Calaveras County, California
21 ZIP codes · Avg score 81/100 · Grade B · Updated
ZipCheckup grade for Calaveras County: B.
This ZIP looks solid, with a few items worth a quick check.
Throughout Calaveras County, the 21 monitored ZIP codes show low violation rates and healthy safety scores - a pattern that puts the county well above the state baseline for drinking water quality.
How Calaveras County Compares
How Calaveras County Compares
Calaveras County scores 5 points above the California state average (76/100) and 8 points above the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Calaveras County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.8 (asthma 10.3%, diabetes 13.2%)
Estimated additional annual cost per homeowner: $2,218, driven primarily by wildfire
51.3% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across Calaveras County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 5 violations. Past 5 years: 13 total (13 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $2,218
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
27,955 housing units in Calaveras County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Calaveras County
Remediation costs are relatively manageable for most homeowners in Calaveras County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Calaveras County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Calaveras County
8 community water systems serving Calaveras County.
- B
- B
- B
- B
- B
- B
Show all 8 water systems
- B
- B
9 total water systems serve Calaveras County.
Systems with the most violations in Calaveras County
3 water systems with recorded EPA violations.
- B
- B
- B
All ZIP Codes in Calaveras County
21 ZIP codes tracked in Calaveras County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 95224 | Avery | 83 | B | 0 | — |
| 2 | 95226 | Campo Seco | 83 | B | 0 | — |
| 3 | 95228 | Copperopolis | 83 | B | 0 | $453K |
| 4 | 95245 | Mokelumne Hill | 83 | B | 0 | $425K |
| 5 | 95252 | Valley Springs | 83 | B | 0 | $444K |
| 6 | 95247 | Murphys | 82 | B | 2 (2 health) | $514K |
| 7 | 95223 | Arnold | 81 | B | 3 (3 health) | $476K |
| 8 | 95222 | Angels Camp | 78 | B | 4 (3 health) | $488K |
| 9 | 95249 | San Andreas | 78 | B | 4 (3 health) | $409K |
| 10 | 95251 | Vallecito | 78 | B | 4 (3 health) | $390K |
| 11 | 95221 | Altaville | — | — | — | |
| 12 | 95225 | Burson | — | — | 0 | $572K |
| 13 | 95229 | Douglas Flat | — | — | — | |
| 14 | 95232 | Glencoe | — | — | $385K | |
| 15 | 95233 | Hathaway Pines | — | — | $298K | |
| 16 | 95246 | Mountain Ranch | — | — | 0 | $409K |
| 17 | 95248 | Rail Road Flat | — | — | — | |
| 18 | 95250 | San Andreas | — | — | — | |
| 19 | 95254 | Wallace | — | — | 0 | $456K |
| 20 | 95255 | West Point | — | — | 0 | $272K |
| 21 | 95257 | Wilseyville | — | — | $336K |
Recommended Buyer Guides for Calaveras County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Lead Paint Test Kits — 51.3% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Deep Dive Reports
Detailed analysis for Calaveras County, California
Overview
Calaveras County in California covers 21 tracked ZIP records with an average Home Safety Score of B (81/100) across 10 scored records.
5 of 14 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 6 health-based violations appear in the available health breakdown.
← Back to California Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.