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Community Water System · PWS AZ0407096

Peoria City Of

Peoria, Arizona 85345 - drinking water served from surface water sources to 187,676 people, tracked in EPA SDWIS and UCMR5.

187,676
People served
2,461
EPA violations
15
Health-based
3 PFAS
UCMR5 result

The verdict

EPA records 2,461 drinking-water violations at Peoria City Of, 1% of them health-based - above the Arizona per-system average, and UCMR5 testing detected 3 PFAS compounds.

2,461
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
187,676
People served by this system
3
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Peoria City Of

Peoria City Of is a local-owned community water system that delivers drinking water to 187,676 residents in Peoria, Arizona (Maricopa County) through 47,872 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 2,461 total violations for this system , of which 15 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 2,430 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Nitrate, recorded in 136 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 3 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 14.8 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

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%).

Peoria City Of's 2,461 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.

PFAS Detected

3 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
187,676
Total Violations
2,461
Health-Based Violations
15
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
47,872
County
Maricopa
School/Daycare
No
MCL Violations
15
Monitoring Violations
2,430
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 136 2024
Xylenes, Total MR 93 2020
Di(2-ethylhexyl) phthalate MR 60 2016
2,3,7,8-TCDD MR 47 2016
DICHLOROMETHANE MR 47 2020
1,2,4-Trichlorobenzene MR 44 2020
o-Dichlorobenzene MR 44 2020
p-Dichlorobenzene MR 44 2020
1,1-Dichloroethylene MR 44 2020
1,2-Dichloroethane MR 44 2020
1,1,1-Trichloroethane MR 44 2020
1,2-Dichloropropane MR 44 2020
Benzene MR 44 2020
Ethylbenzene MR 44 2020
trans-1,2-Dichloroethylene MR 44 2020
Carbon tetrachloride MR 44 2020
Tetrachloroethylene MR 44 2020
CHLOROBENZENE MR 44 2020
Trichloroethylene MR 44 2020
Toluene MR 44 2020
Styrene MR 44 2020
cis-1,2-Dichloroethylene MR 44 2020
1,1,2-Trichloroethane MR 44 2020
2,4,5-TP MR 36 2016
Pentachlorophenol MR 36 2016
Picloram MR 36 2016
2,4-D MR 36 2016
Dalapon MR 36 2016
Dinoseb MR 36 2016
Carbofuran MR 35 2016

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 8 of 957 samples detected PFAS.

