Public water system · AZ0415509
ActiveQ Mountain Vista MHP
At a glance
Q Mountain Vista MHP (PWSID AZ0415509) is an active community water system in La Paz County, Arizona. It reports serving 440 people through 220 service connections. Its primary water source is purchased groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
440
Service connections
220
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Q Mountain Vista MHP compare with other water systems in La Paz County?
By EPA's size categories, Q Mountain Vista MHP is a very small system (500 people or fewer). La Paz County has 84 active public water systems. Its population served is about 21% above the county average of 365 people per system, and accounts for 1.4% of the 30,640 people reported by systems filed under the county. Across Arizona, the 1,769 active systems average 4,369 people each. Nationally, the average active community water system reports serving 6,703 people, so Q Mountain Vista 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. Arizona has 936 active community water systems, 53% of the state's 1,769 active systems. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 71 Arizona systems (4%) list purchased groundwater as their primary source.
Who owns and regulates Q Mountain Vista MHP?
EPA lists Q Mountain Vista MHP as privately owned. The AZ state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 40 of the 84 active systems in La Paz County (48%) are also privately owned.
Does Q Mountain Vista MHP have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2017. The violations listed here began between October 2011 and October 2017. By type: 11 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Chlorine (7 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2017-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2014-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2014-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2013-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2012-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2012-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2011-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
The 12 most recent 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.
Q Mountain Vista MHP: frequently asked questions
Who runs Q Mountain Vista MHP?
Q Mountain Vista MHP (PWSID AZ0415509) is a community water system privately owned. It is regulated by the AZ state drinking water program.
How many people does Q Mountain Vista MHP serve?
Q Mountain Vista MHP reports serving 440 people through 220 service connections in La Paz County, Arizona.
Where does Q Mountain Vista MHP get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Q Mountain Vista MHP have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2017. 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 Q Mountain Vista 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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2017. For current results, consult the system's annual water quality report, EPA ECHO, or the AZ state drinking water program.
Where can I find Q Mountain Vista MHP's water quality report?
As a community water system, Q Mountain Vista 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.
Other water systems in La Paz County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Quartzsite Town of | La Paz | 2,761 | Community | Groundwater |
| Blm Laposa Ltva | La Paz | 2,500 | Transient non-community | Groundwater |
| Epcor - Lakeside | La Paz | 1,775 | Community | Surface water |
| Cs Harrisburg Utility Company | La Paz | 1,759 | Community | Groundwater |
| Epcor - Moovalya Keys | La Paz | 1,298 | Community | Surface water |
| Cs Q Mountain Water Company | La Paz | 1,224 | Community | Groundwater |
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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, “Q Mountain Vista MHP, PWSID AZ0415509, Arizona”, https://aquacensus.com/water-systems/arizona/q-mountain-vista-mhp-az0415509 (data as of October 1, 2026).