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QUINTERO AREA WATER SYSTEM

PWS ID: AZ0407513 · PEORIA, Arizona 85345

QUINTERO AREA WATER SYSTEM serves 30 people in PEORIA, Arizona using Surface Water water sources. It has 126 recorded EPA violations, including 9 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: QUINTERO AREA WATER SYSTEM

QUINTERO AREA WATER SYSTEM is a private-owned transient non-community water system that delivers drinking water to 30 residents in PEORIA, Arizona (Maricopa County) through 15 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 126 total violations for this system , of which 9 (7%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 110 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 TTHM, recorded in 14 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. QUINTERO AREA WATER SYSTEM's 126 violations sit below 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
30
Total Violations
126
Health-Based Violations
9
Water Source
Surface Water

System Details

System Type
Transient Non-Community
Owner Type
Private
Connections
15
County
Maricopa
School/Daycare
No
MCL Violations
9
Monitoring Violations
110
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MR 14 2020
Total Haloacetic Acids (HAA5) MR 14 2020
Coliform (TCR) MR 12 2006
Chlorine MR 10 2008
TTHM MCL 9 2008
Surface Water Treatment Rule MR 6 2021
Interim Enhanced Surface Water Treatment Rule MR 4 2019
Nitrate MR 4 2006
1,2,4-Trichlorobenzene MR 2 2006
1,1,1-Trichloroethane MR 2 2006
1,2-Dichloroethane MR 2 2006
1,1,2-Trichloroethane MR 2 2006
Benzene MR 2 2006
cis-1,2-Dichloroethylene MR 2 2006
o-Dichlorobenzene MR 2 2006
Vinyl chloride MR 2 2006
1,1-Dichloroethylene MR 2 2006
trans-1,2-Dichloroethylene MR 2 2006
1,2-Dichloropropane MR 2 2006
Trichloroethylene MR 2 2006
Tetrachloroethylene MR 2 2006
Toluene MR 2 2006
Ethylbenzene MR 2 2006
Styrene MR 2 2006
Consumer Confidence Rule Other 2 2009
E. COLI MR 2 2018
Carbon tetrachloride MR 2 2006
DICHLOROMETHANE MR 2 2006
Xylenes, Total MR 2 2006
Revised Total Coliform Rule RPT 2 2019

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 QUINTERO AREA WATER SYSTEM.

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 AZ0407513 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 QUINTERO AREA WATER SYSTEM 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 Surface Water Treatment Rule MR 6 SDWIS / AZ0407513 / 0200
2020 TTHM MR 14 SDWIS / AZ0407513 / 2950
2020 Total Haloacetic Acids (HAA5) MR 14 SDWIS / AZ0407513 / 2456
2019 Interim Enhanced Surface Water Treatment Rule MR 4 SDWIS / AZ0407513 / 0300
2019 Revised Total Coliform Rule RPT 2 SDWIS / AZ0407513 / 8000
2018 E. COLI MR 2 SDWIS / AZ0407513 / 3014
2009 Consumer Confidence Rule Other 2 SDWIS / AZ0407513 / 7000
2008 Chlorine MR 10 SDWIS / AZ0407513 / 0999
2008 TTHM MCL 9 SDWIS / AZ0407513 / 2950
2006 Coliform (TCR) MR 12 SDWIS / AZ0407513 / 3100
2006 Nitrate MR 4 SDWIS / AZ0407513 / 1040
2006 1,2,4-Trichlorobenzene MR 2 SDWIS / AZ0407513 / 2378
2006 1,1,1-Trichloroethane MR 2 SDWIS / AZ0407513 / 2981
2006 1,2-Dichloroethane MR 2 SDWIS / AZ0407513 / 2980
2006 1,1,2-Trichloroethane MR 2 SDWIS / AZ0407513 / 2985

How QUINTERO AREA WATER SYSTEM Compares

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

Metric QUINTERO AREA WATER SYSTEM Arizona avg Federal benchmark
Total violations 126 153.3 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 9 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is QUINTERO AREA WATER SYSTEM water safe to drink? ▼
QUINTERO AREA WATER SYSTEM (PWS ID: AZ0407513) has 126 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 30 people using Surface Water sources.
How many people does QUINTERO AREA WATER SYSTEM serve? ▼
QUINTERO AREA WATER SYSTEM serves 30 people in PEORIA, Arizona. It is a Private-owned system using Surface Water water sources with 15 service connections.
What type of violations does QUINTERO AREA WATER SYSTEM have? ▼
QUINTERO AREA WATER SYSTEM has 126 total violations: 9 health-based violations (MCL exceedances or treatment failures), 110 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in QUINTERO AREA WATER SYSTEM water? ▼
No PFAS testing data is available for QUINTERO AREA WATER SYSTEM under the EPA's UCMR5 monitoring program.
What water source does QUINTERO AREA WATER SYSTEM use? ▼
QUINTERO AREA WATER SYSTEM uses Surface Water 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.

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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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