Data source: EPA SDWIS Last verified: 2026-07-19

ZipCheckup compares 81 ZIP codes across San Diego, CA. The area averages a grade C (60/100); 81 ZIP codes carry recorded EPA violations.

Water quality varies significantly across San Diego, CA. We analyzed 81 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.

City Overview: Grade C (60/100)

Grade	Neighborhoods	%
A	0	0%
B	0	0%
C	80	99%
D	0	0%
F	1	1%

Neighborhood Rankings

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

Rank	ZIP Code	Score	Grade	Violations	Lead Risk
1	92104	65	C	13	0.0107 mg/L
2	92111	65	C	13	0.0107 mg/L
3	92119	65	C	13	0.0107 mg/L
4	92122	65	C	13	0.0107 mg/L
5	92123	65	C	13	0.0107 mg/L
6	92124	65	C	13	0.0107 mg/L
7	92126	65	C	13	0.0107 mg/L
8	92127	65	C	13	0.0107 mg/L
9	92128	65	C	13	0.0107 mg/L
10	92129	65	C	13	0.0107 mg/L
11	92130	65	C	13	0.0107 mg/L
12	92131	65	C	13	0.0107 mg/L
13	92139	65	C	13	0.0107 mg/L
14	92102	60	C	13	0.0107 mg/L
15	92103	60	C	13	0.0107 mg/L
16	92105	60	C	13	0.0107 mg/L
17	92106	60	C	13	0.0107 mg/L
18	92107	60	C	13	0.0107 mg/L
19	92110	60	C	13	0.0107 mg/L
20	92112	60	C	13	0.0107 mg/L
21	92114	60	C	13	0.0107 mg/L
22	92115	60	C	13	0.0107 mg/L
23	92116	60	C	13	0.0107 mg/L
24	92117	60	C	13	0.0107 mg/L
25	92132	60	C	13	0.0107 mg/L
26	92133	60	C	13	0.0107 mg/L
27	92134	60	C	13	0.0107 mg/L
28	92135	60	C	13	0.0107 mg/L
29	92136	60	C	13	0.0107 mg/L
30	92137	60	C	13	0.0107 mg/L
31	92138	60	C	13	0.0107 mg/L
32	92140	60	C	13	0.0107 mg/L
33	92142	60	C	13	0.0107 mg/L
34	92145	60	C	13	0.0107 mg/L
35	92147	60	C	13	0.0107 mg/L
36	92149	60	C	13	0.0107 mg/L
37	92150	60	C	13	0.0107 mg/L
38	92152	60	C	13	0.0107 mg/L
39	92153	60	C	13	0.0107 mg/L
40	92154	60	C	13	0.0107 mg/L
41	92155	60	C	13	0.0107 mg/L
42	92158	60	C	13	0.0107 mg/L
43	92159	60	C	13	0.0107 mg/L
44	92160	60	C	13	0.0107 mg/L
45	92161	60	C	13	0.0107 mg/L
46	92162	60	C	13	0.0107 mg/L
47	92163	60	C	13	0.0107 mg/L
48	92164	60	C	13	0.0107 mg/L
49	92165	60	C	13	0.0107 mg/L
50	92166	60	C	13	0.0107 mg/L
51	92167	60	C	13	0.0107 mg/L
52	92168	60	C	13	0.0107 mg/L
53	92169	60	C	13	0.0107 mg/L
54	92170	60	C	13	0.0107 mg/L
55	92171	60	C	13	0.0107 mg/L
56	92172	60	C	13	0.0107 mg/L
57	92174	60	C	13	0.0107 mg/L
58	92175	60	C	13	0.0107 mg/L
59	92176	60	C	13	0.0107 mg/L
60	92177	60	C	13	0.0107 mg/L
61	92179	60	C	13	0.0107 mg/L
62	92182	60	C	13	0.0107 mg/L
63	92184	60	C	13	0.0107 mg/L
64	92186	60	C	13	0.0107 mg/L
65	92187	60	C	13	0.0107 mg/L
66	92190	60	C	13	0.0107 mg/L
67	92191	60	C	13	0.0107 mg/L
68	92192	60	C	13	0.0107 mg/L
69	92193	60	C	13	0.0107 mg/L
70	92194	60	C	13	0.0107 mg/L
71	92195	60	C	13	0.0107 mg/L
72	92196	60	C	13	0.0107 mg/L
73	92197	60	C	13	0.0107 mg/L
74	92198	60	C	13	0.0107 mg/L
75	92199	60	C	13	0.0107 mg/L
76	92108	55	C	13	0.0107 mg/L
77	92109	55	C	13	0.0107 mg/L
78	92113	55	C	13	0.0107 mg/L
79	92120	55	C	13	0.0107 mg/L
80	92121	55	C	13	0.0107 mg/L
81	92101	35	F	13	0.0107 mg/L

How Neighborhoods Compare

Each ZIP code compared to county and state averages:

• 0 neighborhoods score better than county average
• 81 neighborhoods score worse than county average

EPA Violations

• 1,053 total violations across San Diego
• 324 health-based violations
• 81 of 81 ZIP codes have violations
• 0 ZIP codes exceed EPA lead action level

Top Contaminants

Contaminant	Violations	ZIPs
Consumer Confidence Report Rule	648	81
Total Coliform	162	81
Stage 2 DBP Rule	162	81
Stage 1 DBP Rule	81	81

Frequently Asked Questions

What is the safest neighborhood in San Diego?

ZIP code 92104 has the highest safety score in San Diego at 65/100 (grade C). Check the full report for details.

Is San Diego water safe to drink?

San Diego has an average water safety score of 60/100 (C). Water quality varies by neighborhood — no ZIP codes currently exceed EPA lead limits. Always check your specific ZIP code.

Related Pages

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

Data Sources

• EPA SDWIS
• U.S. Census Bureau

Updated daily.