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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
GLWA WRRFDetroit930 MGD (million gallons per day)2022
WYANDOTTE WWTPWyandotte125 MGD (million gallons per day)2022
GRAND RAPIDS WWTPGrand Rapids61.1 MGD (million gallons per day)2022
KALAMAZOO WWTPKalamazoo53.5 MGD (million gallons per day)2022
FLINT WPCFFlint50 MGD (million gallons per day)2022
YCUA WWTPYpsilanti45.9 MGD (million gallons per day)2022
MUSKEGON CO METRO STPMuskegon43 MGD (million gallons per day)2022
WARREN WWTPWarren36 MGD (million gallons per day)2022
LANSING WWTPLansing35 MGD (million gallons per day)2022
SAGINAW STPSaginaw32 MGD (million gallons per day)2022
ANN ARBOR WWTPAnn Arbor29.5 MGD (million gallons per day)2022
RAGNONE (DIST.#2) WWTPMontrose25.9 MGD (million gallons per day)2022
Clinton River Water Resource Recovery FacilityPontiac25.5 MGD (million gallons per day)2022
WYOMING WWTPWyoming24 MGD (million gallons per day)2022
MONROE METRO WWTPMonroe24 MGD (million gallons per day)2022
HURON VALLEY WWTP-SOUTHRockwood24 MGD (million gallons per day)2022
PORT HURON WWTPPort Huron20 MGD (million gallons per day)2022
JACKSON WWTPJackson19 MGD (million gallons per day)2022
EAST LANSING WWPEast Lansing18.75 MGD (million gallons per day)2022
BATTLE CREEK STPBattle Creek18 MGD (million gallons per day)2022
BENTON HARBOR-ST JOSEPHSaint Joseph15.3 MGD (million gallons per day)2022
HOLLAND WTFHolland12 MGD (million gallons per day)2022
BAY CITY STPBay City12 MGD (million gallons per day)2022
WEST BAY CO REGIONAL WWTPBay City10.28 MGD (million gallons per day)2022
MIDLAND WWTPMidland10 MGD (million gallons per day)2022
TRAVERSE CITY REG STPTraverse City8.5 MGD (million gallons per day)2022
SAULT STE MARIE STPSault Sainte Marie8 MGD (million gallons per day)2022
ADRIAN WWTPAdrian7 MGD (million gallons per day)2022
GRAND HAVEN STPGrand Haven6.67 MGD (million gallons per day)2022
TRENTON WWTPTrenton6.5 MGD (million gallons per day)2022
MARQUETTE WWTPMarquette6.2 MGD (million gallons per day)2022
DELTA TWP WWTPLansing6 MGD (million gallons per day)2022
MT CLEMENS WWTPMount Clemens6 MGD (million gallons per day)2022
OWOSSO WWTPOwosso6 MGD (million gallons per day)2022
BEDFORD TOWNSHIP STPErie6 MGD (million gallons per day)2022
NILES WASTEWATER TREAT PLNiles5.8 MGD (million gallons per day)2022
ALPENA WWTSAlpena5.5 MGD (million gallons per day)2022
SO CLINTON WWTPDewitt5 MGD (million gallons per day)2022
SAGINAW TWP STPSaginaw4.77 MGD (million gallons per day)2022
GRANDVILLE WWTPGrandville4.4 MGD (million gallons per day)2022
MT PLEASANT WWTPMount Pleasant4.14 MGD (million gallons per day)2022
DELHI TWP WWTPHolt4 MGD (million gallons per day)2022
IONIA STPIonia4 MGD (million gallons per day)2022
ALBION WWTPAlbion4 MGD (million gallons per day)2022
WALLED LAKE WWTPNovi3.5 MGD (million gallons per day)2022
GOGEBIC-IRON WWA STPIronwood3.4 MGD (million gallons per day)2022
IRON MT-KINGSFORD WWTPKingsford3.3 MGD (million gallons per day)2022
MENOMINEE WWTPMenominee3.2 MGD (million gallons per day)2022
PORTAGE LAKE WSAHoughton3.2 MGD (million gallons per day)2022
CADILLAC TWP WTWCadillac3.2 MGD (million gallons per day)2022
