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Community Water System · PWS AZ0410041

Vail Water Company

Vail, Arizona 85641 - drinking water served from groundwater sources to 17,500 people, tracked in EPA SDWIS and UCMR5.

17,500
People served
173
EPA violations
12
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 173 drinking-water violations at Vail Water Company, 7% of them health-based - above the Arizona per-system average.

173
Total EPA violations on record
7%
Health-based (MCL / treatment failure)
17,500
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Vail Water Company

Vail Water Company is a private-owned community water system that delivers drinking water to 17,500 residents in Vail, Arizona (Pima County) through 7,000 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 173 total violations for this system , of which 12 (7%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 147 monitoring and reporting violations are on file. The most recent violation on record dates to 2017.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 30 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Vail Water Company's 173 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.

Population Served
17,500
Total Violations
173
Health-Based Violations
12
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
7,000
County
Pima
School/Daycare
No
MCL Violations
12
Monitoring Violations
147
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 30 2015
Coliform (TCR) MCL 12 2012
Nitrate MR 12 2006
Chlorine MR 10 2013
Consumer Confidence Rule Other 6 2015
Total Haloacetic Acids (HAA5) MR 6 2017
TTHM MR 6 2017
1,2,4-Trichlorobenzene MR 4 2006
cis-1,2-Dichloroethylene MR 4 2006
DICHLOROMETHANE MR 4 2006
1,1-Dichloroethylene MR 4 2006
1,2-Dichloroethane MR 4 2006
1,1,1-Trichloroethane MR 4 2006
1,2-Dichloropropane MR 4 2006
Trichloroethylene MR 4 2006
1,1,2-Trichloroethane MR 4 2006
Benzene MR 4 2006
Ethylbenzene MR 4 2006
Styrene MR 4 2006
o-Dichlorobenzene MR 4 2006
p-Dichlorobenzene MR 4 2006
trans-1,2-Dichloroethylene MR 4 2006
Tetrachloroethylene MR 4 2006
Toluene MR 4 2006
Carbon tetrachloride MR 4 2006
CHLOROBENZENE MR 4 2006
Xylenes, Total MR 4 2006
Lead and Copper Rule MR 1 2005
Vinyl chloride MR 1 2006
Gross Alpha, Excl. Radon and U MR 1 1980

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 58 samples detected PFAS.

Contaminant Date Result MRL Status
PFUnA 9/12/2023 <2.00 ppt 2.00 ppt Not Detected
6:2 FTS 9/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 9/12/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 9/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFNA 9/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 9/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 9/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 9/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 9/12/2023 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 9/12/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 9/12/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 9/12/2023 <2.00 ppt 2.00 ppt Not Detected
PFBA 9/12/2023 <5.00 ppt 5.00 ppt Not Detected
NFDHA 9/12/2023 <20.00 ppt 20.00 ppt Not Detected
PFTA 9/12/2023 <8.00 ppt 8.00 ppt Not Detected
PFHxS 9/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 9/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpS 9/12/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 9/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFPeS 9/12/2023 <4.00 ppt 4.00 ppt Not Detected
NMeFOSAA 9/12/2023 <6.00 ppt 6.00 ppt Not Detected
PFEESA 9/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 9/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 9/12/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 9/12/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
ADONA 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 3/20/2023 <4.00 ppt 4.00 ppt Not Detected
PFTrDA 3/20/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 3/20/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 3/20/2023 <6.00 ppt 6.00 ppt Not Detected
PFOA 3/20/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 3/20/2023 <2.00 ppt 2.00 ppt Not Detected
PFTA 3/20/2023 <8.00 ppt 8.00 ppt Not Detected
9Cl-PF3ONS 3/20/2023 <2.00 ppt 2.00 ppt Not Detected
PFNA 3/20/2023 <4.00 ppt 4.00 ppt Not Detected
HFPO-DA 3/20/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 3/20/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 3/20/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 3/20/2023 <5.00 ppt 5.00 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 Vail Water Company.

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 AZ0410041 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 Vail Water Company 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
2017 Total Haloacetic Acids (HAA5) MR 6 SDWIS / AZ0410041 / 2456
2017 TTHM MR 6 SDWIS / AZ0410041 / 2950
2015 Coliform (TCR) MR 30 SDWIS / AZ0410041 / 3100
2015 Consumer Confidence Rule Other 6 SDWIS / AZ0410041 / 7000
2013 Chlorine MR 10 SDWIS / AZ0410041 / 0999
2012 Coliform (TCR) MCL 12 SDWIS / AZ0410041 / 3100
2006 Nitrate MR 12 SDWIS / AZ0410041 / 1040
2006 1,2,4-Trichlorobenzene MR 4 SDWIS / AZ0410041 / 2378
2006 cis-1,2-Dichloroethylene MR 4 SDWIS / AZ0410041 / 2380
2006 DICHLOROMETHANE MR 4 SDWIS / AZ0410041 / 2964
2006 1,1-Dichloroethylene MR 4 SDWIS / AZ0410041 / 2977
2006 1,2-Dichloroethane MR 4 SDWIS / AZ0410041 / 2980
2006 1,1,1-Trichloroethane MR 4 SDWIS / AZ0410041 / 2981
2006 1,2-Dichloropropane MR 4 SDWIS / AZ0410041 / 2983
2006 Trichloroethylene MR 4 SDWIS / AZ0410041 / 2984

How Vail Water Company Compares

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

Metric Vail Water Company Arizona avg Federal benchmark
Total violations 173 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 12 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 17,500 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 Vail Water Company water safe to drink? ▼
Vail Water Company (PWS ID: AZ0410041) has 173 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 17,500 people using Groundwater sources.
How many people does Vail Water Company serve? ▼
Vail Water Company serves 17,500 people in Vail, Arizona. It is a Private-owned system using Groundwater water sources with 7,000 service connections.
What type of violations does Vail Water Company have? ▼
Vail Water Company has 173 total violations: 12 health-based violations (MCL exceedances or treatment failures), 147 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Vail Water Company water? ▼
No. Vail Water Company was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Vail Water Company use? ▼
Vail Water Company 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.

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.