Is Fort Washakie Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Native American

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

health-based violations

404

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2014-09-01 → 2014-09-30
MCL	Health-based	Resolved	2014-09-01 → 2014-09-30
MCL	Health-based	Resolved	2013-04-01 → 2013-04-30
MCL	Health-based	Resolved	2013-04-01 → 2013-04-30
TT	Health-based	Resolved	2005-12-01 → 2005-12-31
TT	Health-based	Resolved	2005-12-01 → 2005-12-31
TT	Health-based	Resolved	2005-12-01 → 2005-12-31
TT	Health-based	Resolved	2005-12-01 → 2005-12-31
TT	Health-based	Resolved	2005-05-01 → 2005-05-31
TT	Health-based	Resolved	2005-05-01 → 2005-05-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
PFOA	0.0093 µg/L	1/10	2024

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
TTHM	79.65 µg/L 100% of the EPA limit 80 µg/L worst single sample: 108 µg/L	50/56	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	58.3 µg/L 97% of the EPA limit 60 µg/L worst single sample: 89 µg/L	43/44	SYR4	2012–2019
Copper	166 µg/L 13% of the EPA limit 1300 µg/L worst single sample: 200 µg/L	29/30	SYR4	2016–2019
Bromodichloromethane	11.39 µg/L No EPA limit set worst single sample: 14 µg/L	28/35	SYR4	2014–2019
Chloroform	70.3 µg/L No EPA limit set worst single sample: 75 µg/L	28/35	SYR4	2014–2019
Dichloroacetic Acid	26 µg/L No EPA limit set worst single sample: 37 µg/L	21/22	SYR4	2014–2019
Trichloroacetic Acid	32 µg/L No EPA limit set worst single sample: 52 µg/L	21/22	SYR4	2014–2019
Dibromochloromethane	3.65 µg/L No EPA limit set worst single sample: 3.85 µg/L	17/35	SYR4	2014–2019
Lead	0.0040 mg/L 27% of the EPA limit 0.0150 mg/L	17/17	LCR	2025
Lead	3.55 µg/L 24% of the EPA limit 15 µg/L worst single sample: 4 µg/L	10/30	SYR4	2016–2019
Monochloroacetic Acid	1.7 µg/L No EPA limit set	8/22	SYR4	2014–2019
Nitrate	200 µg/L 2% of the EPA limit 10000 µg/L	8/10	SYR4	2014–2019
Nitrate-Nitrite	356 µg/L 3.6% of the EPA limit 10000 µg/L worst single sample: 440 µg/L	8/24	SYR4	2012–2019
Dibromoacetic Acid	0.4750 µg/L No EPA limit set worst single sample: 0.4900 µg/L	6/22	SYR4	2014–2019
Fluoride	400 µg/L 10% of the EPA limit 4000 µg/L	5/6	SYR4	2015–2019
Combined Radium (-226 And -228)	1.485 pCi/L 30% of the EPA limit 5 pCi/L worst single sample: 1.5 pCi/L	2/4	SYR4	2018–2019
Combined Uranium	1.385 µg/L 4.6% of the EPA limit 30 µg/L worst single sample: 1.4 µg/L	2/4	SYR4	2018–2019
Gross Alpha, Excl. Radon And U	1.09 pCi/L 7.3% of the EPA limit 15 pCi/L worst single sample: 1.1 pCi/L	2/4	SYR4	2018–2019
Lithium	21.5 µg/L No EPA limit set	2/10	UCMR-5	2024
Bromoform	0.5200 µg/L No EPA limit set	1/35	SYR4	2014–2019
Hexachlorocyclopentadiene	0.1900 µg/L 0.4% of the EPA limit 50 µg/L	1/9	SYR4	2016–2019
Selenium	2 µg/L 4% of the EPA limit 50 µg/L	1/7	SYR4	2015–2019

89 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: MARTIN, ERIN
Phone: 307-330-6144
Email: [email protected]

Frequently asked questions about Fort Washakie

Is Fort Washakie tap water safe to drink?

EPA monitoring detected 23 contaminants in Fort Washakie's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Fort Washakie's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Copper, Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.

How many people does Fort Washakie serve?

Fort Washakie reports serving 2,620 people in Wyoming, per its EPA record.

Has Fort Washakie had any water quality violations?

The EPA has 404 violations on file for Fort Washakie, of which 31 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.