Public water system · UTAH18162
ActiveMountain Valley Water Co
At a glance
Mountain Valley Water Co (PWSID UTAH18162) is an active community water system in Salt Lake County, Utah. It reports serving 65 people through 10 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 8 violations for this system; none is health-based, and the most recent began in July 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
65
Service connections
10
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Mountain Valley Water Co compare with other water systems in Salt Lake County?
By EPA's size categories, Mountain Valley Water Co is a very small system (500 people or fewer). Salt Lake County has 77 active public water systems. Its population served is well below the county average of 19,034 people per system, and accounts for less than 0.1% of the 1,465,589 people reported by systems filed under the county. Across Utah, the 1,133 active systems average 3,458 people each. Nationally, the average active community water system reports serving 6,703 people, so Mountain Valley Water Co is well below that figure.
What does “community water system” mean?
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. Utah has 540 active community water systems, 48% of the state's 1,133 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 898 Utah systems (79%) list groundwater as their primary source.
Who owns and regulates Mountain Valley Water Co?
EPA lists Mountain Valley Water Co as privately owned. The UT state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 45 of the 77 active systems in Salt Lake County (58%) are also privately owned.
Does Mountain Valley Water Co have drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in July 2023. The violations listed here began between June 2007 and July 2023. By type: 7 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 8 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2023-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2007-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 8 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Mountain Valley Water Co: frequently asked questions
Who runs Mountain Valley Water Co?
Mountain Valley Water Co (PWSID UTAH18162) is a community water system privately owned. It is regulated by the UT state drinking water program.
How many people does Mountain Valley Water Co serve?
Mountain Valley Water Co reports serving 65 people through 10 service connections in Salt Lake County, Utah.
Where does Mountain Valley Water Co get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Mountain Valley Water Co have any drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in July 2023. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Mountain Valley Water Co's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 8 violations for this system; none is health-based, and the most recent began in July 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the UT state drinking water program.
Where can I find Mountain Valley Water Co's water quality report?
As a community water system, Mountain Valley Water Co must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Salt Lake County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Salt Lake City Water System | Salt Lake | 383,612 | Community | Surface water |
| Granger-Hunter Improvement District | Salt Lake | 121,083 | Community | Purchased surface water |
| West Jordan City Water System | Salt Lake | 117,025 | Community | Purchased surface water |
| Sandy City Water System | Salt Lake | 99,750 | Community | Purchased surface water |
| Jordan Valley Wcd | Salt Lake | 99,335 | Community | Surface water |
| South Jordan City | Salt Lake | 89,704 | Community | Purchased surface water |
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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, “Mountain Valley Water Co, PWSID UTAH18162, Utah”, https://aquacensus.com/water-systems/utah/mountain-valley-water-co-utah18162 (data as of October 1, 2026).