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Transient Non-Community Water System · PWS AZ0415062

Adot Ehrenberg Rest Area

Phoenix, Arizona 85007-3217 - drinking water served from groundwater sources to 806 people, tracked in EPA SDWIS and UCMR5.

806
People served
64
EPA violations
15
Health-based
Untested
UCMR5 result

The verdict

EPA records 64 drinking-water violations at Adot Ehrenberg Rest Area, 23% of them health-based - below the Arizona per-system average.

64
Total EPA violations on record
23%
Health-based (MCL / treatment failure)
806
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Adot Ehrenberg Rest Area

Adot Ehrenberg Rest Area is a state-owned transient non-community water system that delivers drinking water to 806 residents in Phoenix, Arizona (La Paz County) through 2 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 64 total violations for this system , of which 15 (23%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 45 monitoring and reporting violations are on file. The most recent violation on record dates to 2017.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 34 violations (MR). 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%).

Adot Ehrenberg Rest Area's 64 violations sit below 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
806
Total Violations
64
Health-Based Violations
15
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
State
Connections
2
County
La Paz
School/Daycare
No
MCL Violations
15
Monitoring Violations
45
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 34 2015
Coliform (TCR) MCL 15 2015
Nitrate MR 4 2017
Revised Total Coliform Rule RPT 2 2017
Barium MR 1 1989
Chromium MR 1 1989
Fluoride MR 1 1989
Mercury MR 1 1989
Arsenic MR 1 1986
Selenium MR 1 1989
Cadmium MR 1 1989

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 Adot Ehrenberg Rest Area.

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 AZ0415062 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 Adot Ehrenberg Rest Area 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
2017 Nitrate MR 4 SDWIS / AZ0415062 / 1040
2017 Revised Total Coliform Rule RPT 2 SDWIS / AZ0415062 / 8000
2015 Coliform (TCR) MR 34 SDWIS / AZ0415062 / 3100
2015 Coliform (TCR) MCL 15 SDWIS / AZ0415062 / 3100
1989 Barium MR 1 SDWIS / AZ0415062 / 1010
1989 Chromium MR 1 SDWIS / AZ0415062 / 1020
1989 Fluoride MR 1 SDWIS / AZ0415062 / 1025
1989 Mercury MR 1 SDWIS / AZ0415062 / 1035
1989 Selenium MR 1 SDWIS / AZ0415062 / 1045
1989 Cadmium MR 1 SDWIS / AZ0415062 / 1015
1986 Arsenic MR 1 SDWIS / AZ0415062 / 1005

How Adot Ehrenberg Rest Area Compares

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

Metric Adot Ehrenberg Rest Area Arizona avg Federal benchmark
Total violations 64 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 15 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 806 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 Adot Ehrenberg Rest Area water safe to drink? ▼
Adot Ehrenberg Rest Area (PWS ID: AZ0415062) has 64 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 806 people using Groundwater sources.
How many people does Adot Ehrenberg Rest Area serve? ▼
Adot Ehrenberg Rest Area serves 806 people in Phoenix, Arizona. It is a State-owned system using Groundwater water sources with 2 service connections.
What type of violations does Adot Ehrenberg Rest Area have? ▼
Adot Ehrenberg Rest Area has 64 total violations: 15 health-based violations (MCL exceedances or treatment failures), 45 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Adot Ehrenberg Rest Area water? ▼
No PFAS testing data is available for Adot Ehrenberg Rest Area under the EPA's UCMR5 monitoring program.
What water source does Adot Ehrenberg Rest Area use? ▼
Adot Ehrenberg Rest Area uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.