Alameda County, California
67 ZIP codes · Home Safety Score unavailable · 0 of 67 tracked ZIP records scored · Updated
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: Alameda County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 9.7 (asthma 8.8%, diabetes 11%)
Estimated additional annual cost per homeowner: $2,314, driven primarily by sea_level
75.1% of homes built before 1978 (lead paint era)
Violation History (2023–2024)
→ Stable trendEPA violation counts by year across Alameda County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 14 violations. Past 5 years: 22 total (22 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: $2,314
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
602,074 housing units in Alameda 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 Alameda County
Remediation costs are relatively manageable for most homeowners in Alameda 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 Alameda County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Alameda County
8 community water systems serving Alameda County.
Show all 8 water systems
13 total water systems serve Alameda County.
All ZIP Codes in Alameda County
67 ZIP codes tracked in Alameda County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 94501 | Alameda | — | — | 0 | $1213K |
| 2 | 94502 | Alameda | — | — | 0 | $1183K |
| 3 | 94536 | Fremont | — | — | 0 | $1210K |
| 4 | 94537 | Fremont | — | — | — | |
| 5 | 94538 | Fremont | — | — | 0 | $1105K |
| 6 | 94539 | Fremont | — | — | 0 | $1878K |
| 7 | 94540 | Hayward | — | — | — | |
| 8 | 94541 | Hayward | — | — | 0 | $782K |
| 9 | 94542 | Hayward | — | — | 0 | $1086K |
| 10 | 94543 | Hayward | — | — | — | |
| 11 | 94544 | Hayward | — | — | 0 | $802K |
| 12 | 94545 | Hayward | — | — | 0 | $839K |
| 13 | 94546 | Castro Valley | — | — | 0 | $976K |
| 14 | 94551 | Livermore | — | — | 0 | $931K |
| 15 | 94552 | Castro Valley | — | — | 2 (1 health) | $1286K |
| 16 | 94555 | Fremont | — | — | 0 | $1295K |
| 17 | 94557 | Hayward | — | — | — | |
| 18 | 94560 | Newark | — | — | 0 | $1094K |
| 19 | 94566 | Pleasanton | — | — | 0 | $1592K |
| 20 | 94568 | Dublin | — | — | 0 | $1224K |
| 21 | 94577 | San Leandro | — | — | 0 | $825K |
| 22 | 94578 | San Leandro | — | — | 0 | $794K |
| 23 | 94579 | San Leandro | — | — | 0 | $816K |
| 24 | 94580 | San Lorenzo | — | — | 0 | $820K |
| 25 | 94586 | Sunol | — | — | 0 | $1558K |
| 26 | 94587 | Union City | — | — | 0 | $1058K |
| 27 | 94588 | Pleasanton | — | — | 0 | $1277K |
| 28 | 94601 | Oakland | — | — | 0 | $703K |
| 29 | 94602 | Oakland | — | — | 0 | $1112K |
| 30 | 94603 | Oakland | — | — | 0 | $596K |
| 31 | 94604 | Oakland | — | — | — | |
| 32 | 94605 | Oakland | — | — | 0 | $841K |
| 33 | 94606 | Oakland | — | — | 0 | $748K |
| 34 | 94607 | Oakland | — | — | 0 | $745K |
| 35 | 94608 | Emeryville | — | — | 0 | $827K |
| 36 | 94609 | Oakland | — | — | 0 | $1148K |
| 37 | 94610 | Oakland | — | — | 0 | $1325K |
| 38 | 94611 | Oakland | — | — | 0 | $1485K |
| 39 | 94612 | Oakland | — | — | 0 | $814K |
| 40 | 94613 | Oakland | — | — | 0 | — |
| 41 | 94614 | Oakland | — | — | — | |
| 42 | 94615 | Oakland | — | — | — | |
| 43 | 94617 | Oakland | — | — | — | |
| 44 | 94618 | Oakland | — | — | 0 | $1789K |
| 45 | 94619 | Oakland | — | — | 0 | $997K |
| 46 | 94620 | Piedmont | — | — | — | |
| 47 | 94621 | Oakland | — | — | 0 | $538K |
| 48 | 94622 | Oakland | — | — | — | |
| 49 | 94623 | Oakland | — | — | — | |
| 50 | 94624 | Oakland | — | — | — | |
| 51 | 94649 | Oakland | — | — | — | |
| 52 | 94659 | Oakland | — | — | — | |
| 53 | 94660 | Oakland | — | — | — | |
| 54 | 94661 | Oakland | — | — | — | |
| 55 | 94662 | Emeryville | — | — | — | |
| 56 | 94666 | Oakland | — | — | — | |
| 57 | 94701 | Berkeley | — | — | — | |
| 58 | 94702 | Berkeley | — | — | 0 | $1168K |
| 59 | 94703 | Berkeley | — | — | 0 | $1273K |
| 60 | 94704 | Berkeley | — | — | 0 | $919K |
| 61 | 94705 | Berkeley | — | — | 0 | $1892K |
| 62 | 94706 | Albany | — | — | 0 | $1188K |
| 63 | 94707 | Berkeley | — | — | 0 | $1627K |
| 64 | 94709 | Berkeley | — | — | 0 | $1241K |
| 65 | 94710 | Berkeley | — | — | 0 | $1085K |
| 66 | 94712 | Berkeley | — | — | — | |
| 67 | 94720 | Berkeley | — | — | 0 | — |
Recommended Buyer Guides for Alameda County
Strictly editorial - no paid placements influence which guides appear; the selection draws on NSF certifications and EPA detection records for water systems serving this county.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 75.1% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Alameda County, California
Overview
Alameda County in California covers 67 tracked ZIP records. No Home Safety Score is published because the required model evidence is incomplete for every tracked record; missing evidence is not treated as zero.
1 of 47 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 1 health-based violation 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.