San Joaquin County, California
44 ZIP codes · Avg score 85/100 · Grade A
ZipCheckup grade for San Joaquin County: A.
Checked records flag no major concern; missing data is unknown.
San Joaquin County: upper grades, 44 ZIPs.
How San Joaquin County Compares
How San Joaquin County Compares
San Joaquin County scores 9 points above the California state average (76/100) and 12 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
ZIP Code Risk Map
Water Quality Map: San Joaquin County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.4 (asthma 9.5%, diabetes 12.3%)
Modeled additional annual cost estimate per homeowner: $1,401, largest modeled factor: Flood
45% of homes built before 1980 (lead paint was banned for residential use in 1978)
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 DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,401
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
262,396 housing units in San Joaquin 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 San Joaquin County
Modeled remediation costs in San Joaquin County can be compared with the median property value; actual costs vary by property.
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 San Joaquin County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to San Joaquin County ZIP codes
8 community water systems mapped to San Joaquin County ZIP codes; EPA may list more systems serving the county.
- B
- B
- A
- B
- A
- B
Show all 8 water systems
- B
- B
34 water systems mapped to San Joaquin County ZIP codes in our data; EPA may list more systems serving the county.
Systems with the most violations in San Joaquin County
3 water systems with violations in EPA records.
- B
- A
- B
All ZIP Codes in San Joaquin County
44 ZIP codes tracked in San Joaquin County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 95304 | Tracy | 100 | A | 0 | $869K |
| 2 | 95320 | Escalon | 100 | A | 0 | $490K |
| 3 | 95376 | Tracy | 100 | A | 0 | $588K |
| 4 | 95391 | Tracy | 100 | A | 0 | $860K |
| 5 | 95632 | Galt | 96 | A | 2 (1 health) | $488K |
| 6 | 95202 | Stockton | 83 | B | 0 | $322K |
| 7 | 95203 | Stockton | 83 | B | 0 | $350K |
| 8 | 95204 | Stockton | 83 | B | 0 | $358K |
| 9 | 95211 | Stockton | 83 | B | 0 | — |
| 10 | 95215 | Stockton | 83 | B | 0 | $379K |
| 11 | 95258 | Woodbridge | 83 | B | 0 | $554K |
| 12 | 95330 | Lathrop | 83 | B | 1 | $605K |
| 13 | 95337 | Manteca | 83 | B | 1 | $611K |
| 14 | 95366 | Ripon | 83 | B | 1 | $673K |
| 15 | 95205 | Stockton | 81 | B | 4 (2 health) | $289K |
| 16 | 95206 | Stockton | 81 | B | 4 (2 health) | $389K |
| 17 | 95207 | Stockton | 81 | B | 4 (2 health) | $409K |
| 18 | 95209 | Stockton | 81 | B | 4 (2 health) | $465K |
| 19 | 95210 | Stockton | 81 | B | 4 (2 health) | $337K |
| 20 | 95212 | Stockton | 81 | B | 4 (2 health) | $499K |
| 21 | 95219 | Stockton | 81 | B | 4 (2 health) | $540K |
| 22 | 95231 | French Camp | 81 | B | 4 (2 health) | $478K |
| 23 | 95240 | Lodi | 81 | B | 4 (2 health) | $444K |
| 24 | 95242 | Lodi | 81 | B | 4 (2 health) | $550K |
| 25 | 95336 | Manteca | 81 | B | 5 (2 health) | $523K |
| 26 | 95201 | Stockton | — | — | — | |
| 27 | 95208 | Stockton | — | — | — | |
| 28 | 95213 | Stockton | — | — | — | |
| 29 | 95214 | Stockton | — | — | — | |
| 30 | 95220 | Acampo | — | — | $719K | |
| 31 | 95227 | Clements | — | — | $730K | |
| 32 | 95230 | Farmington | — | — | 0 | $611K |
| 33 | 95234 | Holt | — | — | — | |
| 34 | 95236 | Linden | — | — | $648K | |
| 35 | 95237 | Lockeford | — | — | 0 | $423K |
| 36 | 95241 | Lodi | — | — | — | |
| 37 | 95253 | Victor | — | — | — | |
| 38 | 95267 | Stockton | — | — | — | |
| 39 | 95269 | Stockton | — | — | — | |
| 40 | 95296 | Stockton | — | — | — | |
| 41 | 95297 | Stockton | — | — | — | |
| 42 | 95377 | Tracy | — | — | 0 | $774K |
| 43 | 95378 | Tracy | — | — | — | |
| 44 | 95686 | Thornton | — | — | $430K |
Recommended Buyer Guides for San Joaquin County
When no specific signal shows up in the records, the list falls back to general water testing and filtration guides rather than staying empty.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for San Joaquin County, California
Overview
San Joaquin County in California covers 44 tracked ZIP records with an average Home Safety Score of A (85/100) across 25 scored records.
15 of 28 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 3 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.