Public water system · CO0139838
ActiveWestern Hills MHP
At a glance
Western Hills MHP (PWSID CO0139838) is an active community water system in Mesa County, Nevada. It reports serving 213 people through 132 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
213
Service connections
132
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Western Hills MHP compare with other water systems in Mesa County?
By EPA's size categories, Western Hills MHP is a very small system (500 people or fewer). Mesa County has 1 active public water system, and Western Hills MHP is the largest of them by population served. Its population served is roughly in line with the county average of 213 people per system, and accounts for 100% of the 213 people reported by systems filed under the county. Across Nevada, the 643 active systems average 5,508 people each. Nationally, the average active community water system reports serving 6,703 people, so Western Hills MHP 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. Nevada has 224 active community water systems, 35% of the state's 643 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 60 Nevada systems (9.3%) list purchased surface water as their primary source.
Who owns and regulates Western Hills MHP?
EPA lists Western Hills MHP as privately owned. The CO state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 1 of the 1 active systems in Mesa County (100%) are also privately owned.
Does Western Hills MHP have drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in July 2025. The violations listed here began between October 2024 and July 2025. By type: 3 monitoring and reporting and 1 required treatment not met. The contaminants or rules involved are Lead and Copper Rule, Stage 1 Disinfectants and Disinfection Byproducts Rule, Surface Water Treatment Rule and Chloramine. EPA lists 3 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2025-01-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2024-12-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2024-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chloraminecode 1006 | No | Resolved |
All 4 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.
Western Hills MHP: frequently asked questions
Who runs Western Hills MHP?
Western Hills MHP (PWSID CO0139838) is a community water system privately owned. It is regulated by the CO state drinking water program.
How many people does Western Hills MHP serve?
Western Hills MHP reports serving 213 people through 132 service connections in Mesa County, Nevada.
Where does Western Hills MHP get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Western Hills MHP have any drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in July 2025. 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 Western Hills MHP'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 4 violations for this system; 1 is health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Western Hills MHP's water quality report?
As a community water system, Western Hills MHP 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.
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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, “Western Hills MHP, PWSID CO0139838, Nevada”, https://aquacensus.com/water-systems/nevada/western-hills-mhp-co0139838 (data as of October 1, 2026).