Data source: EPA SDWIS Last verified: 2026-06-04

Water quality varies significantly across San Francisco, CA. We analyzed 60 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.

City Overview: Grade C (55/100)

Grade	Neighborhoods	%
A	0	0%
B	0	0%
C	20	33%
D	40	67%
F	0	0%

Neighborhood Rankings

Every ZIP code in San Francisco ranked by Home Safety Score:

Rank	ZIP Code	Score	Grade	Violations	Lead Risk
1	94102	59	C	7	0.0031 mg/L
2	94103	59	C	7	0.0031 mg/L
3	94104	59	C	7	0.0031 mg/L
4	94105	59	C	7	0.0031 mg/L
5	94107	59	C	7	0.0031 mg/L
6	94108	59	C	7	0.0031 mg/L
7	94109	59	C	7	0.0031 mg/L
8	94110	59	C	7	0.0031 mg/L
9	94114	59	C	7	0.0031 mg/L
10	94115	59	C	7	0.0031 mg/L
11	94118	59	C	7	0.0031 mg/L
12	94120	59	C	7	0.0031 mg/L
13	94121	59	C	7	0.0031 mg/L
14	94122	59	C	7	0.0031 mg/L
15	94123	59	C	7	0.0031 mg/L
16	94124	59	C	7	0.0031 mg/L
17	94127	59	C	7	0.0031 mg/L
18	94131	59	C	7	0.0031 mg/L
19	94132	59	C	7	0.0031 mg/L
20	94133	59	C	7	0.0031 mg/L
21	94111	54	D	7	0.0031 mg/L
22	94112	54	D	7	0.0031 mg/L
23	94116	54	D	7	0.0031 mg/L
24	94101	53	D	7	0.0031 mg/L
25	94117	53	D	7	0.0031 mg/L
26	94119	53	D	7	0.0031 mg/L
27	94125	53	D	7	0.0031 mg/L
28	94126	53	D	7	0.0031 mg/L
29	94128	53	D	7	0.0031 mg/L
30	94129	53	D	7	0.0031 mg/L
31	94130	53	D	7	0.0031 mg/L
32	94134	53	D	7	0.0031 mg/L
33	94136	53	D	7	0.0031 mg/L
34	94137	53	D	7	0.0031 mg/L
35	94139	53	D	7	0.0031 mg/L
36	94140	53	D	7	0.0031 mg/L
37	94141	53	D	7	0.0031 mg/L
38	94142	53	D	7	0.0031 mg/L
39	94143	53	D	7	0.0031 mg/L
40	94144	53	D	7	0.0031 mg/L
41	94145	53	D	7	0.0031 mg/L
42	94146	53	D	7	0.0031 mg/L
43	94147	53	D	7	0.0031 mg/L
44	94150	53	D	7	0.0031 mg/L
45	94151	53	D	7	0.0031 mg/L
46	94153	53	D	7	0.0031 mg/L
47	94154	53	D	7	0.0031 mg/L
48	94156	53	D	7	0.0031 mg/L
49	94158	53	D	7	0.0031 mg/L
50	94159	53	D	7	0.0031 mg/L
51	94160	53	D	7	0.0031 mg/L
52	94161	53	D	7	0.0031 mg/L
53	94162	53	D	7	0.0031 mg/L
54	94163	53	D	7	0.0031 mg/L
55	94164	53	D	7	0.0031 mg/L
56	94171	53	D	7	0.0031 mg/L
57	94172	53	D	7	0.0031 mg/L
58	94175	53	D	7	0.0031 mg/L
59	94177	53	D	7	0.0031 mg/L
60	94188	53	D	7	0.0031 mg/L

How Neighborhoods Compare

Each ZIP code compared to county and state averages:

• 20 neighborhoods score better than county average
• 40 neighborhoods score worse than county average

EPA Violations

• 420 total violations across San Francisco
• 360 health-based violations
• 60 of 60 ZIP codes have violations
• 0 ZIP codes exceed EPA lead action level

Top Contaminants

Contaminant	Violations	ZIPs
Contaminant 0700	360	60
Lead	60	60

Frequently Asked Questions

What is the safest neighborhood in San Francisco?

ZIP code 94102 has the highest safety score in San Francisco at 59/100 (grade C). Check the full report for details.

Is San Francisco water safe to drink?

San Francisco has an average water safety score of 55/100 (C). Water quality varies by neighborhood — no ZIP codes currently exceed EPA lead limits. Always check your specific ZIP code.

Related Pages

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

Data Sources

• EPA SDWIS
• U.S. Census Bureau

Updated daily.