Oxnard, CA: 7 Health Violations — 62/100 (2026)
7 ZIP codes · 15 water systems · Updated 2026-06-03
Within Oxnard, water safety data for CA reveals moderate quality — federal standards are generally met, but documented exceptions exist in specific service areas.
How Oxnard Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Oxnard, CA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Oxnard's 7 ZIP codes.
Key Facts for Oxnard Residents
- Your city's water systems recorded 21 violations in the past 5 years.
- Average lead level: 0.0022 mg/L.
- Estimated remediation: $2,357 per household.
- CDC health risk index: 10.84.
Oxnard's Water Providers
Federal drinking water records identify 15 systems in Oxnard, CA. The leading 3 providers serve the largest share of residential connections, each operating as a separate entity with its own rate authority, infrastructure management, and EPA compliance obligations — so service conditions are not uniform city-wide.
Overview
We track water quality and home safety data for 7 ZIP codes in Oxnard, California (population ~213,469), covering 15 community water systems serving approximately 379,390 people region-wide.
7 of 7 ZIP codes (100%) have recorded EPA violations. 7 health-based violations documented.
Home Safety Score
Average Home Safety Score for Oxnard: C (62/100)
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
Oxnard water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0022 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 7 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Technique | 16 | 7 |
| Surface Water Treatment Rule | Treatment Technique | 8 | 7 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 93030 | C | 3 | 1 | Oxnard Water Department |
| 93031 | C | 3 | 1 | Oxnard Water Department |
| 93032 | C | 3 | 1 | Oxnard Water Department |
| 93033 | C | 3 | 1 | Oxnard Water Department |
| 93034 | C | 3 | 1 | Oxnard Water Department |
| 93035 | C | 3 | 1 | Oxnard Water Department |
| 93036 | C | 3 | 1 | Oxnard Water Department |
All ZIP Codes in Oxnard
- 93030 [C] — 3 violations ⚠
- 93031 [C] — 3 violations ⚠
- 93032 [C] — 3 violations ⚠
- 93033 [C] — 3 violations ⚠
- 93034 [C] — 3 violations ⚠
- 93035 [C] — 3 violations ⚠
- 93036 [C] — 3 violations ⚠
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.
Oxnard Community Health Snapshot
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
What's in Oxnard's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Remediation Costs Compare in Oxnard
When estimated remediation is placed alongside median property values in Oxnard, the resulting ratio is low — a finding consistent with a household financial perspective where documented issues can be addressed without a meaningful impact on overall equity position, making this market one of the more favorable contexts for remediation planning.
Remediation costs in Oxnard are relatively low compared to home values. The $1,521–$3,386 estimated range is a small fraction of median property value. Home values are 12% below the California average.
Oxnard: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in Oxnard appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Oxnard: Flood History & Water Damage Risk
FEMA data shows 71% of Oxnard's ZIP codes mapped into designated flood zones, paired with an NFIP record of 101 claims. That footprint places local flood exposure in the range where it warrants attention without rising to high-severity planning territory.
Oxnard has a moderate flood history with 101 FEMA claims averaging $4,085 per payout. 71% 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>$2,357</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.
What You Can Do in Oxnard
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. Filters rated for Stage 2 DBP Rule can reduce the most common contaminant found in Oxnard's water.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for Oxnard, CA