Contaminant Date Result MRL Status
4:2 FTS 8/11/2025 <3.00 ppt 3.00 ppt Not Detected
PFEESA 8/11/2025 <3.00 ppt 3.00 ppt Not Detected
PFUnA 8/11/2025 <2.00 ppt 2.00 ppt Not Detected
9Cl-PF3ONS 8/11/2025 <2.00 ppt 2.00 ppt Not Detected
ADONA 8/11/2025 <3.00 ppt 3.00 ppt Not Detected
PFDoA 8/11/2025 <3.00 ppt 3.00 ppt Not Detected
PFNA 8/11/2025 <4.00 ppt 4.00 ppt Not Detected
PFDA 8/11/2025 <3.00 ppt 3.00 ppt Not Detected
PFOA 8/11/2025 <4.00 ppt 4.00 ppt Not Detected
PFOS 8/11/2025 <4.00 ppt 4.00 ppt Not Detected
6:2 FTS 8/11/2025 <5.00 ppt 5.00 ppt Not Detected
PFBA 8/11/2025 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 8/11/2025 <5.00 ppt 5.00 ppt Not Detected
PFHxA 8/11/2025 <3.00 ppt 3.00 ppt Not Detected
PFTA 8/11/2025 <8.00 ppt 8.00 ppt Not Detected
PFHxS 8/11/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpA 8/11/2025 <3.00 ppt 3.00 ppt Not Detected
PFBS 8/11/2025 12.20 ppt 3.00 ppt Detected
PFHpS 8/11/2025 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 8/11/2025 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 8/11/2025 <5.00 ppt 5.00 ppt Not Detected
PFMBA 8/11/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeA 8/11/2025 <3.00 ppt 3.00 ppt Not Detected
PFMPA 8/11/2025 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 8/11/2025 <5.00 ppt 5.00 ppt Not Detected
PFPeS 8/11/2025 <4.00 ppt 4.00 ppt Not Detected
11Cl-PF3OUdS 8/11/2025 <5.00 ppt 5.00 ppt Not Detected
NFDHA 8/11/2025 <20.00 ppt 20.00 ppt Not Detected
NMeFOSAA 8/11/2025 <6.00 ppt 6.00 ppt Not Detected
PFBS 7/15/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeA 7/15/2025 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 7/15/2025 <7.00 ppt 7.00 ppt Not Detected
PFTA 7/15/2025 <8.00 ppt 8.00 ppt Not Detected
PFHpS 7/15/2025 <3.00 ppt 3.00 ppt Not Detected
NFDHA 7/15/2025 <20.00 ppt 20.00 ppt Not Detected
PFMBA 7/15/2025 <3.00 ppt 3.00 ppt Not Detected
NEtFOSAA 7/15/2025 <5.00 ppt 5.00 ppt Not Detected
PFMPA 7/15/2025 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 7/15/2025 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 7/15/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeS 7/15/2025 <4.00 ppt 4.00 ppt Not Detected
6:2 FTS 7/15/2025 <5.00 ppt 5.00 ppt Not Detected
PFBA 7/15/2025 <5.00 ppt 5.00 ppt Not Detected
PFOS 7/15/2025 <4.00 ppt 4.00 ppt Not Detected
PFEESA 7/15/2025 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 7/15/2025 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 7/15/2025 <6.00 ppt 6.00 ppt Not Detected
PFNA 7/15/2025 <4.00 ppt 4.00 ppt Not Detected
PFHpA 7/15/2025 <3.00 ppt 3.00 ppt Not Detected
PFOA 7/15/2025 <4.00 ppt 4.00 ppt Not Detected

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 Peoria City Of.

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 AZ0407096 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 Peoria City Of 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
2025 CARBON, TOTAL MR 6 SDWIS / AZ0407096 / 2920
2024 Nitrate MR 136 SDWIS / AZ0407096 / 1040
2024 Long Term 2 Enhanced Surface Water Treatment Rule MR 4 SDWIS / AZ0407096 / 0800
2022 Bromate MR 2 SDWIS / AZ0407096 / 1011
2021 Surface Water Treatment Rule MR 2 SDWIS / AZ0407096 / 0200
2020 Xylenes, Total MR 93 SDWIS / AZ0407096 / 2955
2020 DICHLOROMETHANE MR 47 SDWIS / AZ0407096 / 2964
2020 1,2,4-Trichlorobenzene MR 44 SDWIS / AZ0407096 / 2378
2020 o-Dichlorobenzene MR 44 SDWIS / AZ0407096 / 2968
2020 p-Dichlorobenzene MR 44 SDWIS / AZ0407096 / 2969
2020 1,1-Dichloroethylene MR 44 SDWIS / AZ0407096 / 2977
2020 1,2-Dichloroethane MR 44 SDWIS / AZ0407096 / 2980
2020 1,1,1-Trichloroethane MR 44 SDWIS / AZ0407096 / 2981
2020 1,2-Dichloropropane MR 44 SDWIS / AZ0407096 / 2983
2020 Benzene MR 44 SDWIS / AZ0407096 / 2990

How Peoria City Of Compares

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

Metric Peoria City Of Arizona avg Federal benchmark
Total violations 2,461 153.3 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 3 compounds 95.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 187,676 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 Peoria City Of water safe to drink?
Peoria City Of (PWS ID: AZ0407096) has 2461 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 3 PFAS compounds found. This system serves 187,676 people using Surface Water sources.
How many people does Peoria City Of serve?
Peoria City Of serves 187,676 people in Peoria, Arizona. It is a Local-owned system using Surface Water water sources with 47,872 service connections.
What type of violations does Peoria City Of have?
Peoria City Of has 2,461 total violations: 15 health-based violations (MCL exceedances or treatment failures), 2,430 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Peoria City Of water?
Yes. UCMR5 testing detected 3 PFAS compounds in Peoria City Of's water supply: PFBS, PFOA, PFHxS. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Peoria City Of use?
Peoria City Of 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
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.