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

Wastewater treatment plants in United States · Colorado

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400 inventory records · EPA Clean Watersheds Needs Survey 2022

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

400 results

CompareNameNative sizeYear
HIGHLINE LAKE PK STPLoma0.05 MGD (million gallons per day)2022
Alta Colorado MDLeadville0.05 MGD (million gallons per day)2022
Forest Hills Metropolitan DistrictGolden0.05 MGD (million gallons per day)2022
Eckley, Town ofEckley0.05 MGD (million gallons per day)2022
Blanca, Town ofBlanca0.05 MGD (million gallons per day)2022
Fleming, Town ofFleming0.05 MGD (million gallons per day)2022
Glacier View Meadows WS AssocLivermore0.05 MGD (million gallons per day)2022
Dallas Creek/Ouray CountyRidgway0.05 MGD (million gallons per day)2022
Glacier View Meadows WSAWard0.05 MGD (million gallons per day)2022
GRANADA STPGranada0.045 MGD (million gallons per day)2022
ELBERT STPElbert0.044 MGD (million gallons per day)2022
Almont Sewage Hereafter In Transit PlantGunnison0.04 MGD (million gallons per day)2022
ALLENSPARK STPAllenspark0.04 MGD (million gallons per day)2022
Bent County/HastyHasty0.04 MGD (million gallons per day)2022
Douglas county - LOUVIERS WWTPLouviers0.04 MGD (million gallons per day)2022
BRISTOL WWTPHolly0.04 MGD (million gallons per day)2022
PINON WWTPNucla0.04 MGD (million gallons per day)2022
ROMEO LAGOONSLa Jara0.04 MGD (million gallons per day)2022
MESA WSDMesa0.04 MGD (million gallons per day)2022
Louviers WSDLouviers0.04 MGD (million gallons per day)2022
Teller County Wastewater UtilityDivide0.04 MGD (million gallons per day)2022
Larimer County - CSU Mountain CampusBellvue0.039 MGD (million gallons per day)2022
Divide MPC Metropolitan District No. 1 and No. 2Divide0.038 MGD (million gallons per day)2022
Iliff, Town ofIliff0.038 MGD (million gallons per day)2022
KIT CARSON WWTPKit Carson0.037 MGD (million gallons per day)2022
COAL CREEKCoal Creek0.036 MGD (million gallons per day)2022
Peetz, Town ofPeetz0.035 MGD (million gallons per day)2022
Eldorado Springs LIDEldorado Springs0.032 MGD (million gallons per day)2022
Boone, Town ofBoone0.031 MGD (million gallons per day)2022
Routt County Department of Environmental HealthSteamboat Springs0.03 MGD (million gallons per day)2022
Southwest Mesa County Rural Services PIDGateway0.03 MGD (million gallons per day)2022
San Miguel County-PlacervillePlacerville0.03 MGD (million gallons per day)2022
OLNEY SPRINGS WWTPOlney Springs0.03 MGD (million gallons per day)2022
LEFT HAND STPBoulder0.03 MGD (million gallons per day)2022
LAKE ELDORA WWTPNederland0.03 MGD (million gallons per day)2022
Routt County Community of Phippsburg WWTPPhippsburg0.03 MGD (million gallons per day)2022
RAMAH WWTPRamah0.03 MGD (million gallons per day)2022
Division of Highways STPArvada0.03 MGD (million gallons per day)2022
BACA GRANDE WWTP, ASPENCrestone0.03 MGD (million gallons per day)2022
NORTH LAMAR SAN DISTLamar0.03 MGD (million gallons per day)2022
Arriba , Town OfArriba0.03 MGD (million gallons per day)2022
Aspen Park MDConifer0.03 MGD (million gallons per day)2022
Fairway Pines SDRidgway0.03 MGD (million gallons per day)2022
Red Sky Ranch Metropolitan DistrictEdwards0.029 MGD (million gallons per day)2022
Prosperity Lane SDLamar0.029 MGD (million gallons per day)2022
Cheraw, Town ofCheraw0.027 MGD (million gallons per day)2022
Silver Plume, Town ofSilver Plume0.027 MGD (million gallons per day)2022
SUGAR CITY WWTPSugar City0.026 MGD (million gallons per day)2022
