Santa Cruz, CA: 48 Health Violations — 52/100 (2026)
6 ZIP codes · 12 water systems · Updated 2026-06-03
If you're researching Santa Cruz, CA tap water quality, the baseline finding is below average — health-based violations are documented in several service areas, and verifying the specific system at your address is the right next step.
How Santa Cruz Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Santa Cruz, CA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
How ZIP codes in Santa Cruz score across all safety grades.
What You Should Know About Santa Cruz Water
- Your city's water systems recorded 54 violations in the past 5 years.
- Average lead level: 0.001 mg/L.
- Homes built before 1986: 72% — older plumbing may contain lead solder.
- Estimated remediation: $1,500 per household.
- CDC health risk index: 10.85.
Who Supplies Your Water in Santa Cruz
With 3 utilities splitting service in Santa Cruz, CA, water accountability is distributed across 12 systems on the federal record.
Overview
We track water quality and home safety data for 6 ZIP codes in Santa Cruz, California (population ~99,985), covering 12 community water systems serving approximately 176,821 people region-wide.
6 of 6 ZIP codes (100%) have recorded EPA violations. 48 health-based violations documented.
Home Safety Score
Average Home Safety Score for Santa Cruz: D (52/100)
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
Santa Cruz water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0010 mg/L (EPA action level: 0.015 mg/L)
- 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 |
|---|---|---|---|
| Lead | Inorganic | 42 | 6 |
| Combined Radium | Radionuclides | 21 | 6 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 95060 | D | 9 | 8 | Santa Cruz Water Department |
| 95061 | C | 9 | 8 | Santa Cruz Water Department |
| 95062 | D | 9 | 8 | Santa Cruz Water Department |
| 95063 | D | 9 | 8 | Santa Cruz Water Department |
| 95064 | D | 9 | 8 | Santa Cruz Water Department |
| 95065 | D | 9 | 8 | Santa Cruz Water Department |
All ZIP Codes in Santa Cruz
- 95060 [D] — 9 violations ⚠
- 95061 [C] — 9 violations ⚠
- 95062 [D] — 9 violations ⚠
- 95063 [D] — 9 violations ⚠
- 95064 [D] — 9 violations ⚠
- 95065 [D] — 9 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.
Health Outcomes in Santa Cruz
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
Top Contaminants in Santa Cruz Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Santa Cruz
With 72% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
The median home in Santa Cruz was built in 1980 — a figure that places most of the city's residential stock in the era when lead solder was still standard in copper plumbing. Homes built before 1986 may have lead-soldered joints; those built before 1970 face the additional possibility of lead pipes in the service line itself.
Over half of homes in Santa Cruz were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Santa Cruz Homeowners
At current valuations, Santa Cruz sits in the low remediation-share tier — the equity impact of fixing documented issues is proportionally minor.
Remediation costs in Santa Cruz are relatively low compared to home values. The $900–$2,817 estimated range is a small fraction of median property value. Home values are 61% above the California average.
Lead Exposure Risk for Children in Santa Cruz
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.
Confirming what arrives at a specific faucet is something utility-side averages cannot do. With 72% of Santa Cruz stock built before the lead-solder ban and citywide monitoring at or beyond the regulatory mark, a tap-level kit fits the standard diligence picture.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Santa Cruz
255 FEMA flood insurance claims are on file for Santa Cruz, and 50% of local ZIP codes fall within federally designated flood zones — enough to put flood exposure on the planning radar, though short of the concentrated-risk threshold where treatment-system vulnerability becomes a primary consideration.
Santa Cruz has a moderate flood history with 255 FEMA claims averaging $14,745 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>$1,500</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 Santa Cruz
- 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 Lead can reduce the most common contaminant found in Santa Cruz's water.
- Check your home's plumbing. With 72% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Santa Cruz, CA