Backflow Prevention Devices & Services locations near Castro Valley, CA

Showing 1–4 of 4 results

Castro Valley, CA has 4 backflow prevention devices & services listings across 3 ZIP codes. Details on this page were last refreshed Aug 2026.

Updated Aug 2026

Bonetti Plumbing

Backflow Prevention Devices & Services

📍 20878 Rutledge Rd, Castro Valley, CA, 94546

📞 510-582-0934

🌐 bonettiplumbing.com

Barber Backflow Testing & Repair

Backflow Prevention Devices & Services

📍 90 Georgia Way, San Leandro, CA, 94577

📞 510-638-0154

Barber Backflow Testing & Repair

Backflow Prevention Devices & Services

📍 PO Box 920, San Leandro, CA, 94577

📞 510-632-9345

A & B Backflow Prevention Service

Backflow Prevention Devices & Services

📍 111 W Neal St, Pleasanton, CA, 94566

📞 925-828-8388

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Backflow Prevention Devices & Services
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