Alpine, CA: 12 Health Violations — 68/100 (2026)
2 ZIP codes · 4 water systems · Updated 2026-06-03
Drilling into federal monitoring figures for Alpine in CA, the pattern is middle-of-the-road — some utilities have documented MCL exceedances or treatment technique violations in recent years, while others have operated without a single flag, making the city's grade a genuine average rather than a rounded-down high.
How Alpine Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Alpine Water
- Your city's water systems recorded 22 violations in the past 5 years.
- Average lead level: 0.0026 mg/L.
- Estimated remediation: $1,450 per household.
- CDC health risk index: 10.18.
Who Supplies Your Water in Alpine
3 independent water providers serve Alpine, CA — 4 systems appear in federal records.
Overview
We track water quality and home safety data for 2 ZIP codes in Alpine, California (population ~18,300), covering 4 community water systems serving approximately 94,024 people region-wide.
2 of 2 ZIP codes (100%) have recorded EPA violations. 12 health-based violations documented.
Home Safety Score
Average Home Safety Score for Alpine: C (68/100)
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
Alpine water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0026 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): 2 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Combined Radium | Radionuclides | 15 | 2 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 6 | 2 |
| Stage 2 DBP Rule | Treatment Technique | 6 | 2 |
| Stage 1 DBP Rule | Treatment Technique | 3 | 2 |
| Surface Water Treatment Rule | Treatment Technique | 3 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 91901 | C | 11 | 6 | PADRE DAM MWD |
| 91903 | C | 11 | 6 | Willowside Terrace Water Association |
All ZIP Codes in Alpine
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 Alpine
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 Alpine Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Cost Context: What Remediation Means for Alpine Homeowners
Equity impact data for Alpine lands in the favorable tier — remediation claims a small slice of what properties here are worth.
Remediation costs in Alpine are relatively low compared to home values. The $850–$2,800 estimated range is a small fraction of median property value. Home values are 9% above the California average.
Lead Exposure Risk for Children in Alpine
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 Alpine 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.
Flood & Climate Risk in Alpine
The National Flood Insurance Program captures decades of claims at the local level, building a record of cumulative community flood exposure. For Alpine, that record documents 12 claims and 50% of ZIP codes inside FEMA-designated flood zones. What makes those numbers relevant to water quality is the set of mechanisms flooding activates: heavy precipitation that floods treatment intake zones can introduce contaminants upstream of normal filtration; well casings in low-lying areas can be infiltrated by floodwaters carrying bacteria, sediment, and chemical residue; and distribution system pressure changes during flooding can create backflow conditions. These effects become more probable as flood frequency and magnitude increase — and the NFIP record indicates both are meaningful factors locally.
Alpine has a moderate flood history with 12 FEMA claims averaging $1,817 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>$1,450</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 Alpine
- 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 Combined Radium can reduce the most common contaminant found in Alpine'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 Alpine, CA