 Links to San Diego County Water Districts
San Diego County Water Authority
Metropolitan Water District
San Diego County Department of Health Services
ABPA (American Backflow Prevention Association)
ABPA (Southern California Chapter)
AWWA (American Water Works Association) (California/Nevada)
AWWA American Water Works Association (National)
EPA Environmental Protection Agency)
DWR (California Department of Water Resources)
Drinking Water and Backflow Prevention Online
USC Foundation for Cross Connection Control "&" Hydraulic Research
Manufacturers and suppliers
State Health Recycled Regulations
American Society of Sanitary Engineers
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