Tapcensus

Wyoming

Fremont County drinking water quality

61 active public water systems serve 26,380 people in Fremont County. 23 are compliant, 38 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 7 carry a health flag.

Active systems 61 21 community systems
People served 26K by public water systems
Systems with violations 38 62% of active systems, past 3 years
Serious violators 1 7 systems carry a health flag

Needs attention

Line Shack Lodge WY5601479 · Dubois · Transient non-community system · Serves 150 1 rule violated in the past three years. Unresolved: Revised Total Coliform Rule (RTCR).
Gardens North Homeowners Association WY5600774 · Riverton · Community water system · Serves 300 2 rules violated in the past three years. Unresolved: Consumer Confidence Rule (CCR) and Groundwater Rule (GWR).
Pavillion, Town of WY5600039 · Pavillion · Community water system · Serves 230 2 rules violated in the past three years. Unresolved: Groundwater Rule (GWR) and Revised Total Coliform Rule (RTCR).
Sunridge Estates WY5601225 · Riverton · Community water system · Serves 220 3 rules violated in the past three years. Unresolved: Consumer Confidence Rule (CCR) and Groundwater Rule (GWR).
South Pass City Historical Site WY5601137 · South Pass City · Transient non-community system · Serves 131 1 rule violated in the past three years. Unresolved: Revised Total Coliform Rule (RTCR).
Whiskey Mountain Conservation Camp WY5601707 · Transient non-community system · Serves 96 1 rule violated in the past three years. Unresolved: Revised Total Coliform Rule (RTCR).
Paintbrush Motel WY5601452 · Riverton · Transient non-community system · Serves 40 1 rule violated in the past three years. Unresolved: Groundwater Rule (GWR).

Community water systems

21 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Riverton, City of
Riverton 		10,330 3 0
Lander, City of
Lander 		7,615 1 0
Dubois, Town of
Dubois 		1,822 1 0
Shoshoni, Town of
Shoshoni 		515 1 0
Hudson, Town of
Hudson 		460 2 2
Gardens North Homeowners Association
Riverton 		300 2 2
Pavillion, Town of
Pavillion 		230 2 1
Sunridge Estates
Riverton 		220 3 2
B&k Mobile Home Park
Riverton 		200 4 1
Jade MHC
Riverton 		200 3 1
Mountain View Acres
Riverton 		165 8 0
First Fike Subdivision
Riverton 		150 2 0
A & J Mobile Home Park
Riverton 		100 3 0
Raintree Estates
Riverton 		100 0 0
Redd Fox Park HOA
Lander 		75 0 0
Warm Springs Water District
Dubois 		68 1 0
Farview Water and Sewer District
Riverton 		60 5 1
Juniper Park Water Association
Lander 		42 0 0
Jeffrey City Water & Sewer District
Riverton 		40 4 2
Pleasant Valley Water Association
Lander 		35 0 0
Second Fike Subdivision
Riverton 		34 2 1
Non-community systems (40: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
WY Dot-Sweetwater Rest Area
Riverton 		500 0 0
Wydot-South Pass Rest Area
Lander 		401 1 0
Teton Valley Ranch Camp-Dubois
Jackson 		250 0 0
Mhvc Sixth Crossing Ranch RV Park
 200 0 0
Line Shack Lodge
Dubois 		150 1 1
South Pass City Historical Site
South Pass City 		131 1 1
Crooked Creek Guest Ranch
Dubois 		123 3 0
Mhvc Sage CG
Afton 		120 0 0
Miners Grubstake, LLC
Atlantic City 		103 1 0
Rock Creek Hollow Lds Church CG
Lander 		100 1 0
Shoshone Nf-Falls CG
Dubois 		100 1 0
Longhorn RV and Motel
Dubois 		96 2 0
Whiskey Mountain Conservation Camp
 96 1 1
Boysen ST PK Hdqrts
Shoshoni 		90 0 0
Alpine Science Institute
Lander 		85 3 1
Twin Pines RV Park
Lander 		77 0 0
C M Ranch LLC
Dubois 		75 0 0
Spence Foundation Thunderhead Ranch
Dubois 		72 0 0
Fremont County Youth Camp
Lander 		70 1 0
Brooks Lake Lodge
Dubois 		67 2 0
Triangle C Ranch
Dubois 		67 2 0
Atlantic City Mercantile
Atlantic City 		52 0 0
Lava Mountain Lodge
Dubois 		52 2 0
Lazy L and B Ranch
Dubois 		50 1 0
Bitterroot Ranch
Dubois 		47 0 0
Lost Cabin Gas Plant (contango Res, Llc)
Lysite 		45 0 0
Paintbrush Motel
Riverton 		40 1 1
Absaroka Ranch
Dubois 		35 1 0
Ring Lake Ranch
Dubois 		34 1 0
Kinnear Store
Kinnear 		31 2 1
Boysen State Park-Lower Wind River
Shoshoni 		30 0 0
Boysen State Park-Upper Wind River
Shoshoni 		30 0 0
Blm-Atlantic City CG
Atlantic City 		25 0 0
Blm-Big Atlantic Gulch CG
Atlantic City 		25 0 0
Blm-Cottonwood CG
Lander 		25 0 0
Boysen ST PK Cottonwood
Shoshoni 		25 0 0
Boysen ST PK Tough Creek #2
Shoshoni 		25 1 0
Bsp Fremont Bay CG
Shoshoni 		25 0 0
Sinks Canyon Campground
Lander 		25 0 0
Sinks Canyon State Pk-Popo Agie CG
Lander 		25 1 0
Inactive systems (17, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Wyoming records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.