California

Total Incidents:
33,351

Contaminants in Your State

Latest Boil Water Advisories

Date Reported Location Affected Number of People Affected Cause Time Lasted
September 22, 2021 Happy Valley, California Unknown Water Main Break 3 Days
August 24, 2021 San Luis Obispo, California 200 Water Main Break 2 Days
June 10, 2021 Encanto, California Unknown Water Main Break 2 Days
2020-11-17 South Lake Tahoe, California Unknown Precautionary N/A
2020-08-20 Copperopolis, California 275 Valve Repairs N/A

Counties

County
Incident Count
ALAMEDA, CA
2
ALPINE, CA
12
AMADOR, CA
93
BARNSTABLE, CA
2
BEXAR, CA
4
BONNER, CA
6
BRAZORIA, CA
19
BRISTOL, CA
2
BUFFALO, CA
3
BUTTE, CA
82
CALAVERAS, CA
155
CASS, CA
1
CHURCHILL, CA
91
CLARK, CA
119
CLEVELAND, CA
3
COCONINO, CA
2
COLUMBIA, CA
1
COLUSA, CA
77
COMANCHE, CA
4
CONTRA COSTA, CA
148
COOS, CA
21
CORYELL, CA
22
DAWSON, CA
6
EATON, CA
8
EL DORADO, CA
142
FREMONT, CA
13
FRESNO, CA
3,667
GENESEE, CA
5
GLENN, CA
28
GLOUCESTER, CA
21
HARRIS, CA
6
HARRISON, CA
49
HUMBOLDT, CA
37
IMPERIAL, CA
362
INYO, CA
368
JACKSON, CA
6
JASPER, CA
2
KENDALL, CA
1
KERN, CA
3,426
KINGS, CA
731
LA PAZ, CA
46
LAKE, CA
108
LASSEN, CA
43
LINN, CA
13
LOS ANGELES, CA
269
MADERA, CA
1,707
MADISON, CA
3
MARICOPA, CA
2
MARIN, CA
149
MARIPOSA, CA
184
MENDOCINO, CA
94
MERCED, CA
553
MIDLAND, CA
4
MOHAVE, CA
2
MONO, CA
120
MONTCALM, CA
8
MONTEREY, CA
2,702
NAPA, CA
178
NEVADA, CA
402
NYE, CA
9
OAKLAND, CA
8
OKLAHOMA, CA
3
ORANGE, CA
5
PARK, CA
24
PAYETTE, CA
2
PITKIN, CA
4
PLACER, CA
139
PLUMAS, CA
352
RANDALL, CA
24
RIVERSIDE, CA
493
ROGERS, CA
82
SACRAMENTO, CA
314
SAN BENITO, CA
245
SAN BERNARDINO, CA
843
SAN DIEGO, CA
547
SAN JOAQUIN, CA
1,615
SAN LUIS OBISPO, CA
128
SAN MATEO, CA
57
SANTA BARBARA, CA
110
SANTA CLARA, CA
69
SANTA CRUZ, CA
137
SENECA, CA
10
SHASTA, CA
204
SIERRA, CA
128
SILVER BOW, CA
3
SISKIYOU, CA
94
SOLANO, CA
127
SONOMA, CA
706
SPARTANBURG, CA
4
STANISLAUS, CA
1,506
SUTTER, CA
631
TANEY, CA
2
TEHAMA, CA
83
TRINITY, CA
65
TULARE, CA
6,061
TULSA, CA
4
TUOLUMNE, CA
64
VENTURA, CA
62
WABASH, CA
3
WASHITA, CA
5
WASHOE, CA
2
WEBSTER, CA
11
WHITLEY, CA
17
WILL, CA
3
YAVAPAI, CA
63
YOLO, CA
309
YORK, CA
2
YUBA, CA
61
YUMA, CA
56