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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
Metro Wastewater Reclamation DistrictDenver248.8 MGD (million gallons per day)2022
Colorado Springs Utilities LVSWWTPColorado Springs75 MGD (million gallons per day)2022
South Platte Renew LITTLETON/ENGLEWOOD WWTPEnglewood50 MGD (million gallons per day)2022
BOULDER 75TH STREET WWTPBoulder25 MGD (million gallons per day)2022
Fort Collins Drake WW Reclamat FacFort Collins23 MGD (million gallons per day)2022
Colorado Springs Utilities JD Phillips WRFColorado Springs20 MGD (million gallons per day)2022
PUEBLO WWTPPueblo19 MGD (million gallons per day)2022
GREELEY WWTPGreeley14.7 MGD (million gallons per day)2022
LONGMONT WWTPLongmont13 MGD (million gallons per day)2022
Grand Junction, City ofGrand Junction12.5 MGD (million gallons per day)2022
Triview MD WWTPMonument12 MGD (million gallons per day)2022
BROOMFIELD WWTPDenver12 MGD (million gallons per day)2022
Westminster Big Dry Creek WWTFWestminster11.9 MGD (million gallons per day)2022
LOVELAND WWTPLoveland10 MGD (million gallons per day)2022
Eagle River WSDVail9.83 MGD (million gallons per day)2022
Plum Creek WW Auth Plant #1Castle Rock9.44 MGD (million gallons per day)2022
Fremont SD - Rainbow Park WWTPCanon City8.5 MGD (million gallons per day)2022
Centennial Water and Sanitation DistrictLittleton8.48 MGD (million gallons per day)2022
South Adams County WSDHenderson8 MGD (million gallons per day)2022
Fort Collins Mulberry WW FacilityFort Collins6 MGD (million gallons per day)2022
ST VRAIN SDLongmont6 MGD (million gallons per day)2022
SAND CREEK WWTPAurora5 MGD (million gallons per day)2022
STEAMBOAT SPRINGS WWTPSteamboat Springs5 MGD (million gallons per day)2022
Upper Blue Sanitation DistrictBreckenridge4.99 MGD (million gallons per day)2022
Cherokee Metropolitan DistrictColorado Springs4.8 MGD (million gallons per day)2022
SOUTH FORT COLLINS WWTPFort Collins4.5 MGD (million gallons per day)2022
LAFAYETTE STPLafayette4.4 MGD (million gallons per day)2022
Montrose, City ofMontrose4.32 MGD (million gallons per day)2022
GUNNISON WWTPGunnison4.2 MGD (million gallons per day)2022
Tri-Lakes WWTFMonument4.2 MGD (million gallons per day)2022
NORTHGLENN WWTPBrighton4.2 MGD (million gallons per day)2022
Monument SD (Tri-Lakes WWTF)Monument4.2 MGD (million gallons per day)2022
PARKER WWTPParker4 MGD (million gallons per day)2022
Silverthorne / Dillon JSASilverthorne4 MGD (million gallons per day)2022
Pagosa Area WSDPagosa Springs3.9 MGD (million gallons per day)2022
Arapahoe County WWAEnglewood3.6 MGD (million gallons per day)2022
LOUISVILLE STPLouisville3.4 MGD (million gallons per day)2022
DURANGO WWTPDurango3.28 MGD (million gallons per day)2022
SNOWMASS W&SP WWTPSnowmass Village3.2 MGD (million gallons per day)2022
AVON WWTFAvon3.2 MGD (million gallons per day)2022
MONTE VISTA WWTPMonte Vista3.09 MGD (million gallons per day)2022
ASPEN CONSOLIDATED WWTPAspen3 MGD (million gallons per day)2022
HILL-N-PARK STPEvans3 MGD (million gallons per day)2022
Boxelder Sanitation DistrictFort Collins3 MGD (million gallons per day)2022
Brighton, City ofBrighton3 MGD (million gallons per day)2022
WINDSOR WWTPWindsor2.8 MGD (million gallons per day)2022
FORT LUPTON WWTPFort Lupton2.75 MGD (million gallons per day)2022
SALIDA WWTPSalida2.7 MGD (million gallons per day)2022
