Data source: ZipCheckup Home Safety Score registry; EPA SDWIS; EPA radon; EPA AirNow

ZipCheckup compares 57 ZIP codes across San Jose, CA. Water systems associated with 25 ZIP codes have recorded EPA violations; safety scores are not available for every area.

Home-safety conditions vary across San Jose, CA. We compared 57 ZIP codes using the current versioned Home Safety Score. Water compliance remains one component alongside PFAS screening, radon, and annual air quality.

Neighborhood Rankings

Mapped ZIP codes in San Jose ranked by Home Safety Score:

Rank	ZIP Code	Score	Grade	Violations	Lead Risk
1	95101	—	—	—	No data
2	95103	—	—	—	No data
3	95106	—	—	—	No data
4	95108	—	—	—	No data
5	95109	—	—	—	No data
6	95110	—	—	1	No data
7	95111	—	—	1	No data
8	95112	—	—	3	0.0025 mg/L
9	95113	—	—	1	No data
10	95115	—	—	—	No data
11	95116	—	—	1	No data
12	95117	—	—	1	0.0027 mg/L
13	95118	—	—	1	No data
14	95119	—	—	1	No data
15	95120	—	—	1	No data
16	95121	—	—	1	No data
17	95122	—	—	1	No data
18	95123	—	—	1	No data
19	95124	—	—	3	No data
20	95125	—	—	1	No data
21	95126	—	—	1	0.0027 mg/L
22	95127	—	—	3	0.0007 mg/L
23	95128	—	—	1	0.0027 mg/L
24	95129	—	—	1	No data
25	95130	—	—	1	No data
26	95131	—	—	3	0.0025 mg/L
27	95132	—	—	1	No data
28	95133	—	—	1	No data
29	95134	—	—	3	0.0025 mg/L
30	95135	—	—	0	No data
31	95136	—	—	1	No data
32	95138	—	—	0	No data
33	95139	—	—	0	No data
34	95141	—	—	—	No data
35	95148	—	—	1	0.0007 mg/L
36	95150	—	—	—	No data
37	95151	—	—	—	No data
38	95152	—	—	—	No data
39	95153	—	—	—	No data
40	95154	—	—	—	No data
41	95155	—	—	—	No data
42	95156	—	—	—	No data
43	95157	—	—	—	No data
44	95158	—	—	—	No data
45	95159	—	—	—	No data
46	95160	—	—	—	No data
47	95161	—	—	—	No data
48	95164	—	—	—	No data
49	95170	—	—	—	No data
50	95172	—	—	—	No data
51	95173	—	—	—	No data
52	95190	—	—	—	No data
53	95191	—	—	—	No data
54	95192	—	—	—	No data
55	95193	—	—	—	No data
56	95194	—	—	—	No data
57	95196	—	—	—	No data

How Neighborhoods Compare

Each ZIP code compared to county and state averages:

EPA Violations

• 7 total violations since 2021 across the water systems mapped to San Jose ZIP codes (each system counted once; includes small systems beyond the city utility)
• 3 health-based violation records in the available EPA data
• 25 of 28 directly mapped ZIP records are mapped to water systems with recorded violations
• 0 of 28 ZIP records with known lead status are served by a system whose 90th-percentile lead result exceeded the EPA action level

Top Contaminants

Contaminant	Violations	ZIPs
Surface Water Treatment Rule	25	25
Revised Total Coliform Rule	6	3
Lead and Copper Rule Revisions	4	2

Frequently Asked Questions

Which ZIP code in San Jose has the highest home safety score?

Is San Jose water safe to drink?

The Home Safety Score is not a drinking-water grade. Across 28 directly mapped ZIP records, 7 EPA violations are recorded; 0 of 28 records with known lead status exceed the action level. Check the specific ZIP and serving system before drawing a property-level conclusion.

Related Pages

• San Jose, CA city page
• California state rankings
• All California alerts

Data Sources

• EPA SDWIS
• U.S. Census Bureau

Reporting periods vary by source; the page metadata identifies this materialization.