States ›Idaho ›Blaine County ›Ketchum

Ketchum, ID Tap Water Quality 2026

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

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

Main Utility: Ketchum City Of PWSID: ID5070028 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 9.00 ppb, 60% of the action level and no violations are open. No PFAS was detected.

C

Ketchum earns a C for water quality

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

Lead: 9.00 ppb — 60% of the federal action level
PFAS tested, none detected
3 violations since 2015, 0 health-based
No violations currently open
Ketchum's lead level vs. all Idaho community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 9.00 ppb — 60% of the federal action level
✓ Lower lead than 4% of Idaho utilities
Population Served
3500
~2100 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
3 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
60% of EPA action level
9.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 9.00 ppb, 60% 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 — — 2025 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2023 Archived
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

3 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 Ketchum City Of
PWSID ID5070028
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 3,500
Service connections 2,100
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Ketchum tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 9.00 ppb, 60% of the action level.
Does Ketchum water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Ketchum? ▼
Ketchum City Of (PWSID ID5070028), one of 2 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2021-06-23. Inspectors recorded 3 significant deficiencies.

What Should Ketchum Residents Do?

1
Consider a filter certified for lead
Look for NSF/ANSI 53 certification for lead reduction.
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.

Nearby Cities in Idaho

Hailey, Id Tap Water Quality 2026 Blaine Bellevue, Id Tap Water Quality 2026 Blaine Sun Valley, Id Tap Water Quality 2026 Blaine Carey, Id Tap Water Quality 2026 Blaine Gannett, Id Tap Water Quality 2026 Blaine