Amador County, California
18 ZIP codes · Avg score 62/100 · Grade C · Updated 2026-06-03
Tracking 18 ZIP codes in Amador County reveals a mixed picture — tap water quality varies meaningfully by location.
How Amador County Compares
How Amador County Compares
Amador County scores 11 points below the California state average (73/100) and 6 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Amador County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.1 (asthma 10%, diabetes 12.2%)
Estimated additional annual cost per homeowner: $1,826, driven primarily by wildfire
Infrastructure: 0.334% avg pipe failure probability, 29% of ZIPs at high risk
55.9% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
↓ Improving trendEPA violation counts by year across Amador County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 8 violations. Past 5 years: 19 total (19 health-based). Health-based violations are declining versus the prior 2-year window.
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
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,826
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
20,208 housing units in Amador 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 Amador County
Remediation costs are relatively manageable for most homeowners in Amador 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 Amador County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Amador County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Awa, Tanner | 4,940 | 17 |
| 2 | Awa, Ione | 7,227 | 13 |
| 3 | City of Plymouth, | 1,060 | 11 |
| 4 | PINE GROVE COMM SERV DIST | 1,141 | 10 |
| 5 | AWA BUCKHORN PLANT | 8,791 | 10 |
22 total water systems serve Amador County.
All ZIP Codes in Amador County
18 ZIP codes tracked in Amador County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 95640 | Ione | 81 | B | 2 | $432K |
| 2 | 95669 | Plymouth | 80 | B | 5 (3 health) | $538K |
| 3 | 95689 | Volcano | 75 | B | 1 | $406K |
| 4 | 95675 | River Pines | 71 | B | 2 (1 health) | — |
| 5 | 95642 | Jackson | 70 | B | 3 (2 health) | $471K |
| 6 | 95685 | Sutter Creek | 69 | C | 3 (1 health) | $547K |
| 7 | 95225 | Burson | 63 | C | 0 | $572K |
| 8 | 95226 | Campo Seco | 63 | C | 0 | — |
| 9 | 95245 | Mokelumne Hill | 63 | C | 0 | $425K |
| 10 | 95601 | Amador City | 63 | C | 0 | $351K |
| 11 | 95666 | Pioneer | 63 | C | 0 | $348K |
| 12 | 95232 | Glencoe | 53 | D | 0 | $385K |
| 13 | 95234 | Holt | 53 | D | 0 | — |
| 14 | 95254 | Wallace | 53 | D | 0 | $456K |
| 15 | 95654 | Martell | 53 | D | 0 | — |
| 16 | 95656 | Mount Aukum | 53 | D | 0 | — |
| 17 | 95699 | Drytown | 53 | D | 0 | — |
| 18 | 95665 | Pine Grove | 45 | D | 3 (1 health) | $371K |
Recommended Buyer Guides for Amador County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance — guides surface only when county data warrants them.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 55.9% 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 Amador County, California
Overview
Amador County in California covers 18 ZIP codes with an average Home Safety Score of C (62/100).
7 of 18 ZIP codes have recorded EPA violations. 8 health-based violations have been documented.
← Back to California water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.