Which California Areas Have the Most Galvanized Pipe Risk?

The 50 California areas with the highest share of confirmed galvanized service lines requiring replacement, out of 492 areas with enough data for a reliable estimate. Galvanized steel isn't lead itself, but a line installed downstream of a lead gooseneck or connector can leach lead particles trapped in its rough interior even after the original lead pipe is gone — federal guidance treats it with the same urgency as a confirmed lead line.

See which areas have the most lead risk →

#	Area	Galvanized	% of addresses
1	Oakdale	2,306	24.9%
2	Norwalk	747	13.3%
3	Chester	201	11.3%
4	Yucaipa	1,462	9.1%
5	Sonoma	483	9.1%
6	Gonzales	122	6.1%
7	Chino	791	3.5%
8	Greenfield	144	3.4%
9	El Segundo	141	3.1%
10	Cayucos	65	2.9%
11	Grass Valley	154	2.0%
12	Riverbank	134	1.8%
13	Ceres	182	1.5%
14	Pixley	14	1.3%
15	Cloverdale	35	1.0%
16	Oakland	3,935	1.0%
17	Tustin	130	0.9%
18	Victorville	408	0.9%
19	Lemoore	25	0.8%
20	Tulare	142	0.7%
21	Ridgecrest	78	0.6%
22	Petaluma	122	0.6%
23	Banning	81	0.6%
24	Lancaster	21	0.5%
25	Guadalupe	10	0.4%
26	San Francisco	653	0.4%
27	Orland	10	0.3%
28	Fairfield	91	0.3%
29	San Luis Obispo	45	0.2%
30	Bermuda Dunes	5	0.2%
31	Placerville	78	0.2%
32	Napa	48	0.2%
33	Santa Maria	60	0.1%
34	Oakhurst	3	0.1%
35	Delhi	3	0.1%
36	Lynwood	12	0.1%
37	Palmdale	37	0.1%
38	Arcata	9	0.1%
39	Madera	27	0.1%
40	Benicia	10	0.1%
41	Modesto	62	0.1%
42	Hanford	17	0.1%
43	Fallbrook	13	0.1%
44	Paso Robles	9	0.1%
45	Buena Park	12	0.1%
46	Delano	6	0.1%
47	Adelanto	5	0.1%
48	Morgan Hill	8	0.0%
49	Anaheim	43	0.0%
50	Santa Rosa	21	0.0%