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North Fork, AZ Tap Water Quality 2026

Water quality report for North Fork, AZ — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at North Fork's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Wmatua Miner Flat PWSID: 090400693 Updated: 2026 Q2
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9 violations currently open

Lead is 1.00 ppb, 7% of the action level. No PFAS was detected.

F

North Fork earns an F for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 1.00 ppb — 7% of the federal action level
PFAS tested, none detected
98 violations since 2015, 12 health-based
9 violations currently open
North Fork's lead level vs. all Arizona community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.00 ppb — 7% of the federal action level
✓ Lower lead than 78% of Arizona utilities
Population Served
459
~2570 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
9
9 open of 98 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
7% of EPA action level
1.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.00 ppb, 7% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Groundwater Rule TREATMENT TECHNIQUE — — 2026 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2026 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2026 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2026 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2026 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2026 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2026 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2026 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2026 Unaddressed
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2025 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2025 Resolved
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2024 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2024 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2023 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2023 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2023 Resolved
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2023 Resolved
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2023 Resolved
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2023 Resolved
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2023 Resolved
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2023 Resolved
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2023 Resolved
Vinyl chloride MONITORING AND REPORTING — 0.002 mg/L 2023 Resolved
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2023 Resolved
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2023 Resolved
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2023 Resolved
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2023 Resolved
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2023 Resolved
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2023 Resolved
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2023 Resolved
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2023 Resolved
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2023 Resolved
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2023 Resolved
Benzene MONITORING AND REPORTING — 0.005 mg/L 2023 Resolved
Toluene MONITORING AND REPORTING — 1 mg/L 2023 Resolved
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2023 Resolved
Styrene MONITORING AND REPORTING — 0.1 mg/L 2023 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2022 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2021 Resolved
Public Notice OTHER — — 2021 Resolved
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2020 Resolved
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2020 Resolved
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2020 Resolved
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2020 Resolved
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2020 Resolved
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2020 Resolved
Vinyl chloride MONITORING AND REPORTING — 0.002 mg/L 2020 Resolved
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2020 Resolved
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2020 Resolved
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2020 Resolved
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2020 Resolved
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2020 Resolved
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2020 Resolved
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2020 Resolved
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2020 Resolved
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2020 Resolved
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2020 Resolved
Benzene MONITORING AND REPORTING — 0.005 mg/L 2020 Resolved
Toluene MONITORING AND REPORTING — 1 mg/L 2020 Resolved
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2020 Resolved
Styrene MONITORING AND REPORTING — 0.1 mg/L 2020 Resolved
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2018 Resolved
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2018 Resolved
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2018 Resolved
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2018 Resolved
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2018 Resolved
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2018 Resolved
Vinyl chloride MONITORING AND REPORTING — 0.002 mg/L 2018 Resolved
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2018 Resolved
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2018 Resolved
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2018 Resolved
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2018 Resolved
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2018 Resolved
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2018 Resolved
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2018 Resolved
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2018 Resolved
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2018 Resolved
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2018 Resolved
Benzene MONITORING AND REPORTING — 0.005 mg/L 2018 Resolved
Toluene MONITORING AND REPORTING — 1 mg/L 2018 Resolved
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2018 Resolved
Styrene MONITORING AND REPORTING — 0.1 mg/L 2018 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2017 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2016 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2016 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2016 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2016 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2015 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2015 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2015 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2015 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2015 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2015 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2015 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2015 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

9 violations remain open, out of 98 recorded since 2015 (12 health-based).

About the Main Water System

Utility Wmatua Miner Flat
PWSID 090400693
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 459
Service connections 2,570
Systems serving this area 1
Regulator US EPA (tribal primacy)
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is North Fork tap water safe to drink? ▼
No federal limit is exceeded on record. 9 violation(s) remain open. Lead is 1.00 ppb, 7% of the action level.
Does North Fork water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to North Fork? ▼
Wmatua Miner Flat (PWSID 090400693). Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2023-06-08. Inspectors recorded 5 significant deficiencies.

What Should North Fork Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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