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

Wastewater treatment plants in United States · Wyoming

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97 inventory records · EPA Clean Watersheds Needs Survey 2022

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

97 results

CompareNameNative sizeYear
CHEYENNE DRY CREEK WWTPCheyenne10.5 MGD (million gallons per day)2022
CASPER WWTPCasper10 MGD (million gallons per day)2022
CHEYENNE CROWCREEK WWTPCheyenne6.5 MGD (million gallons per day)2022
Laramie WWTFLaramie6 MGD (million gallons per day)2022
GILLETTE WWTPGillette5.12 MGD (million gallons per day)2022
JACKSON LAGOONJackson5 MGD (million gallons per day)2022
POWELL LAGOONPowell4.96 MGD (million gallons per day)2022
RIVERTON WWTPRiverton4.9 MGD (million gallons per day)2022
SHERIDAN WWTPSheridan4.4 MGD (million gallons per day)2022
EVANSTON WWTPEvanston2.9 MGD (million gallons per day)2022
ROCK SPRINGS WWTPRock Springs2.7 MGD (million gallons per day)2022
RAWLINS LAGOONRawlins2.5 MGD (million gallons per day)2022
WORLAND LAGOONWorland1.95 MGD (million gallons per day)2022
BUFFALO WWTPBuffalo1.8 MGD (million gallons per day)2022
DOUGLAS LAGOONDouglas1.5 MGD (million gallons per day)2022
CODY LAGOONCody1.5 MGD (million gallons per day)2022
PINEDALE LAGOONPinedale1.5 MGD (million gallons per day)2022
GREEN RIVER LAGOONGreen River1.5 MGD (million gallons per day)2022
TORRINGTON LAGOONSTorrington1.4 MGD (million gallons per day)2022
LANDER LAGOONLander1 MGD (million gallons per day)2022
Teton Village WWTPTeton Village0.9 MGD (million gallons per day)2022
SARATOGA LAGOONSaratoga0.8 MGD (million gallons per day)2022
THERMOPOLIS LAGOONThermopolis0.8 MGD (million gallons per day)2022
KEMMERER WWTPKemmerer0.75 MGD (million gallons per day)2022
GUERNSEY LAGOONHartville0.63 MGD (million gallons per day)2022
LYMAN LAGOONFort Bridger0.6 MGD (million gallons per day)2022
LOVELL LAGOONLovell0.58 MGD (million gallons per day)2022
WHEATLAND LAGOONWheatland0.55 MGD (million gallons per day)2022
NEWCASTLE LAGOONNewcastle0.5 MGD (million gallons per day)2022
GREYBULL LAGOONGreybull0.5 MGD (million gallons per day)2022
BYRON LAGOONByron0.5 MGD (million gallons per day)2022
WRIGHT LAGOONWright0.5 MGD (million gallons per day)2022
DUBOIS LAGOONDubois0.4 MGD (million gallons per day)2022
ALPINE WWTPAlpine0.4 MGD (million gallons per day)2022
GLENROCK LAGOONGlenrock0.35 MGD (million gallons per day)2022
LA BARGE LAGOONLa Barge0.33 MGD (million gallons per day)2022
MARBLETON LAGOONBig Piney0.3 MGD (million gallons per day)2022
MOUNTAIN VIEW LAGOONMountain View0.3 MGD (million gallons per day)2022
FT. BRIDGER LAGOONFort Bridger0.3 MGD (million gallons per day)2022
LUSK LAGOONLusk0.28 MGD (million gallons per day)2022
BIG PINEY LAGOONBig Piney0.279 MGD (million gallons per day)2022
UPTON LAGOONUpton0.24 MGD (million gallons per day)2022
DAYTON LAGOONDayton0.2 MGD (million gallons per day)2022
TEN SLEEP LAGOONTen Sleep0.2 MGD (million gallons per day)2022
RANCHESTER LAGOONRanchester0.179 MGD (million gallons per day)2022
Bear River LagoonEvanston0.175 MGD (million gallons per day)2022
