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Community Water System · PWS AZ0413045

Prescott City Of

Prescott, Arizona 86301 - drinking water served from groundwater sources to 42,217 people, tracked in EPA SDWIS and UCMR5.

42,217
People served
616
EPA violations
2
Health-based
7 PFAS
UCMR5 result

The verdict

EPA records 616 drinking-water violations at Prescott City Of - above the Arizona per-system average, and UCMR5 testing detected 7 PFAS compounds.

616
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
42,217
People served by this system
7
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Prescott City Of

Prescott City Of is a local-owned community water system that delivers drinking water to 42,217 residents in Prescott, Arizona (Yavapai County) through 24,327 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 616 total violations for this system , of which 2 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 591 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 24 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 7 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 14.9 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%).

Prescott City Of's 616 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

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

Population Served
42,217
Total Violations
616
Health-Based Violations
2
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
24,327
County
Yavapai
School/Daycare
No
MCL Violations
0
Monitoring Violations
591
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 24 2016
Gross Alpha, Excl. Radon and U MR 20 2022
TTHM MR 19 2018
Combined Uranium MR 19 2022
Total Haloacetic Acids (HAA5) MR 18 2018
Combined Radium (-226 and -228) MR 18 2022
Radium-226 MR 18 2022
Radium-228 MR 18 2022
Arsenic MR 18 2025
cis-1,2-Dichloroethylene MR 14 2022
Xylenes, Total MR 14 2022
DICHLOROMETHANE MR 14 2022
1,1-Dichloroethylene MR 14 2022
trans-1,2-Dichloroethylene MR 14 2022
1,2-Dichloroethane MR 14 2022
1,2-Dichloropropane MR 14 2022
1,1,2-Trichloroethane MR 14 2022
Tetrachloroethylene MR 14 2022
CHLOROBENZENE MR 14 2022
Benzene MR 14 2022
Toluene MR 14 2022
Ethylbenzene MR 14 2022
1,2,4-Trichlorobenzene MR 14 2022
p-Dichlorobenzene MR 14 2022
1,1,1-Trichloroethane MR 14 2022
Trichloroethylene MR 14 2022
Styrene MR 14 2022
o-Dichlorobenzene MR 14 2022
Carbon tetrachloride MR 14 2022
Chlorine MR 12 2010

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 22 of 232 samples detected PFAS.

Contaminant Date Result MRL Status
NEtFOSAA 5/16/2023 <5.00 ppt 5.00 ppt Not Detected
8:2 FTS 5/16/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 5/16/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 5/16/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 5/16/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 5/16/2023 <7.00 ppt 7.00 ppt Not Detected
NMeFOSAA 5/16/2023 <6.00 ppt 6.00 ppt Not Detected
4:2 FTS 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 5/16/2023 <5.00 ppt 5.00 ppt Not Detected
PFTA 5/16/2023 <8.00 ppt 8.00 ppt Not Detected
PFHpA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 5/16/2023 <5.00 ppt 5.00 ppt Not Detected
PFBS 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFBA 5/16/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxS 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 5/16/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 5/16/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 5/16/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 5/16/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 5/16/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 5/16/2023 <2.00 ppt 2.00 ppt Not Detected
ADONA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 5/16/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 5/16/2023 <2.00 ppt 2.00 ppt Not Detected
PFTA 5/16/2023 <8.00 ppt 8.00 ppt Not Detected
PFOS 5/16/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 5/16/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxA 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 5/16/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 5/16/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 5/16/2023 <5.00 ppt 5.00 ppt Not Detected
PFHpS 5/16/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 5/16/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 5/16/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 5/16/2023 <6.00 ppt 6.00 ppt Not Detected
NFDHA 5/16/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 5/16/2023 <3.00 ppt 3.00 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 Prescott 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 AZ0413045 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 Prescott 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 Arsenic MR 18 SDWIS / AZ0413045 / 1005
2025 Groundwater Rule TT 2 SDWIS / AZ0413045 / 0700
2025 Public Notice Other 1 SDWIS / AZ0413045 / 7500
2022 Gross Alpha, Excl. Radon and U MR 20 SDWIS / AZ0413045 / 4000
2022 Combined Uranium MR 19 SDWIS / AZ0413045 / 4006
2022 Combined Radium (-226 and -228) MR 18 SDWIS / AZ0413045 / 4010
2022 Radium-226 MR 18 SDWIS / AZ0413045 / 4020
2022 Radium-228 MR 18 SDWIS / AZ0413045 / 4030
2022 cis-1,2-Dichloroethylene MR 14 SDWIS / AZ0413045 / 2380
2022 Xylenes, Total MR 14 SDWIS / AZ0413045 / 2955
2022 DICHLOROMETHANE MR 14 SDWIS / AZ0413045 / 2964
2022 1,1-Dichloroethylene MR 14 SDWIS / AZ0413045 / 2977
2022 trans-1,2-Dichloroethylene MR 14 SDWIS / AZ0413045 / 2979
2022 1,2-Dichloroethane MR 14 SDWIS / AZ0413045 / 2980
2022 1,2-Dichloropropane MR 14 SDWIS / AZ0413045 / 2983

How Prescott City Of Compares

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

Metric Prescott City Of Arizona avg Federal benchmark
Total violations 616 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 2 10.5 Indicates a contaminant exceeded a federal MCL
PFAS detection 7 compounds 95.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 42,217 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 Prescott City Of water safe to drink?
Prescott City Of (PWS ID: AZ0413045) has 616 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 7 PFAS compounds found. This system serves 42,217 people using Groundwater sources.
How many people does Prescott City Of serve?
Prescott City Of serves 42,217 people in Prescott, Arizona. It is a Local-owned system using Groundwater water sources with 24,327 service connections.
What type of violations does Prescott City Of have?
Prescott City Of has 616 total violations: 2 health-based violations (MCL exceedances or treatment failures), 591 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Prescott City Of water?
Yes. UCMR5 testing detected 7 PFAS compounds in Prescott City Of's water supply: PFHxA, PFHxS, PFPeA, PFBS, PFHpA, and others. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Prescott City Of use?
Prescott City Of 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. 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.