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

Wastewater treatment plants in United States · Wyoming

94 inventory records · HydroWASTE v1.0 / United States

Data years: 2012. The inventory date does not establish current operation.

94 results

Name	Native size	Year
CASPER WWTPHW:39645	65,169 population served	2012
CHEYENNE DRY CREEK WWTPHW:39653	38,653 population served	2012
GILLETTE WWTPHW:39651	32,716 population served	2012
Laramie WWTFHW:39646	31,294 population served	2012
ROCK SPRINGS WWTPHW:39647	23,036 population served	2012
CHEYENNE CROWCREEK WWTPHW:39649	21,813 population served	2012
JACKSON LAGOONHW:39722	21,134 population served	2012
SHERIDAN WWTPHW:39648	17,444 population served	2012
GREEN RIVER LAGOONHW:39716	12,515 population served	2012
EVANSTON WWTPHW:39719	12,359 population served	2012
RIVERTON WWTPHW:39689	11,150 population served	2012
CODY LAGOONHW:39706	9,520 population served	2012
RAWLINS LAGOONHW:39650	9,259 population served	2012
WORLAND LAGOONHW:39721	8,387 population served	2012
LANDER LAGOONHW:39688	7,487 population served	2012
TORRINGTON LAGOONSHW:39652	7,151 population served	2012
POWELL LAGOONHW:39708	6,314 population served	2012
DOUGLAS LAGOONHW:39656	6,263 population served	2012
Teton Village WWTPHW:39728	5,000 population served	2012
BUFFALO WWTPHW:39694	4,585 population served	2012
KEMMERER WWTPHW:39698	3,928 population served	2012
WHEATLAND LAGOONHW:39710	3,627 population served	2012
NEWCASTLE LAGOONHW:39654	3,532 population served	2012
THERMOPOLIS LAGOONHW:39695	3,463 population served	2012
GUERNSEY LAGOONHW:39662	3,102 population served	2012
GLENROCK LAGOONHW:39683	2,576 population served	2012
LOVELL LAGOONHW:39657	2,360 population served	2012
LYMAN LAGOONHW:39718	2,115 population served	2012
PINEDALE LAGOONHW:39714	2,030 population served	2012
AFTON LAGOONHW:39701	1,911 population served	2012
GREYBULL LAGOONHW:39658	1,847 population served	2012
WRIGHT LAGOONHW:39738	1,807 population served	2012
WAMSUTTER LAGOONHW:39670	1,751 population served	2012
SARATOGA LAGOONHW:39659	1,690 population served	2012
LUSK LAGOONHW:39704	1,567 population served	2012
MOUNTAIN VIEW LAGOONHW:39717	1,286 population served	2012
BASIN LAGOONHW:39677	1,285 population served	2012
SUNDANCE LAGOONHW:39685	1,182 population served	2012
PINEBLUFFS LAGOONHW:39661	1,129 population served	2012
UPTON LAGOONHW:39660	1,100 population served	2012
MARBLETON LAGOONHW:39713	1,094 population served	2012
MOORCROFT LAGOONHW:39684	1,009 population served	2012
DUBOIS LAGOONHW:39686	971 population served	2012
RANCHESTER LAGOONHW:39712	855 population served	2012
HANNA LAGOONHW:39681	841 population served	2012
ALPINE WWTPHW:39730	828 population served	2012
DAYTON LAGOONHW:39711	757 population served	2012
RELIANCE LAGOONHW:39725	714 population served	2012
SHOSHONI LAGOONHW:39690	649 population served	2012
BYRON LAGOONHW:39678	593 population served	2012
BIG PINEY LAGOONHW:39663	552 population served	2012
LA BARGE LAGOONHW:39699	551 population served	2012
COKEVILLE WWTPHW:39669	535 population served	2012
Bear River LagoonHW:39672	518 population served	2012
PINE HAVEN LAGOONHW:39727	490 population served	2012
LINGLE LAGOONHW:39692	468 population served	2012
TEN SLEEP LAGOONHW:39720	460 population served	2012
HUDSON LAGOONHW:39687	458 population served	2012
ENCAMPMENT LAGOONHW:39668	450 population served	2012
BAGGS LAGOONHW:39676	440 population served	2012
SINCLAIR LAGOONHW:39682	433 population served	2012
YODER LAGOONHW:39693	426 population served	2012
MIDWEST LAGOONHW:39703	404 population served	2012
HULETT LAGOONHW:39729	383 population served	2012
THAYNE LAGOONHW:39700	366 population served	2012
FT BRIDGER LAGOONHW:39723	345 population served	2012
SUPERIOR LAGOONHW:39671	336 population served	2012
MEETEETSE LAGOONHW:39707	327 population served	2012
BURNS LAGOONHW:39696	301 population served	2012
BURLINGTON LAGOONHW:39732	288 population served	2012
MEDICINE BOW LAGOONHW:39665	284 population served	2012
KAYCEE LAGOONHW:39666	263 population served	2012
ROCK RIVER LAGOONHW:39664	245 population served	2012
FT LARAMIE LAGOONHW:39691	230 population served	2012
CHUGWATER LAGOONHW:39731	212 population served	2012
OSAGE LAGOONHW:39655	208 population served	2012
GLENDO LAGOONHW:39709	205 population served	2012
Crestview Estates HOAHW:39733	200 population served	2012
EDGERTON LAGOONHW:39702	195 population served	2012
ELK MOUNTAIN LAGOONHW:39674	191 population served	2012
ALBIN LAGOONHW:39697	181 population served	2012
DEAVER LAGOONHW:39679	178 population served	2012
FRANNIE LAGOONHW:39673	157 population served	2012
CLEARMONT LAGOONHW:39675	142 population served	2012
GRANGER LAGOONHW:39715	139 population served	2012
MANDERSON WWTPHW:39680	114 population served	2012
DIXON LAGOONHW:39724	97 population served	2012
Opal LagoonHW:39726	96 population served	2012
MANVILLE LAGOONHW:39705	95 population served	2012
Bairoil North LagoonHW:39736	74 population served	2012
HARTVILLE WWTPHW:39667	62 population served	2012
RIVERSIDE LAGOONHW:39737	52 population served	2012
Atlantic City STPHW:39734	37 population served	2012
Bairoil South LagoonHW:39735	32 population served	2012

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.

US EPA · NPDES Permit Basics

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.