FLUSHING WWTFFlushing3 MGD (million gallons per day)2022
BRIGHTON STPBrighton3 MGD (million gallons per day)2022
NORTHFIELD STPWhitmore Lake3 MGD (million gallons per day)2022
LEONI TWP STPMichigan Center3 MGD (million gallons per day)2022
COMMERCE TWP WWTPWalled Lake3 MGD (million gallons per day)2022
STURGIS STPSturgis2.8 MGD (million gallons per day)2022
THREE RIVERS WWTPThree Rivers2.75 MGD (million gallons per day)2022
GENESEE COUNTY DIST. 3 WWTPLinden2.75 MGD (million gallons per day)2022
ALGONAC STPAlgonac2.7 MGD (million gallons per day)2022
SALINE STPSaline2.69 MGD (million gallons per day)2022
MARYSVILLE STPMarysville2.67 MGD (million gallons per day)2022
PETOSKEY WWTPPetoskey2.51 MGD (million gallons per day)2022
ST JOHNS WWTPSaint Johns2.5 MGD (million gallons per day)2022
SOUTH LYON WWTPSouth Lyon2.5 MGD (million gallons per day)2022
DOWAGIAC STPDowagiac2.5 MGD (million gallons per day)2022
ALMA WWTPAlma2.5 MGD (million gallons per day)2022
CHEBOYGAN WWTPCheboygan2.5 MGD (million gallons per day)2022
LUDINGTON STPLudington2.5 MGD (million gallons per day)2022
EAST TAWAS WWTPEast Tawas2.4 MGD (million gallons per day)2022
Allendale Charter TownshipAllendale2.4 MGD (million gallons per day)2022
PAW PAW STPPaw Paw2.4 MGD (million gallons per day)2022
BRIDGEPORT TWP STPBridgeport2.39 MGD (million gallons per day)2022
LAPEER STPLapeer2.3 MGD (million gallons per day)2022
GROSSE ISLE TOWNSHIP WWTPGrosse Ile2.25 MGD (million gallons per day)2022
EAST CHINA REG CSEast China2.2 MGD (million gallons per day)2022
BUENA VISTA TWP STPSaginaw2.2 MGD (million gallons per day)2022
ESCANABA WWTPEscanaba2.2 MGD (million gallons per day)2022
PAW PAW LAKE WWTPColoma2.2 MGD (million gallons per day)2022
SOUTH HAVEN STPSouth Haven2.19 MGD (million gallons per day)2022
ROMEO VILLAGE STPRomeo2.08 MGD (million gallons per day)2022
GALIEN RIVER STPNew Buffalo2 MGD (million gallons per day)2022
WEST IRON CO SEWER AUTH STPCaspian2 MGD (million gallons per day)2022
HARBOR SPRINGS CITY STPHarbor Springs1.86 MGD (million gallons per day)2022
MILAN WWTPMilan1.85 MGD (million gallons per day)2022
CHELSEA STPChelsea1.85 MGD (million gallons per day)2022
CHARLOTTE WWTPCharlotte1.8 MGD (million gallons per day)2022
FRANKENMUTH STPFrankenmuth1.8 MGD (million gallons per day)2022
BERLIN TWP STPNewport1.8 MGD (million gallons per day)2022
NEW BALTIMORE W W T PNew Baltimore1.75 MGD (million gallons per day)2022
TECUMSEH STPTecumseh1.61 MGD (million gallons per day)2022
Hamburg Twp WWTPWhitmore Lake1.6 MGD (million gallons per day)2022
ST LOUIS WWTPSaint Louis1.6 MGD (million gallons per day)2022
GRAND LEDGE WWTPGrand Ledge1.5 MGD (million gallons per day)2022
MASON WWTPMason1.5 MGD (million gallons per day)2022
GREENVILLE STPGreenville1.5 MGD (million gallons per day)2022
BUCHANAN STPBuchanan1.5 MGD (million gallons per day)2022
MANISTIQUE WWTPManistique1.5 MGD (million gallons per day)2022
HILLSDALE SEWAGE PLANTHillsdale1.5 MGD (million gallons per day)2022
ST. IGNACE STPSaint Ignace1.5 MGD (million gallons per day)2022
FREMONT STPFremont1.39 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.