Visalia, CA: 6 Health Violations — 67/100 (2026)
6 ZIP codes · 9 water systems · Updated 2026-06-03
Visalia lands near the CA median for water safety — compliance results are mixed, and the city's middle-grade standing reflects genuine variability across service areas rather than one problem driving the whole picture.
How Visalia Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Visalia, CA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Visalia's 6 ZIP codes.
Key Facts for Visalia Residents
- Your city's water systems recorded 36 violations in the past 5 years.
- Estimated remediation: $1,600 per household.
- CDC health risk index: 12.22 — above typical levels.
Visalia's Water Providers
Structurally, Visalia, CA's water supply is divided. Federal data identifies 9 water systems in the area, with 3 providers serving the bulk of residential connections. These utilities operate independently, meaning rate-setting authority and EPA compliance accountability are distributed rather than centralized.
Overview
We track water quality and home safety data for 6 ZIP codes in Visalia, California, covering 9 community water systems serving approximately 161,978 people.
6 of 6 ZIP codes (100%) have recorded EPA violations. 6 health-based violations documented.
Home Safety Score
Average Home Safety Score for Visalia: C (67/100)
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
Visalia water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Visalia
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 6 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 |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 28 | 6 |
| Stage 2 DBP Rule | Treatment Technique | 14 | 6 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 93277 | C | 6 | 1 | Linnell Farm Labor Center |
| 93278 | C | 6 | 1 | Linnell Farm Labor Center |
| 93279 | C | 6 | 1 | Linnell Farm Labor Center |
| 93290 | C | 6 | 1 | Linnell Farm Labor Center |
| 93291 | C | 6 | 1 | The Lakes Association |
| 93292 | C | 6 | 1 | City of Tulare, |
All ZIP Codes in Visalia
- 93277 [C] — 6 violations ⚠
- 93278 [C] — 6 violations ⚠
- 93279 [C] — 6 violations ⚠
- 93290 [C] — 6 violations ⚠
- 93291 [C] — 6 violations ⚠
- 93292 [C] — 6 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.
Visalia 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 Visalia's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Remediation Costs Compare in Visalia
Across Visalia, the equity share taken up by estimated remediation is small — a favorable ratio for most property owners.
Remediation costs in Visalia are relatively low compared to home values. The $750–$2,700 estimated range is a small fraction of median property value. Home values are 55% below the California average.
Visalia: Flood History & Water Damage Risk
Measured across the NFIP's multi-decade tracking period, Visalia shows a moderate flood record — 74 claims and 50% of ZIP codes carrying FEMA flood zone status. For water quality, that combination matters because flood events at this frequency can periodically stress infrastructure: treatment plants, private wells, and distribution systems all face elevated risk during significant flooding.
Visalia has a moderate flood history with 74 FEMA claims averaging $6,487 per payout. 50% 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>$1,600</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 Visalia
- 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 Consumer Confidence Report Rule can reduce the most common contaminant found in Visalia'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 Visalia, CA