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About this data: ClearWater uses the EPA's Safe Drinking Water Information System (SDWIS). Data is for public water systems only; private wells are not included. Legal limits (MCLs) are minimum standards; some contaminants may still pose health risks below legal thresholds.
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OAKLEY VALLEY WATER CORPORATION
OAKLEY, ID · 500 people served · Groundwater
Data last updated: 2026-07-12
50 total violations on record. No currently active health-based violations.
Health-Based Violations
- Lead and Copper Rule: Treatment Technique Violation (Resolved)
- Groundwater Rule: Treatment Technique Violation (Resolved) — State Compliance achieved (State) on 2020-12-18
- Groundwater Rule: Treatment Technique Violation (Resolved)
- Groundwater Rule: Treatment Technique Violation (Resolved) — State Compliance achieved (State) on 2016-11-29
- Groundwater Rule: Treatment Technique Violation (Resolved) — State Compliance achieved (State) on 2016-11-29
- Groundwater Rule: Treatment Technique Violation (Resolved) — State Compliance achieved (State) on 2016-11-29
Lead & Copper
| Measure | Result | EPA action level | Status | Monitoring period |
|---|---|---|---|---|
| Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Below action level | 2025-12-31 |
These are 90th-percentile results across sampled household taps, not a single measurement, and neither lead nor copper has a Maximum Contaminant Level. Lead reaches tap water from household plumbing rather than from the treatment plant, so a result below the action level does not guarantee your own tap is below it. Source: EPA SDWIS, Lead and Copper Rule sampling.
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OAKLEY VALLEY WATER CORPORATION: Frequently Asked Questions
Is OAKLEY VALLEY WATER CORPORATION water safe to drink?
OAKLEY VALLEY WATER CORPORATION has had multiple health-based violations in recent years (grade C). Review the specific violations below and consider filtering your drinking water.
What violations has OAKLEY VALLEY WATER CORPORATION had?
Recent health-based violations at OAKLEY VALLEY WATER CORPORATION include: Lead and Copper Rule, Groundwater Rule, Groundwater Rule. See the full violation history on this page for dates, status, and details.
Does OAKLEY VALLEY WATER CORPORATION water have lead?
Lead in drinking water typically comes from household plumbing, not from OAKLEY VALLEY WATER CORPORATION's treatment plant. See the Lead & Copper section on this page for the most recent 90th-percentile lead test results. If your home was built before 1986, consider running cold water for 30 seconds before drinking and using an NSF/ANSI 53-certified filter.
Related water quality pages
Lead & Copper
What To Do
Violations
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