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WMATUA Miner Flat

PWS ID: 090400693 · Whiteriver, 09 85941

WMATUA Miner Flat serves 15,570 people in Whiteriver, 09 using Surface Water water sources. It has 341 recorded EPA violations, including 7 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (1 compound found).

Water Quality Snapshot: WMATUA Miner Flat

WMATUA Miner Flat is a native american-owned community water system that delivers drinking water to 15,570 residents in Whiteriver, 09 through 2,570 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 341 total violations for this system , of which 7 (2%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 201 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 Coliform (TCR), recorded in 15 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 22.7 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across 09, EPA tracks 323 public water systems serving 555,721 people, with 48,296 cumulative violations and 3,354 health-based violations on record. About 97% of systems in the state carry at least one violation, and state-wide the average per system is 149.5 violations. WMATUA Miner Flat's 341 violations sit above the 09 average. Statewide, 30 of 41 UCMR5-tested systems have reported PFAS detections (73.2%). 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
15,570
Total Violations
341
Health-Based Violations
7
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Native American
Connections
2,570
School/Daycare
No
MCL Violations
2
Monitoring Violations
201
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 15 2015
Arsenic MR 12 2025
Total Haloacetic Acids (HAA5) MR 8 2015
TTHM MR 8 2015
CARBON, TOTAL MR 7 2023
Nitrate MR 6 2007
1,2,4-Trichlorobenzene MR 4 2023
cis-1,2-Dichloroethylene MR 4 2023
Xylenes, Total MR 4 2023
o-Dichlorobenzene MR 4 2023
p-Dichlorobenzene MR 4 2023
Vinyl chloride MR 4 2023
1,1-Dichloroethylene MR 4 2023
trans-1,2-Dichloroethylene MR 4 2023
1,2-Dichloroethane MR 4 2023
1,1,1-Trichloroethane MR 4 2023
Carbon tetrachloride MR 4 2023
1,2-Dichloropropane MR 4 2023
Trichloroethylene MR 4 2023
1,1,2-Trichloroethane MR 4 2023
Tetrachloroethylene MR 4 2023
CHLOROBENZENE MR 4 2023
Benzene MR 4 2023
Toluene MR 4 2023
Ethylbenzene MR 4 2023
Styrene MR 4 2023
DICHLOROMETHANE MR 4 2023
Barium MR 3 2012
Cadmium MR 3 2012
Chromium MR 3 2012

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 8 of 240 samples detected PFAS.

Contaminant Date Result MRL Status
lithium 8/28/2024 21.9000 µg/L 9 µg/L Detected
lithium 8/28/2024 11.2000 µg/L 9 µg/L Detected
9Cl-PF3ONS 8/22/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHpS 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 8/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 8/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 8/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/22/2024 <0.02 µg/L 0.02 µg/L Not Detected
11Cl-PF3OUdS 8/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 8/22/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 8/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 8/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 8/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 8/22/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 8/22/2024 <0.008 µg/L 0.008 µg/L Not Detected
NMeFOSAA 8/22/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFOS 8/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
9Cl-PF3ONS 8/22/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 8/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 8/22/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 8/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 8/22/2024 <0.006 µg/L 0.006 µg/L Not Detected
ADONA 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 8/22/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFDoA 8/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 8/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
NFDHA 8/22/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFOA 8/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 8/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFPeS 8/22/2024 <0.004 µg/L 0.004 µg/L 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 WMATUA Miner Flat.

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 090400693 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

09 Drinking Water Authority

09's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find 09 regulator via EPA SDWIS

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 12 SDWIS / 090400693 / 1005
2024 LEAD AND COPPER RULE REVISIONS TT 3 SDWIS / 090400693 / 5200
2024 Surface Water Treatment Rule MR 1 SDWIS / 090400693 / 0200
2024 Groundwater Rule TT 1 SDWIS / 090400693 / 0700
2023 CARBON, TOTAL MR 7 SDWIS / 090400693 / 2920
2023 1,2,4-Trichlorobenzene MR 4 SDWIS / 090400693 / 2378
2023 cis-1,2-Dichloroethylene MR 4 SDWIS / 090400693 / 2380
2023 Xylenes, Total MR 4 SDWIS / 090400693 / 2955
2023 o-Dichlorobenzene MR 4 SDWIS / 090400693 / 2968
2023 p-Dichlorobenzene MR 4 SDWIS / 090400693 / 2969
2023 Vinyl chloride MR 4 SDWIS / 090400693 / 2976
2023 1,1-Dichloroethylene MR 4 SDWIS / 090400693 / 2977
2023 trans-1,2-Dichloroethylene MR 4 SDWIS / 090400693 / 2979
2023 1,2-Dichloroethane MR 4 SDWIS / 090400693 / 2980
2023 1,1,1-Trichloroethane MR 4 SDWIS / 090400693 / 2981

How WMATUA Miner Flat Compares

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

Metric WMATUA Miner Flat 09 avg Federal benchmark
Total violations 341 149.5 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 7 10.4 Indicates a contaminant exceeded a federal MCL
PFAS detection 1 compound 73.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 15,570 1,720 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 323 regulated public water systems in 09.

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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is WMATUA Miner Flat water safe to drink? ▼
WMATUA Miner Flat (PWS ID: 090400693) has 341 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 15,570 people using Surface Water sources.
How many people does WMATUA Miner Flat serve? ▼
WMATUA Miner Flat serves 15,570 people in Whiteriver, 09. It is a Native American-owned system using Surface Water water sources with 2,570 service connections.
What type of violations does WMATUA Miner Flat have? ▼
WMATUA Miner Flat has 341 total violations: 7 health-based violations (MCL exceedances or treatment failures), 201 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in WMATUA Miner Flat water? ▼
Yes. UCMR5 testing detected 1 PFAS compound in WMATUA Miner Flat's water supply: lithium. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does WMATUA Miner Flat use? ▼
WMATUA Miner Flat 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.

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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.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial