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San Jose annual backflow testing

San Jose Water says testing and recordkeeping are required on all backflow preventers at least once a year, and its backflow department administers the cross-connection control program.

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City: San Jose Utility: San Jose Water Cross-Connection Control and Backflow Program Cadence: At least annually Last verified: 2026-06-29
Local answer

What to check for San Jose

San Jose Water says testing and recordkeeping are required on all backflow preventers at least once a year, and its backflow department administers the cross-connection control program.

  • Due basis: San Jose Water says testing and recordkeeping are required on all backflow preventers at least once a year, and customers contacted by the Cross-Connection and Backflow Program are expected to act when a hazard survey identifies the need for protection.
  • Who is affected: Commercial and residential properties, fire services, irrigation systems, and other San Jose Water customers whose properties create actual or potential cross-connection hazards.
  • Program phone: 408-279-7872
Evidence-backed next step

Use the governing utility workflow

City search demand maps directly to San Jose Water's governing backflow program.

Open annual testing workflow
Local signals

Signals that matter before you act

  • Annual testing is explicit.
  • A dedicated team of licensed Cross Connection Specialists runs the program.
  • Customers contacted after a survey are expected to respond and bring the property into compliance.
Workflow

San Jose workflow order

  1. If San Jose Water contacts the property after a survey or review, confirm which device is required.
  2. Keep the annual test and recordkeeping current.
  3. Contact the backflow department if the assembly type or timing is unclear.