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Fort Washakie, WY Tap Water Quality 2026

Water quality report for Fort Washakie, WY — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

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

Main Utility: Fort Washakie PWSID: 085690003 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 4.00 ppb, 27% of the action level and no violations are open. PFAS was detected below the federal limit.

A

Fort Washakie earns an A for water quality

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

Lead: 4.00 ppb — 27% of the federal action level
PFAS detected below the federal limit
4 violations since 2015, 0 health-based
No violations currently open
Fort Washakie's lead level vs. all Wyoming community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 4.00 ppb — 27% of the federal action level
✓ Lower lead than 24% of Wyoming utilities
Population Served
1641
~1073 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
4 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
27% of EPA action level
4.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 4.00 ppb, 27% 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
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
OXAMYL MONITORING AND REPORTING — 0.2 mg/L 2023–2025 Archived
Carbofuran MONITORING AND REPORTING — 0.04 mg/L 2023–2025 Archived
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 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

4 violations are on record since 2015, of which 0 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Fort Washakie
PWSID 085690003
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 1,641
Service connections 1,073
Systems serving this area 2
Regulator US EPA (tribal primacy)
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Fort Washakie tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 4.00 ppb, 27% of the action level.
Does Fort Washakie water have PFAS? ▼
PFAS was detected but stayed below the federal limit.
Who supplies water to Fort Washakie? ▼
Fort Washakie (PWSID 085690003), one of 2 systems serving this area. Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2024-07-25. No significant deficiencies were recorded.

What Should Fort Washakie 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
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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