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FORT HALL

PWS ID: 101612109 · FORT HALL, 10 83203

FORT HALL serves 2,850 people in FORT HALL, 10 using Groundwater water sources. It has 505 recorded EPA violations, including 6 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (1 compound found).

Water Quality Snapshot: FORT HALL

FORT HALL is a native american-owned community water system that delivers drinking water to 2,850 residents in FORT HALL, 10 through 600 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 505 total violations for this system , of which 6 (1%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 493 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 25 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 33 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across 10, EPA tracks 158 public water systems serving 142,574 people, with 31,953 cumulative violations and 1,055 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 202.2 violations. FORT HALL's 505 violations sit above the 10 average. Statewide, 2 of 10 UCMR5-tested systems have reported PFAS detections (20%). 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
2,850
Total Violations
505
Health-Based Violations
6
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
600
School/Daycare
No
MCL Violations
5
Monitoring Violations
493
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 25 2015
Chlorine MR 12 2015
2,3,7,8-TCDD MR 12 2024
Gross Alpha, Excl. Radon and U MR 10 2020
Combined Uranium MR 10 2020
Combined Radium (-226 and -228) MR 10 2020
Xylenes, Total MR 9 2025
DICHLOROMETHANE MR 9 2025
Vinyl chloride MR 9 2025
1,1-Dichloroethylene MR 9 2025
1,2-Dichloroethane MR 9 2025
Carbon tetrachloride MR 9 2025
Trichloroethylene MR 9 2025
1,1,2-Trichloroethane MR 9 2025
Tetrachloroethylene MR 9 2025
CHLOROBENZENE MR 9 2025
Benzene MR 9 2025
Styrene MR 9 2025
1,2,4-Trichlorobenzene MR 9 2025
o-Dichlorobenzene MR 9 2025
p-Dichlorobenzene MR 9 2025
Ethylbenzene MR 9 2025
cis-1,2-Dichloroethylene MR 9 2025
1,2-Dichloropropane MR 9 2025
Toluene MR 9 2025
1,1,1-Trichloroethane MR 9 2025
trans-1,2-Dichloroethylene MR 9 2025
Carbofuran MR 7 2016
Endrin MR 7 2016
Toxaphene MR 7 2016

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 60 samples detected PFAS.

Contaminant Date Result MRL Status
PFUnA 5/7/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 5/7/2025 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 5/7/2025 <0.002 µg/L 0.002 µg/L Not Detected
NMeFOSAA 5/7/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFMPA 5/7/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 5/7/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 5/7/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 5/7/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFOA 5/7/2025 <0.004 µg/L 0.004 µg/L Not Detected
NEtFOSAA 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
lithium 5/7/2025 33.0000 µg/L 9 µg/L Detected
PFBS 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 5/7/2025 <0.004 µg/L 0.004 µg/L Not Detected
11Cl-PF3OUdS 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 5/7/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFHpS 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/7/2025 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 5/7/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/7/2025 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
lithium 5/7/2025 17.6000 µg/L 9 µg/L Detected
PFNA 5/7/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFUnA 5/7/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 5/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 5/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 5/7/2025 <0.006 µg/L 0.006 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 FORT HALL.

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 101612109 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

10 Drinking Water Authority

10'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 10 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 Xylenes, Total MR 9 SDWIS / 101612109 / 2955
2025 DICHLOROMETHANE MR 9 SDWIS / 101612109 / 2964
2025 Vinyl chloride MR 9 SDWIS / 101612109 / 2976
2025 1,1-Dichloroethylene MR 9 SDWIS / 101612109 / 2977
2025 1,2-Dichloroethane MR 9 SDWIS / 101612109 / 2980
2025 Carbon tetrachloride MR 9 SDWIS / 101612109 / 2982
2025 Trichloroethylene MR 9 SDWIS / 101612109 / 2984
2025 1,1,2-Trichloroethane MR 9 SDWIS / 101612109 / 2985
2025 Tetrachloroethylene MR 9 SDWIS / 101612109 / 2987
2025 CHLOROBENZENE MR 9 SDWIS / 101612109 / 2989
2025 Benzene MR 9 SDWIS / 101612109 / 2990
2025 Styrene MR 9 SDWIS / 101612109 / 2996
2025 1,2,4-Trichlorobenzene MR 9 SDWIS / 101612109 / 2378
2025 o-Dichlorobenzene MR 9 SDWIS / 101612109 / 2968
2025 p-Dichlorobenzene MR 9 SDWIS / 101612109 / 2969

How FORT HALL Compares

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

Metric FORT HALL 10 avg Federal benchmark
Total violations 505 202.2 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 6 6.7 Indicates a contaminant exceeded a federal MCL
PFAS detection 1 compound 20% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 2,850 902 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 158 regulated public water systems in 10.

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 FORT HALL water safe to drink? ▼
FORT HALL (PWS ID: 101612109) has 505 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 2,850 people using Groundwater sources.
How many people does FORT HALL serve? ▼
FORT HALL serves 2,850 people in FORT HALL, 10. It is a Native American-owned system using Groundwater water sources with 600 service connections.
What type of violations does FORT HALL have? ▼
FORT HALL has 505 total violations: 6 health-based violations (MCL exceedances or treatment failures), 493 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in FORT HALL water? ▼
Yes. UCMR5 testing detected 1 PFAS compound in FORT HALL's water supply: lithium. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does FORT HALL use? ▼
FORT HALL 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.

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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