39 MGD (million gallons per day)2022
HOLLY STPHolly1.35 MGD (million gallons per day)2022
WIXOM STPWixom1.3 MGD (million gallons per day)2022
PLAINWELL STPPlainwell1.3 MGD (million gallons per day)2022
BELDING STPBelding1.2 MGD (million gallons per day)2022
SPARTA WASTEWATER TRMTSparta1.2 MGD (million gallons per day)2022
GRAND VALLEY COLLEGE STPMuskegon1.2 MGD (million gallons per day)2022
HOWELL STPHowell1.2 MGD (million gallons per day)2022
GUN LAKE AREA STPShelbyville1.2 MGD (million gallons per day)2022
COLDWATERColdwater1.2 MGD (million gallons per day)2022
ROLLIN-WOODSTOCK STPAddison1.2 MGD (million gallons per day)2022
ALLEGAN STPAllegan1.2 MGD (million gallons per day)2022
NEGAUNEE STPNegaunee1.2 MGD (million gallons per day)2022
HARTLAND TWP. CSHartland1.18 MGD (million gallons per day)2022
ST. CLAIR RIVER SA WWTPEast China1.1 MGD (million gallons per day)2022
MILFORD WWTPMilford1.04 MGD (million gallons per day)2022
EATON RAPIDS WWTPEaton Rapids1 MGD (million gallons per day)2022
LOWELL STPLowell1 MGD (million gallons per day)2022
CASS CITY STPCass City1 MGD (million gallons per day)2022
GLADSTONE STPGladstone1 MGD (million gallons per day)2022
ROGERS CITY STPRogers City1 MGD (million gallons per day)2022
BOYNE CITY STPBoyne City1 MGD (million gallons per day)2022
MARINE CITY STPMarine City1 MGD (million gallons per day)2022
HASTINGS STPHastings1 MGD (million gallons per day)2022
SAUGATUCK WWTPSaugatuck1 MGD (million gallons per day)2022
CHARLEVOIX STPCharlevoix1 MGD (million gallons per day)2022
MANISTEE STPManistee1 MGD (million gallons per day)2022
MACKINAC ISLAND STPMackinac Island0.96 MGD (million gallons per day)2022
MUNISING STPMunising0.933 MGD (million gallons per day)2022
WEST BRANCH WWTPWest Branch0.9 MGD (million gallons per day)2022
COOPERSVILLE STPCoopersville0.9 MGD (million gallons per day)2022
IMLAY CITY STPImlay City0.9 MGD (million gallons per day)2022
RICHMOND WWTPPalmer0.9 MGD (million gallons per day)2022
TITTABAWASSEE TWP STPFreeland0.9 MGD (million gallons per day)2022
ISHPEMING STPIshpeming0.9 MGD (million gallons per day)2022
BERRIEN SPRINGS STPBerrien Springs0.9 MGD (million gallons per day)2022
NEWBERRY STPNewberry0.9 MGD (million gallons per day)2022
PFAS Treatment MarquetteMarquette0.864 MGD (million gallons per day)2022
OSCODA TWP WWTPOscoda0.84 MGD (million gallons per day)2022
MARSHALL STPMarshall0.8 MGD (million gallons per day)2022
MACKINAW CITY WWTPMackinaw City0.8 MGD (million gallons per day)2022
FOWLERVILLE WWSLFowlerville0.8 MGD (million gallons per day)2022
CARLETON LAGOONCarleton0.74 MGD (million gallons per day)2022
DENTON TWP WWTFPrudenville0.7 MGD (million gallons per day)2022
CROSWELL STPCroswell0.7 MGD (million gallons per day)2022
BIRCH RUN STPBirch Run0.7 MGD (million gallons per day)2022
BESSEMER STPBessemer0.7 MGD (million gallons per day)2022
OTSEGO STPOtsego0.7 MGD (million gallons per day)2022
ESSEXVILLE STPEssexville0.675 MGD (million gallons per day)2022
ROSCOMMON TWP WWTFHoughton Lake0.67 MGD (million gallons per day)2022
