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EPCOR - RIO LINDO

PWS ID: AZ0415040 · EL MIRAGE, Arizona 85335

EPCOR - RIO LINDO serves 79 people in EL MIRAGE, Arizona using Surface Water water sources. It has 279 recorded EPA violations, including 23 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: EPCOR - RIO LINDO

EPCOR - RIO LINDO is a private-owned community water system that delivers drinking water to 79 residents in EL MIRAGE, Arizona (La Paz County) through 36 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 279 total violations for this system , of which 23 (8%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 206 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Chlorine, recorded in 25 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. EPCOR - RIO LINDO's 279 violations sit above the Arizona average. Statewide, 145 of 152 UCMR5-tested systems have reported PFAS detections (95.4%). 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
79
Total Violations
279
Health-Based Violations
23
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
36
County
La Paz
School/Daycare
No
MCL Violations
1
Monitoring Violations
206
Treatment Tech Violations
22

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 25 2020
Coliform (TCR) MR 22 2014
Interim Enhanced Surface Water Treatment Rule MR 20 2020
Consumer Confidence Rule Other 16 2015
Lead and Copper Rule MR 15 2021
Interim Enhanced Surface Water Treatment Rule TT 12 2020
Surface Water Treatment Rule MR 12 2020
Surface Water Treatment Rule TT 10 2020
Xylenes, Total MR 9 2001
DICHLOROMETHANE MR 9 2001
Benzene MR 9 2001
Nitrate MR 7 2004
E. COLI MR 6 2018
Public Notice Other 6 2021
Total Haloacetic Acids (HAA5) MR 4 2013
TTHM MR 4 2013
Revised Total Coliform Rule MON 4 2018
Endothall MR 2 2001
Thallium, Total MR 1 1998
Selenium MR 1 1998
TTHM MCL 1 2005
p-Dichlorobenzene MR 1 1998
trans-1,2-Dichloroethylene MR 1 1998
1,1,1-Trichloroethane MR 1 1998
Carbon tetrachloride MR 1 1998
Barium MR 1 1998
1,2-Dichloropropane MR 1 1998
Trichloroethylene MR 1 1998
1,1,2-Trichloroethane MR 1 1998
Tetrachloroethylene MR 1 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 - RIO LINDO.

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 AZ0415040 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 - RIO LINDO 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
2021 Lead and Copper Rule MR 15 SDWIS / AZ0415040 / 5000
2021 Public Notice Other 6 SDWIS / AZ0415040 / 7500
2020 Chlorine MR 25 SDWIS / AZ0415040 / 0999
2020 Interim Enhanced Surface Water Treatment Rule MR 20 SDWIS / AZ0415040 / 0300
2020 Interim Enhanced Surface Water Treatment Rule TT 12 SDWIS / AZ0415040 / 0300
2020 Surface Water Treatment Rule MR 12 SDWIS / AZ0415040 / 0200
2020 Surface Water Treatment Rule TT 10 SDWIS / AZ0415040 / 0200
2018 E. COLI MR 6 SDWIS / AZ0415040 / 3014
2018 Revised Total Coliform Rule MON 4 SDWIS / AZ0415040 / 8000
2015 Consumer Confidence Rule Other 16 SDWIS / AZ0415040 / 7000
2014 Coliform (TCR) MR 22 SDWIS / AZ0415040 / 3100
2013 Total Haloacetic Acids (HAA5) MR 4 SDWIS / AZ0415040 / 2456
2013 TTHM MR 4 SDWIS / AZ0415040 / 2950
2005 TTHM MCL 1 SDWIS / AZ0415040 / 2950
2004 Nitrate MR 7 SDWIS / AZ0415040 / 1040

How EPCOR - RIO LINDO Compares

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

Metric EPCOR - RIO LINDO Arizona avg Federal benchmark
Total violations 279 153.3 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 23 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 79 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is EPCOR - RIO LINDO water safe to drink? ▼
EPCOR - RIO LINDO (PWS ID: AZ0415040) has 279 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 79 people using Surface Water sources.
How many people does EPCOR - RIO LINDO serve? ▼
EPCOR - RIO LINDO serves 79 people in EL MIRAGE, Arizona. It is a Private-owned system using Surface Water water sources with 36 service connections.
What type of violations does EPCOR - RIO LINDO have? ▼
EPCOR - RIO LINDO has 279 total violations: 23 health-based violations (MCL exceedances or treatment failures), 206 monitoring/reporting violations, and 22 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in EPCOR - RIO LINDO water? ▼
No PFAS testing data is available for EPCOR - RIO LINDO under the EPA's UCMR5 monitoring program.
What water source does EPCOR - RIO LINDO use? ▼
EPCOR - RIO LINDO 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.

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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.

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