Tracy, CA: 5 Health Violations — 93/100 (2026)
5 ZIP codes · 9 water systems · Updated 2026-06-03
How does Tracy tap water hold up under EPA scrutiny? Above average for CA — documented violations are uncommon and the safety grade reflects a clean overall record.
How Tracy Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Tracy, CA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Tracy's 5 ZIP codes.
Key Facts for Tracy Residents
- Your city's water systems recorded 10 violations in the past 5 years.
- Average lead level: 0.0009 mg/L.
- Homes built before 1986: 27% — older plumbing may contain lead solder.
- Estimated remediation: $1,260 per household.
- CDC health risk index: 11.38.
Tracy's Water Providers
Throughout Tracy, CA, water comes from one of 3 primary utilities out of 9 total systems — independent providers with different rate structures, infrastructure, and compliance records that vary across the service territory.
Overview
We track water quality and home safety data for 5 ZIP codes in Tracy, California, covering 9 community water systems serving approximately 131,046 people.
5 of 5 ZIP codes (100%) have recorded EPA violations. 5 health-based violations documented.
Home Safety Score
Average Home Safety Score for Tracy: A (93/100)
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
Tracy water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0009 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 5 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 12 | 5 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 95304 | B | 2 | 1 | City of Tracy, |
| 95376 | A | 2 | 1 | City of Tracy, |
| 95377 | A | 2 | 1 | City of Tracy, |
| 95378 | A | 2 | 1 | City of Tracy, |
| 95391 | A | 2 | 1 | City of Livermore |
All ZIP Codes in Tracy
- 95304 [B] — 2 violations ⚠
- 95376 [A] — 2 violations ⚠
- 95377 [A] — 2 violations ⚠
- 95378 [A] — 2 violations ⚠
- 95391 [A] — 2 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.
Tracy 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 Tracy's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Tracy Infrastructure Age
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Post-1986 construction is where the lower lead-solder risk lives, because that's when the federal ban on lead solder in plumbing took effect. In Tracy, where the median build year is 1996, the housing stock falls broadly on the newer side of that threshold — a distribution that moderates aggregate plumbing-era risk compared to older housing markets.
Most homes in Tracy were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Tracy
Across Tracy, the equity share taken up by estimated remediation is small — a favorable ratio for most property owners.
Remediation costs in Tracy are relatively low compared to home values. The $790–$1,960 estimated range is a small fraction of median property value. Home values are 16% above the California average.
Tracy: 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.
Since the federal solder ban took effect, new plumbing has been built without that pathway, and Tracy's pre-rule stock at 27% reflects a contained footprint.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Tracy: Flood History & Water Damage Risk
How does Tracy's flood record connect to local water quality? The NFIP documents 67 claims — enough to signal recurring events — and 60% 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.
Tracy has a moderate flood history with 67 FEMA claims averaging $18,359 per payout. 60% 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>$1,260</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 Tracy, CA