WILLIAMSTON WTPWilliamston0.65 MGD (million gallons per day)2022
HARBOR BEACH WWTPHarbor Beach0.65 MGD (million gallons per day)2022
GLADWIN TREATMENT PLANTGladwin0.65 MGD (million gallons per day)2022
MARLETTE STPMarlette0.62 MGD (million gallons per day)2022
BAD AXE WWTPBad Axe0.61 MGD (million gallons per day)2022
BUTMAN TWP WWSLGladwin0.6 MGD (million gallons per day)2022
ZEELAND STPZeeland0.6 MGD (million gallons per day)2022
CLARE WWTPClare0.6 MGD (million gallons per day)2022
L'ANSE WWTPLanse0.6 MGD (million gallons per day)2022
BILLINGS TWP. SEW. SYS.Beaverton0.6 MGD (million gallons per day)2022
DEXTER STPDexter0.58 MGD (million gallons per day)2022
BETSIE LAKE UNTILIES AUTHFrankfort0.575 MGD (million gallons per day)2022
BLISSFIELD STPBlissfield0.57 MGD (million gallons per day)2022
CHESANING STPChesaning0.55 MGD (million gallons per day)2022
WAKEFIELD TWP STPWakefield0.55 MGD (million gallons per day)2022
HART STPHart0.53 MGD (million gallons per day)2022
MANCHESTER STPManchester0.51 MGD (million gallons per day)2022
DURAND WWTFDurand0.5 MGD (million gallons per day)2022
CARO STPCaro0.5 MGD (million gallons per day)2022
VASSAR STPVassar0.5 MGD (million gallons per day)2022
PINCONNING STPPinconning0.5 MGD (million gallons per day)2022
HUDSON STPHudson0.5 MGD (million gallons per day)2022
EVART STPEvart0.5 MGD (million gallons per day)2022
BRONSON WWTFBronson0.5 MGD (million gallons per day)2022
NORWAY WASTEWATER PLANTNorway0.5 MGD (million gallons per day)2022
PORTLAND WWTPPortland0.5 MGD (million gallons per day)2022
GWINN SEWAGE LAGOONGwinn0.5 MGD (million gallons per day)2022
ALMONT WWTPAlmont0.47 MGD (million gallons per day)2022
WHITE PIGEON STPWhite Pigeon0.45 MGD (million gallons per day)2022
DUNDEE STPDundee0.44 MGD (million gallons per day)2022
CLINTON STPClinton0.425 MGD (million gallons per day)2022
ONTONAGON STPWhite Pine0.42 MGD (million gallons per day)2022
WHITE CLOUD STPWhite Cloud0.41 MGD (million gallons per day)2022
OVID TWP LAGOONOvid0.41 MGD (million gallons per day)2022
ELK RAPIDS STPElk Rapids0.41 MGD (million gallons per day)2022
LESLIE WWTPLeslie0.4 MGD (million gallons per day)2022
CEDAR SPRINGS STPCedar Springs0.4 MGD (million gallons per day)2022
ITHACA WWSLIthaca0.39 MGD (million gallons per day)2022
EAST JORDAN STPEast Jordan0.38 MGD (million gallons per day)2022
SUTTONS BAY STPSuttons Bay0.37 MGD (million gallons per day)2022
GRAYLING STPGrayling0.36 MGD (million gallons per day)2022
SARANAC STPSaranac0.35 MGD (million gallons per day)2022
ARMADA WWTPArmada0.35 MGD (million gallons per day)2022
REED CITY STPReed City0.35 MGD (million gallons per day)2022
HARTFORD STPHartford0.35 MGD (million gallons per day)2022
GAYLORD SEWAGE LAGOONSGaylord0.35 MGD (million gallons per day)2022
BARAGA STPBaraga0.35 MGD (million gallons per day)2022
LUNA PIER STP-CSLuna Pier0.348 MGD (million gallons per day)2022
MARKEY TWP WWTFHoughton Lake0.33 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.