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Community Water System · PWS AZ0407003

Aguila Water Service

Sun City, Arizona 85372-1086 - drinking water served from groundwater sources to 987 people, tracked in EPA SDWIS and UCMR5.

987
People served
129
EPA violations
8
Health-based
Untested
UCMR5 result

The verdict

EPA records 129 drinking-water violations at Aguila Water Service, 6% of them health-based - below the Arizona per-system average.

129
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
987
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Aguila Water Service

Aguila Water Service is a public/private-owned community water system that delivers drinking water to 987 residents in Sun City, Arizona (Maricopa County) through 359 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 129 total violations for this system , of which 8 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 104 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 26 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%).

Aguila Water Service's 129 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
987
Total Violations
129
Health-Based Violations
8
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Public/Private
Connections
359
County
Maricopa
School/Daycare
No
MCL Violations
8
Monitoring Violations
104
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 26 2015
Consumer Confidence Rule Other 9 2016
Revised Total Coliform Rule RPT 6 2021
E. COLI MR 5 2024
Lead and Copper Rule MR 4 2014
Coliform (TCR) MCL 4 2014
Revised Total Coliform Rule MON 4 2023
Fluoride MCL 4 1982
Nitrate MR 2 1999
Fluoride MR 2 1998
Chromium MR 1 1998
Beryllium, Total MR 1 1998
Thallium, Total MR 1 1998
Selenium MR 1 1998
Nickel MR 1 1998
1,2,4-Trichlorobenzene MR 1 1998
o-Dichlorobenzene MR 1 1998
1,2-Dichloroethane MR 1 1998
1,1-Dichloroethylene MR 1 1998
Carbon tetrachloride MR 1 1998
1,2-Dichloropropane MR 1 1998
Trichloroethylene MR 1 1998
Tetrachloroethylene MR 1 1998
Toluene MR 1 1998
Endrin MR 1 1998
BHC-GAMMA MR 1 1998
Toxaphene MR 1 1998
Dalapon MR 1 1998
Di(2-ethylhexyl) phthalate MR 1 1998
Hexachlorocyclopentadiene 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 Aguila Water Service.

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 AZ0407003 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 Aguila Water Service 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
2024 E. COLI MR 5 SDWIS / AZ0407003 / 3014
2023 Revised Total Coliform Rule MON 4 SDWIS / AZ0407003 / 8000
2021 Revised Total Coliform Rule RPT 6 SDWIS / AZ0407003 / 8000
2016 Consumer Confidence Rule Other 9 SDWIS / AZ0407003 / 7000
2015 Coliform (TCR) MR 26 SDWIS / AZ0407003 / 3100
2014 Lead and Copper Rule MR 4 SDWIS / AZ0407003 / 5000
2014 Coliform (TCR) MCL 4 SDWIS / AZ0407003 / 3100
1999 Nitrate MR 2 SDWIS / AZ0407003 / 1040
1998 Fluoride MR 2 SDWIS / AZ0407003 / 1025
1998 Chromium MR 1 SDWIS / AZ0407003 / 1020
1998 Beryllium, Total MR 1 SDWIS / AZ0407003 / 1075
1998 Thallium, Total MR 1 SDWIS / AZ0407003 / 1085
1998 Selenium MR 1 SDWIS / AZ0407003 / 1045
1998 Nickel MR 1 SDWIS / AZ0407003 / 1036
1998 1,2,4-Trichlorobenzene MR 1 SDWIS / AZ0407003 / 2378

How Aguila Water Service Compares

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

Metric Aguila Water Service Arizona avg Federal benchmark
Total violations 129 153.3 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 987 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 Aguila Water Service water safe to drink? ▼
Aguila Water Service (PWS ID: AZ0407003) has 129 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 987 people using Groundwater sources.
How many people does Aguila Water Service serve? ▼
Aguila Water Service serves 987 people in Sun City, Arizona. It is a Public/Private-owned system using Groundwater water sources with 359 service connections.
What type of violations does Aguila Water Service have? ▼
Aguila Water Service has 129 total violations: 8 health-based violations (MCL exceedances or treatment failures), 104 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Aguila Water Service water? ▼
No PFAS testing data is available for Aguila Water Service under the EPA's UCMR5 monitoring program.
What water source does Aguila Water Service use? ▼
Aguila Water Service 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.