SW Mesa Co District WWTFGateway0.025 MGD (million gallons per day)2022
GROVER SEWAGE LAGOONGrover0.025 MGD (million gallons per day)2022
Boulder County/Eldorado SpringsBoulder0.025 MGD (million gallons per day)2022
Timbers WSDSteamboat Springs0.025 MGD (million gallons per day)2022
Leadville / Lake CountyLeadville0.025 MGD (million gallons per day)2022
Sedalia WSDSedalia0.022 MGD (million gallons per day)2022
Sage Pointe Water and Sanitation CoSterling0.02 MGD (million gallons per day)2022
SEDGWICK WWTPSedgwick0.02 MGD (million gallons per day)2022
VILAS STPVilas0.02 MGD (million gallons per day)2022
CROOK WWTPCrook0.02 MGD (million gallons per day)2022
SEIBERT WWTPSeibert0.02 MGD (million gallons per day)2022
GOLDEN GATE CANYON WWTPGolden0.02 MGD (million gallons per day)2022
BONNY REC. AREA STPIdalia0.02 MGD (million gallons per day)2022
ORCHARD CITY LAGOONOrchard0.02 MGD (million gallons per day)2022
MONTROSE/CASIAS LAVATOMontrose0.02 MGD (million gallons per day)2022
GALETON SAN DISTEaton0.02 MGD (million gallons per day)2022
MONTEZUMA, TOWN OFDillon0.02 MGD (million gallons per day)2022
SILVER HILLS SDBlack Hawk0.02 MGD (million gallons per day)2022
Holland Creek MDEdwards0.02 MGD (million gallons per day)2022
Snyder SDSnyder0.02 MGD (million gallons per day)2022
Cokedale, Town ofTrinidad0.02 MGD (million gallons per day)2022
Amherst Unincorp AreaHolyoke0.02 MGD (million gallons per day)2022
Genoa , Town ofGenoa0.02 MGD (million gallons per day)2022
Penrose SDPenrose0.02 MGD (million gallons per day)2022
Conifer MDConifer0.02 MGD (million gallons per day)2022
Larimer County - Carter LakeBerthoud0.02 MGD (million gallons per day)2022
Bethune, Town ofBethune0.018 MGD (million gallons per day)2022
Gardner WSDWalsenburg0.017 MGD (million gallons per day)2022
Delta County, Horizons Healthcare and Retirement CommunityEckert0.015 MGD (million gallons per day)2022
Mack SDMack0.015 MGD (million gallons per day)2022
VONA WWTPVona0.015 MGD (million gallons per day)2022
PRITCHETT LAGOONPritchett0.015 MGD (million gallons per day)2022
Campo, Town of, WWTPCampo0.014 MGD (million gallons per day)2022
Mount Vernon Country Club Metropolitan DistrictGolden0.013 MGD (million gallons per day)2022
Gilpin County School District RE-1Black Hawk0.012 MGD (million gallons per day)2022
Routt County/Hahn's PeakClark0.012 MGD (million gallons per day)2022
Cornerstone Metropolitan District No 1Montrose0.01 MGD (million gallons per day)2022
Lowell Whiteman School/Steamboat Mountain SchoolSteamboat Springs0.01 MGD (million gallons per day)2022
Spring Valley Metropolitan District No. 1Elizabeth0.01 MGD (million gallons per day)2022
MARBLE WWTPCarbondale0.01 MGD (million gallons per day)2022
Custer County/San IsabelRye0.01 MGD (million gallons per day)2022
PAOLI LAGOONPaoli0.01 MGD (million gallons per day)2022
Spring Creek EstatesMontrose0.01 MGD (million gallons per day)2022
UTE PASS / CHIPETA / CASCADECascade0.01 MGD (million gallons per day)2022
Idalia LagoonIdalia0.01 MGD (million gallons per day)2022
Hidden View EstatesLoveland0.01 MGD (million gallons per day)2022
Park County Moore Dale RanchBailey0.01 MGD (million gallons per day)2022
Kim, Town ofKim0.006 MGD (million gallons per day)2022
Thistle Community HousingBoulder0.006 MGD (million gallons per day)2022
STARKVILLETrinidad0.006 MGD (million gallons per day)2022
Catamount Metropolitan DistrictSteamboat Springs0.005 MGD (million gallons per day)2022
TWO BUTTES WWTFTwo Buttes0.003 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.