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Tooele County, Utah — public water systems

At a glance

34 active public water systems are filed under Tooele County, Utah in EPA's SDWIS records, together reporting 75,542 people served. The largest is Tooele City Water System, which reports serving 37,100 people. 13 are community water systems serving people where they live; the other 21 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

34

Population served

75.5K

Community systems

13

Groundwater share

94.1%

How does Tooele County compare with other Utah counties?

Tooele County has the 12th-most active public water systems among the 78 counties listed for active Utah systems in EPA records; among the 35 with 3 or more systems, the median has 26. Its systems report 75,542 people served in total, the 7th-largest county figure in the state and 1.9% of the statewide total. The average system here reports serving 2,222 people, about 36% below the Utah average of 3,458. 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 Tooele County's drinking water come from?

By primary water source, Tooele County's active systems draw on groundwater (27, 79%), purchased groundwater (5, 15%) and surface water (2, 5.9%). Overall, 94% rely mainly on groundwater (including purchased groundwater) and 5.9% on surface water, compared with 87% and 13% across Utah. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Tooele City Water System, draws primarily on groundwater.

What kinds of water systems operate in Tooele County?

Tooele County's active systems break down as 13 community systems (38%), 9 non-transient non-community systems (26%) and 12 transient non-community systems (35%). 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 private (59%), local government (18%), federal government (18%) and state government (5.9%).

Water systems in Tooele County

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Active public water systems in Tooele County, Utah
#Water systemCountyPopulation servedTypeSource
1Tooele City Water SystemTooele37,100CommunityGroundwater
2Grantsville CityTooele16,284CommunityGroundwater
3Stansbury Park Improvement DistrictTooele9,839CommunityGroundwater
4Oquirrh Mountain Water CoTooele2,500CommunityGroundwater
5Wendover City Water SystemTooele1,525CommunitySurface water
6Erda Acres Water CoTooele1,150CommunityGroundwater
7Dugway - Ditto Tech CenterTooele920Non-transient non-communityGroundwater
8South Rim Water SystemTooele834CommunityGroundwater
9Lincoln Culinary Water AssnTooele660CommunityGroundwater
10Stockton Town Water SystemTooele620CommunitySurface water
11Erda WardTooele600Transient non-communityGroundwater
12Dugway - English VillageTooele600CommunityGroundwater
13Tooele Army Depot NorthTooele541Non-transient non-communityGroundwater
14Vernon Waterworks Special Service DistTooele302CommunityGroundwater
15Clean Harbors - AragoniteTooele250Non-transient non-communityGroundwater
16Erda Drive in, LLCTooele209Transient non-communityGroundwater
17Camp Wapiti (Elks)Tooele200Transient non-communityPurchased groundwater
18Dugway WardTooele175Transient non-communityGroundwater
19Rush Valley LDS ChurchTooele150Transient non-communityGroundwater
20Morton Salt Inc.Tooele150Non-transient non-communityPurchased groundwater
21Simpson Springs CampgroundTooele150Transient non-communityGroundwater
22Ophir Canyon Water AssociationTooele108CommunityGroundwater
23Tooele Army Depot-Deseret ChemicalTooele100Non-transient non-communityGroundwater
24Dugway - Carr FacilityTooele100Transient non-communityGroundwater
25Energy SolutionsTooele96Non-transient non-communityPurchased groundwater
26Utah Youth VillageTooele90Non-transient non-communityGroundwater
27Silver Spur RanchosTooele80CommunityGroundwater
28Last Chance Ski RanchTooele41Transient non-communityGroundwater
29Clean Harbors - Grassy MtnTooele32Non-transient non-communityPurchased groundwater
30Grassy Mountain Rest StopTooele31Transient non-communityGroundwater
31Delle Auto Truck StopTooele29Transient non-communityGroundwater
32Ibapah SchoolTooele26Non-transient non-communityGroundwater
33Ibapah LDS ChurchTooele25Transient non-communityGroundwater
34Salt Flats Highway Rest StopTooele25Transient non-communityPurchased groundwater

Tooele County water systems: frequently asked questions

How many public water systems are in Tooele County, Utah?

EPA's SDWIS records file 34 active public water systems under Tooele County, Utah: 13 community systems (38%), 9 non-transient non-community systems (26%) and 12 transient non-community systems (35%).

Who supplies drinking water in Tooele County, UT?

The largest community water systems filed under Tooele County are Tooele City Water System (37,100 people served), Grantsville City (16,284 people served) and Stansbury Park Improvement District (9,839 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 Tooele County's drinking water come from groundwater or surface water?

Of the 34 active public water systems in Tooele County, 94% draw mainly on groundwater and 5.9% on surface water, counting purchased supplies. The largest system, Tooele City Water System, uses groundwater.

Where can I find a water quality report for Tooele 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. 13 community systems are filed under Tooele 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 Tooele 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 Utah 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 Tooele County, Utah”, https://aquacensus.com/water-systems/utah/tooele (data as of October 1, 2026).