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Uinta County, Wyoming — public water systems

At a glance

12 active public water systems are filed under Uinta County, Wyoming in EPA's SDWIS records, together reporting 20,419 people served. The largest is City of Evanston, which reports serving 11,727 people. 6 are community water systems serving people where they live; the other 6 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

12

Population served

20.4K

Community systems

6

Groundwater share

58.3%

How does Uinta County compare with other Wyoming counties?

Uinta County has the 20th-most active public water systems among the 33 counties listed for active Wyoming systems in EPA records; among the 23 with 3 or more systems, the median has 27. Its systems report 20,419 people served in total, the 10th-largest county figure in the state and 3.1% of the statewide total. The average system here reports serving 1,702 people, about twice the Wyoming average of 838. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Uinta County's drinking water come from?

By primary water source, Uinta County's active systems draw on groundwater (6, 50%), surface water (3, 25%), purchased surface water (2, 17%) and groundwater under influence of surface water (1, 8.3%). Overall, 58% rely mainly on groundwater (including purchased groundwater) and 42% on surface water, compared with 83% and 17% across Wyoming. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, City of Evanston, draws primarily on surface water.

What kinds of water systems operate in Uinta County?

Uinta County's active systems break down as 6 community systems (50%), 2 non-transient non-community systems (17%) and 4 transient non-community systems (33%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as local government (42%), private (42%), public/private partnership (8.3%) and state government (8.3%).

Water systems in Uinta County

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Active public water systems in Uinta County, Wyoming
#Water systemCountyPopulation servedTypeSource
1Evanston, City ofUinta11,727CommunitySurface water
2Lyman, Town ofUinta2,203CommunityGroundwater under influence of surface water
3Bridger Valley Joint Powers BoardUinta1,728CommunitySurface water
4Mountain View, Town ofUinta1,250CommunityPurchased surface water
5Bear River Regional Joint PowersUinta1,200CommunityPurchased surface water
6Wy Dot-Evanston Port of EntryUinta1,000Transient non-communityGroundwater
7Travel Centers of America-Ft. BridgerUinta570Non-transient non-communityGroundwater
8Lindley Park, LLCUinta362CommunityGroundwater
9Lyman Koa CampgroundUinta154Transient non-communityGroundwater
10Uinta County Youth CampUinta100Transient non-communityGroundwater
11Hilcorp Carter Creek Gas PlantUinta80Non-transient non-communitySurface water
12Hilliard Ward (LDS Church)Uinta45Transient non-communityGroundwater

Uinta County water systems: frequently asked questions

How many public water systems are in Uinta County, Wyoming?

EPA's SDWIS records file 12 active public water systems under Uinta County, Wyoming: 6 community systems (50%), 2 non-transient non-community systems (17%) and 4 transient non-community systems (33%).

Who supplies drinking water in Uinta County, WY?

The largest community water systems filed under Uinta County are City of Evanston (11,727 people served), Town of Lyman (2,203 people served) and Bridger Valley Joint Powers Board (1,728 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does Uinta County's drinking water come from groundwater or surface water?

Of the 12 active public water systems in Uinta County, 58% draw mainly on groundwater and 42% on surface water, counting purchased supplies. The largest system, City of Evanston, uses surface water.

Where can I find a water quality report for Uinta County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 6 community systems are filed under Uinta County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in Uinta County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More Wyoming water systems

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Public water systems in Uinta County, Wyoming”, https://aquacensus.com/water-systems/wyoming/uinta (data as of October 1, 2026).