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Community Water System · PWS AZ0415058

Epcor - Holiday Harbor

El Mirage, Arizona 85335 - drinking water served from surface water sources to 559 people, tracked in EPA SDWIS and UCMR5.

559
People served
380
EPA violations
19
Health-based
Untested
UCMR5 result

The verdict

EPA records 380 drinking-water violations at Epcor - Holiday Harbor, 5% of them health-based - above the Arizona per-system average.

380
Total EPA violations on record
5%
Health-based (MCL / treatment failure)
559
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Epcor - Holiday Harbor

Epcor - Holiday Harbor is a private-owned community water system that delivers drinking water to 559 residents in El Mirage, Arizona (La Paz County) through 254 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 380 total violations for this system , of which 19 (5%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 289 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Chlorine, recorded in 27 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%).

Epcor - Holiday Harbor's 380 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
559
Total Violations
380
Health-Based Violations
19
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
254
County
La Paz
School/Daycare
No
MCL Violations
0
Monitoring Violations
289
Treatment Tech Violations
19

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 27 2020
Coliform (TCR) MR 24 2015
Interim Enhanced Surface Water Treatment Rule MR 18 2015
TTHM MR 17 2021
Total Haloacetic Acids (HAA5) MR 16 2021
Consumer Confidence Rule Other 16 2015
Lead and Copper Rule MR 15 2023
Surface Water Treatment Rule MR 12 2019
Nitrate MR 11 2004
Surface Water Treatment Rule TT 10 2020
Interim Enhanced Surface Water Treatment Rule TT 9 2020
DICHLOROMETHANE MR 9 2001
Toluene MR 9 2001
Ethylbenzene MR 9 2001
Public Notice Other 8 2021
Revised Total Coliform Rule MON 7 2019
Selenium MR 6 1998
Arsenic MR 6 1998
Mercury MR 6 1998
E. COLI MR 6 2018
Barium MR 6 1998
Chromium MR 6 1998
Fluoride MR 6 1998
Cadmium MR 6 1998
Endrin MR 4 2001
2,4-D MR 3 1998
2,4,5-TP MR 3 1998
BHC-GAMMA MR 3 1998
Methoxychlor MR 3 1998
Toxaphene MR 3 1998

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 Epcor - Holiday Harbor.

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 AZ0415058 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 Epcor - Holiday Harbor 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
2023 Lead and Copper Rule MR 15 SDWIS / AZ0415058 / 5000
2021 TTHM MR 17 SDWIS / AZ0415058 / 2950
2021 Total Haloacetic Acids (HAA5) MR 16 SDWIS / AZ0415058 / 2456
2021 Public Notice Other 8 SDWIS / AZ0415058 / 7500
2020 Chlorine MR 27 SDWIS / AZ0415058 / 0999
2020 Surface Water Treatment Rule TT 10 SDWIS / AZ0415058 / 0200
2020 Interim Enhanced Surface Water Treatment Rule TT 9 SDWIS / AZ0415058 / 0300
2019 Surface Water Treatment Rule MR 12 SDWIS / AZ0415058 / 0200
2019 Revised Total Coliform Rule MON 7 SDWIS / AZ0415058 / 8000
2018 E. COLI MR 6 SDWIS / AZ0415058 / 3014
2015 Coliform (TCR) MR 24 SDWIS / AZ0415058 / 3100
2015 Interim Enhanced Surface Water Treatment Rule MR 18 SDWIS / AZ0415058 / 0300
2015 Consumer Confidence Rule Other 16 SDWIS / AZ0415058 / 7000
2004 Nitrate MR 11 SDWIS / AZ0415058 / 1040
2001 DICHLOROMETHANE MR 9 SDWIS / AZ0415058 / 2964

How Epcor - Holiday Harbor Compares

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

Metric Epcor - Holiday Harbor Arizona avg Federal benchmark
Total violations 380 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 19 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 559 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 Epcor - Holiday Harbor water safe to drink? ▼
Epcor - Holiday Harbor (PWS ID: AZ0415058) has 380 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 559 people using Surface Water sources.
How many people does Epcor - Holiday Harbor serve? ▼
Epcor - Holiday Harbor serves 559 people in El Mirage, Arizona. It is a Private-owned system using Surface Water water sources with 254 service connections.
What type of violations does Epcor - Holiday Harbor have? ▼
Epcor - Holiday Harbor has 380 total violations: 19 health-based violations (MCL exceedances or treatment failures), 289 monitoring/reporting violations, and 19 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Epcor - Holiday Harbor water? ▼
No PFAS testing data is available for Epcor - Holiday Harbor under the EPA's UCMR5 monitoring program.
What water source does Epcor - Holiday Harbor use? ▼
Epcor - Holiday Harbor uses Surface Water 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.