WAMSUTTER LAGOONWamsutter0.15 MGD (million gallons per day)2022
HUDSON LAGOONLander0.15 MGD (million gallons per day)2022
AFTON LAGOONAfton0.15 MGD (million gallons per day)2022
THAYNE LAGOONThayne0.145 MGD (million gallons per day)2022
PINE HAVEN LAGOONMoorcroft0.141 MGD (million gallons per day)2022
Aspens Pines WSDWilson0.14 MGD (million gallons per day)2022
BAGGS LAGOONBaggs0.14 MGD (million gallons per day)2022
BASIN LAGOONBasin0.14 MGD (million gallons per day)2022
ENCAMPMENT LAGOONEncampment0.12 MGD (million gallons per day)2022
MEDICINE BOW LAGOONMedicine Bow0.11 MGD (million gallons per day)2022
PINEBLUFFS LAGOONPine Bluffs0.1 MGD (million gallons per day)2022
KAYCEE LAGOONKaycee0.1 MGD (million gallons per day)2022
HANNA LAGOONHanna0.1 MGD (million gallons per day)2022
MOORCROFT LAGOONMoorcroft0.1 MGD (million gallons per day)2022
SUNDANCE LAGOONSundance0.1 MGD (million gallons per day)2022
GRANGER LAGOONGreen River0.1 MGD (million gallons per day)2022
SINCLAIR LAGOONRawlins0.07 MGD (million gallons per day)2022
HULETT LAGOONHulett0.07 MGD (million gallons per day)2022
SHOSHONI LAGOONShoshoni0.064 MGD (million gallons per day)2022
LINGLE LAGOONTorrington0.06 MGD (million gallons per day)2022
ROCK RIVER LAGOONRock River0.05 MGD (million gallons per day)2022
COKEVILLE WWTPCokeville0.05 MGD (million gallons per day)2022
SUPERIOR LAGOONSuperior0.05 MGD (million gallons per day)2022
DEAVER LAGOONDeaver0.05 MGD (million gallons per day)2022
FT LARAMIE LAGOONFort Laramie0.05 MGD (million gallons per day)2022
MEETEETSE LAGOONMeeteetse0.05 MGD (million gallons per day)2022
DIXON LAGOONDixon0.05 MGD (million gallons per day)2022
RELIANCE LAGOONReliance0.05 MGD (million gallons per day)2022
ELK MOUNTAIN LAGOONElk Mountain0.04 MGD (million gallons per day)2022
CLEARMONT LAGOONClearmont0.04 MGD (million gallons per day)2022
YODER LAGOONYoder0.04 MGD (million gallons per day)2022
BURNS LAGOONBurns0.04 MGD (million gallons per day)2022
CENTENNIAL LAGOONCentennial0.04 MGD (million gallons per day)2022
BURLINGTON LAGOONBurlington0.035 MGD (million gallons per day)2022
PAVILLION LAGOONPavillion0.025 MGD (million gallons per day)2022
MIDWEST LAGOONMidwest0.025 MGD (million gallons per day)2022
GLENDO LAGOONGlendo0.025 MGD (million gallons per day)2022
CHUGWATER LAGOONChugwater0.025 MGD (million gallons per day)2022
FRANNIE LAGOONPowell0.02 MGD (million gallons per day)2022
MANDERSON WWTPManderson0.02 MGD (million gallons per day)2022
ALBIN LAGOONAlbin0.02 MGD (million gallons per day)2022
OSAGE LAGOONOsage0.015 MGD (million gallons per day)2022
RIVERSIDE LAGOONEncampment0.015 MGD (million gallons per day)2022
HARTVILLE WWTPHartville0.012 MGD (million gallons per day)2022
EDGERTON LAGOONMidwest0.012 MGD (million gallons per day)2022
MANVILLE LAGOONManville0.01 MGD (million gallons per day)2022
Opal LagoonKemmerer0.01 MGD (million gallons per day)2022
Bairoil - North LagoonBairoil0.009 MGD (million gallons per day)2022
Atlantic City STPLander0.007 MGD (million gallons per day)2022
Bairoil - South LagoonBairoil0.007 MGD (million gallons per day)2022
LaGrange, Town ofLagrangeNot reported 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.