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Community Water System · PWS AZ0414391

Yuma West MHP

Yuma, Arizona 85365 - drinking water served from groundwater sources to 30 people, tracked in EPA SDWIS and UCMR5.

30
People served
156
EPA violations
8
Health-based
Untested
UCMR5 result

The verdict

EPA records 156 drinking-water violations at Yuma West MHP, 5% of them health-based - above the Arizona per-system average.

156
Total EPA violations on record
5%
Health-based (MCL / treatment failure)
30
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Yuma West MHP

Yuma West MHP is a public/private-owned community water system that delivers drinking water to 30 residents in Yuma, Arizona (Yuma County) through 14 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 156 total violations for this system , of which 8 (5%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 100 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Consumer Confidence Rule, recorded in 32 violations (Other). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Arizona, EPA tracks 1,493 public water systems serving 7,322,166 people, with 228,944 cumulative violations and 15,663 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 153.3 violations. Statewide, 145 of 152 UCMR5-tested systems have reported PFAS detections (95.4%).

Yuma West MHP's 156 violations sit above the Arizona average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
30
Total Violations
156
Health-Based Violations
8
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Public/Private
Connections
14
County
Yuma
School/Daycare
No
MCL Violations
2
Monitoring Violations
100
Treatment Tech Violations
6

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 32 2025
Coliform (TCR) MR 14 2009
Lead and Copper Rule MR 9 2024
E. COLI MR 6 2023
Nitrate MR 6 2002
Gross Alpha, Excl. Radon and U MR 4 1989
Revised Total Coliform Rule TT 4 2023
Public Notice Other 3 2024
Cadmium MR 3 1988
Arsenic MR 3 1988
Mercury MR 3 1988
Selenium MR 3 1988
Chromium MR 3 1988
Fluoride MR 3 1988
Barium MR 3 1988
DICHLOROMETHANE MR 2 2001
1,1-Dichloroethylene MR 2 2001
trans-1,2-Dichloroethylene MR 2 2001
1,1,1-Trichloroethane MR 2 2001
Trichloroethylene MR 2 2001
Benzene MR 2 2001
Ethylbenzene MR 2 2001
Revised Total Coliform Rule MON 2 2018
LEAD AND COPPER RULE REVISIONS TT 2 2024
cis-1,2-Dichloroethylene MR 2 2001
1,2-Dichloropropane MR 2 2001
Styrene MR 2 2001
CHLOROBENZENE MR 2 2001
1,1,2-Trichloroethane MR 2 2001
Toluene MR 2 2001

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Yuma West MHP.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID AZ0414391 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Arizona Drinking Water Authority

Arizona DEQ, Drinking Water Program is the primacy agency that licenses and inspects Yuma West MHP under EPA-delegated authority.

Open AZ regulator portal

Source: Arizona DEQ, Drinking Water Program

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Consumer Confidence Rule Other 32 SDWIS / AZ0414391 / 7000
2024 Lead and Copper Rule MR 9 SDWIS / AZ0414391 / 5000
2024 Public Notice Other 3 SDWIS / AZ0414391 / 7500
2024 LEAD AND COPPER RULE REVISIONS TT 2 SDWIS / AZ0414391 / 5200
2024 Revised Total Coliform Rule RPT 2 SDWIS / AZ0414391 / 8000
2024 LEAD AND COPPER RULE REVISIONS RPT 2 SDWIS / AZ0414391 / 5200
2023 E. COLI MR 6 SDWIS / AZ0414391 / 3014
2023 Revised Total Coliform Rule TT 4 SDWIS / AZ0414391 / 8000
2018 Revised Total Coliform Rule MON 2 SDWIS / AZ0414391 / 8000
2009 Coliform (TCR) MR 14 SDWIS / AZ0414391 / 3100
2009 Coliform (TCR) MCL 2 SDWIS / AZ0414391 / 3100
2002 Nitrate MR 6 SDWIS / AZ0414391 / 1040
2001 DICHLOROMETHANE MR 2 SDWIS / AZ0414391 / 2964
2001 1,1-Dichloroethylene MR 2 SDWIS / AZ0414391 / 2977
2001 trans-1,2-Dichloroethylene MR 2 SDWIS / AZ0414391 / 2979

How Yuma West MHP Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Yuma West MHP Arizona avg Federal benchmark
Total violations 156 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 8 10.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 95.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 30 4,904 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,493 regulated public water systems in Arizona.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Yuma West MHP water safe to drink? ▼
Yuma West MHP (PWS ID: AZ0414391) has 156 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 30 people using Groundwater sources.
How many people does Yuma West MHP serve? ▼
Yuma West MHP serves 30 people in Yuma, Arizona. It is a Public/Private-owned system using Groundwater water sources with 14 service connections.
What type of violations does Yuma West MHP have? ▼
Yuma West MHP has 156 total violations: 8 health-based violations (MCL exceedances or treatment failures), 100 monitoring/reporting violations, and 6 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Yuma West MHP water? ▼
No PFAS testing data is available for Yuma West MHP under the EPA's UCMR5 monitoring program.
What water source does Yuma West MHP use? ▼
Yuma West MHP uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.