Oakville, CA Water Safety: 73/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Unlike many cities its size in CA, Oakville keeps health-based violation rates low — systems here score at or above the state average for tap water safety, with no systemic concerns flagged in the current data set.
How Oakville Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Oakville Water
- Estimated remediation: $1,200 per household.
- CDC health risk index: 11.55.
Who Supplies Your Water in Oakville
Water service in Oakville, CA is organized around a single utility — one of 1 tracked by regulator, and the one that manages the local distribution network while holding primary responsibility for EPA compliance reporting.
Overview
We track water quality and home safety data for 1 ZIP code in Oakville, California, covering 1 community water system serving approximately 2,787 people.
No EPA violations recorded across any ZIP codes in Oakville — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Oakville: B (73/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Oakville water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Oakville
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 94562 | B | TOWN OF YOUNTVILLE | 2,787 |
All ZIP Codes in Oakville
- 94562 [B]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Health Outcomes in Oakville
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Flood & Climate Risk in Oakville
How does Oakville's flood record connect to local water quality? The NFIP documents 5 claims — enough to signal recurring events — and 100% of ZIP codes carry FEMA flood zone status. That combination places flooding in the category of factors that can periodically affect water infrastructure, even if the area isn't among the highest-exposure communities in the NFIP dataset.
Oakville has a moderate flood history with 5 FEMA claims averaging $1,440 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,200</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Oakville, CA