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Community Water System · PWS AZ0407128

Arizona Water Co - White Tanks

Phoenix, Arizona 85015-5351 - drinking water served from surface water sources to 18,858 people, tracked in EPA SDWIS and UCMR5.

18,858
People served
26
EPA violations
1
Health-based
1 PFAS
UCMR5 result

The verdict

EPA records 26 drinking-water violations at Arizona Water Co - White Tanks, 4% of them health-based - below the Arizona per-system average, and UCMR5 testing detected 1 PFAS compound.

26
Total EPA violations on record
4%
Health-based (MCL / treatment failure)
18,858
People served by this system
1
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Arizona Water Co - White Tanks

Arizona Water Co - White Tanks is a public/private-owned community water system that delivers drinking water to 18,858 residents in Phoenix, Arizona (Maricopa County) through 5,627 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 26 total violations for this system , of which 1 (4%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 21 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 5 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 7 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%).

Arizona Water Co - White Tanks's 26 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.

PFAS Detected

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

Population Served
18,858
Total Violations
26
Health-Based Violations
1
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Public/Private
Connections
5,627
County
Maricopa
School/Daycare
No
MCL Violations
1
Monitoring Violations
21
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 5 2022
Arsenic MR 4 2024
2,4-D MR 3 2023
Lead and Copper Rule MR 2 2005
Consumer Confidence Rule Other 2 2003
Revised Total Coliform Rule RPT 2 2020
Fluoride MR 2 1980
TTHM MR 2 2025
Chlorine MR 1 2007
Total Haloacetic Acids (HAA5) MR 1 2005
Nitrate MCL 1 1981
Simazine MR 1 2003

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 290 samples detected PFAS.

Contaminant Date Result MRL Status
PFBA 7/28/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 7/28/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 7/28/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 7/28/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 7/28/2023 <8.00 ppt 8.00 ppt Not Detected
PFHpS 7/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 7/28/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 7/28/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 7/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 7/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 7/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 7/28/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 7/28/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 7/28/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxA 7/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 7/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 7/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 7/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 7/28/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 7/28/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 7/28/2023 <4.00 ppt 4.00 ppt Not Detected
4:2 FTS 7/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 7/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 7/28/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 7/28/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 7/28/2023 <2.00 ppt 2.00 ppt Not Detected
ADONA 7/28/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 7/28/2023 <5.00 ppt 5.00 ppt Not Detected
PFDA 7/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 7/27/2023 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 7/27/2023 <7.00 ppt 7.00 ppt Not Detected
NMeFOSAA 7/27/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 7/27/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 7/27/2023 <2.00 ppt 2.00 ppt Not Detected
PFHpS 7/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 7/27/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 7/27/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 7/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 7/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 7/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 7/27/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 7/27/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 7/27/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 7/27/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 7/27/2023 7.00 ppt 5.00 ppt Detected
ADONA 7/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 7/27/2023 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 7/27/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 7/27/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 7/27/2023 <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 Arizona Water Co - White Tanks.

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 AZ0407128 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 Arizona Water Co - White Tanks 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 TTHM MR 2 SDWIS / AZ0407128 / 2950
2024 Arsenic MR 4 SDWIS / AZ0407128 / 1005
2023 2,4-D MR 3 SDWIS / AZ0407128 / 2105
2022 Nitrate MR 5 SDWIS / AZ0407128 / 1040
2020 Revised Total Coliform Rule RPT 2 SDWIS / AZ0407128 / 8000
2007 Chlorine MR 1 SDWIS / AZ0407128 / 0999
2005 Lead and Copper Rule MR 2 SDWIS / AZ0407128 / 5000
2005 Total Haloacetic Acids (HAA5) MR 1 SDWIS / AZ0407128 / 2456
2003 Consumer Confidence Rule Other 2 SDWIS / AZ0407128 / 7000
2003 Simazine MR 1 SDWIS / AZ0407128 / 2037
1981 Nitrate MCL 1 SDWIS / AZ0407128 / 1040
1980 Fluoride MR 2 SDWIS / AZ0407128 / 1025

How Arizona Water Co - White Tanks Compares

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

Metric Arizona Water Co - White Tanks Arizona avg Federal benchmark
Total violations 26 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 1 10.5 Indicates a contaminant exceeded a federal MCL
PFAS detection 1 compound 95.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 18,858 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 Arizona Water Co - White Tanks water safe to drink? ▼
Arizona Water Co - White Tanks (PWS ID: AZ0407128) has 26 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 18,858 people using Surface Water sources.
How many people does Arizona Water Co - White Tanks serve? ▼
Arizona Water Co - White Tanks serves 18,858 people in Phoenix, Arizona. It is a Public/Private-owned system using Surface Water water sources with 5,627 service connections.
What type of violations does Arizona Water Co - White Tanks have? ▼
Arizona Water Co - White Tanks has 26 total violations: 1 health-based violations (MCL exceedances or treatment failures), 21 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Arizona Water Co - White Tanks water? ▼
Yes. UCMR5 testing detected 1 PFAS compound in Arizona Water Co - White Tanks's water supply: PFBA. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Arizona Water Co - White Tanks use? ▼
Arizona Water Co - White Tanks 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.

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.