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Cusick, WA Tap Water Quality 2026

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

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

Main Utility: Kalispel PWSID: 105300036 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 7.80 ppb, 52% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Cusick earns a C for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 7.80 ppb — 52% of the federal action level
PFAS never sampled at this system
35 violations since 2015, 1 health-based
No violations currently open
Cusick's lead level vs. all Washington community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 7.80 ppb — 52% of the federal action level
✓ Lower lead than 7% of Washington utilities
Population Served
72
~97 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
0
35 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
52% of EPA action level
7.80 ppb
Action level: 15 ppb
The 90th-percentile lead result is 7.80 ppb, 52% 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
Consumer Confidence Rule OTHER — — 2025 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Resolved
Public Notice OTHER — — 2024 Resolved
Long Term 2 Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2023 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2023 Resolved
Nitrate MONITORING AND REPORTING — 10 mg/L 2023 Resolved
Consumer Confidence Rule OTHER — — 2020 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2020 Resolved
Consumer Confidence Rule OTHER — — 2020 Resolved
Nitrate MONITORING AND REPORTING — 10 mg/L 2020 Resolved
Consumer Confidence Rule OTHER — — 2019 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2019–2020 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2019–2020 Resolved
Consumer Confidence Rule OTHER — — 2019 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Consumer Confidence Rule OTHER — — 2018 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2018–2019 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2018–2019 Resolved
Consumer Confidence Rule OTHER — — 2018 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2018 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2017–2018 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2017–2018 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2016–2017 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2016–2017 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
Consumer Confidence Rule OTHER — — 2015 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2015–2016 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2015–2016 Resolved
Consumer Confidence Rule OTHER — — 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

35 violations are on record since 2015, of which 1 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Kalispel
PWSID 105300036
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 72
Service connections 97
Systems serving this area 3
Regulator US EPA (tribal primacy)
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Cusick tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 7.80 ppb, 52% of the action level.
Does Cusick water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Cusick? ▼
Kalispel (PWSID 105300036), one of 3 systems serving this area. Surface water. Purchased from another system — SDWIS source code SWP
When was this system last inspected? ▼
It was last inspected on 2023-01-18. Inspectors recorded 1 significant deficiency.

What Should Cusick 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.

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