STERLING WWTPSterling2.68 MGD (million gallons per day)2022
BRIGHTON WWTPBrighton2.63 MGD (million gallons per day)2022
ALAMOSA WWTPAlamosa2.57 MGD (million gallons per day)2022
Lower Fountain Metropolitan SDDFountain2.5 MGD (million gallons per day)2022
CLIFTON #2 WEST WWTPClifton2.5 MGD (million gallons per day)2022
FRASER WWTPFraser2.5 MGD (million gallons per day)2022
Widefield WSDFountain2.5 MGD (million gallons per day)2022
Craig, City ofCraig2.45 MGD (million gallons per day)2022
Delta WWTPDelta2.45 MGD (million gallons per day)2022
Security SDColorado Springs2.4 MGD (million gallons per day)2022
Glenwood Springs Regional WWTPGlenwood Springs2.34 MGD (million gallons per day)2022
Fruita, City ofFruita2.33 MGD (million gallons per day)2022
WHEAT RIDGE STPWheat Ridge2.3 MGD (million gallons per day)2022
FT MORGAN WWTPFort Morgan2.25 MGD (million gallons per day)2022
SUPERIOR WWTPLouisville2.2 MGD (million gallons per day)2022
SUPERIOR METRO DIST #1Louisville2.2 MGD (million gallons per day)2022
Telluride, Town ofTelluride2.1 MGD (million gallons per day)2022
Berthoud, Town ofBerthoud2 MGD (million gallons per day)2022
Trinidad, City ofTrinidad2 MGD (million gallons per day)2022
Frisco Sanitation DistrictFrisco2 MGD (million gallons per day)2022
BLACK HAWK / CENTRAL CITY WWTBlack Hawk2 MGD (million gallons per day)2022
LOCHBUIE LAGOONBrighton2 MGD (million gallons per day)2022
Rifle, City of Regional WWTFRifle2 MGD (million gallons per day)2022
THREE LAKES WSDGrand Lake2 MGD (million gallons per day)2022
Granby Sanitation DistrictGranby2 MGD (million gallons per day)2022
Castle Rock, Town ofCastle Rock2 MGD (million gallons per day)2022
Fountain SDFountain1.908 MGD (million gallons per day)2022
PUEBLO WEST WRF #1Pueblo1.8 MGD (million gallons per day)2022
Upper Monument Creek Regional WWTPColorado Springs1.75 MGD (million gallons per day)2022
Brush, City ofBrush1.68 MGD (million gallons per day)2022
LA JUNTA WWTPLa Junta1.65 MGD (million gallons per day)2022
Eagle, Town ofEagle1.65 MGD (million gallons per day)2022
Cortez Sanitation DistrictCortez1.57 MGD (million gallons per day)2022
Upper Blue Sanitation DistrictBreckenridge1.5 MGD (million gallons per day)2022
ESTES PARK WWTPEstes Park1.5 MGD (million gallons per day)2022
ERIE SWRFErie1.5 MGD (million gallons per day)2022
BUENA VISTA WWTPBuena Vista1.5 MGD (million gallons per day)2022
JOHNSTOWN STPJohnstown1.49 MGD (million gallons per day)2022
WILLOW CREEK WWTFGrand Lake1.3 MGD (million gallons per day)2022
Woodmen Hills Metropolitain DistricPeyton1.3 MGD (million gallons per day)2022
Mount CRESTED BUTTE WsdCrested Butte1.2 MGD (million gallons per day)2022
EVANS STPEvans1.2 MGD (million gallons per day)2022
Golden WWTPGolden1.2 MGD (million gallons per day)2022
Resource Colorado Water and SanitatDenver1.2 MGD (million gallons per day)2022
LAMAR WWTPLamar1.16 MGD (million gallons per day)2022
LEADVILLE WWTPLeadville1.15 MGD (million gallons per day)2022
Stonegate Village Metropolitan DistrictParker1.1 MGD (million gallons per day)2022
Copper Mountain Consolidated MDFrisco1.1 MGD (million gallons per day)2022
Sunset WWTPColorado Springs1.04 MGD (million gallons per day)2022
Las Animas, City of WWTPLas Animas1.03 MGD (million gallons per day)2022
Breckenridge SDBreckenridge1.028 MGD (million gallons per day)2022
ST CHARLES MESA WWTPPueblo1 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.