Permit Requirements

NEW! Backflow Permit Submittal Checklist Handout 2025

Backflow prevention assemblies that require replacement or are newly installed  must be permitted through the City’s Building Safety and/or Fire Prevention Departments. 

It is the responsibility of permit applicants to have an up-to-date Hazard Assessment if any of the following criteria exist: 

  1. if a user premises changes account holder, excluding single-family residences; 
  2. if a user premises is newly or re-connected to the City water system; 
  3. if evidence exists of changes in the activities or materials on a user’s premises; 
  4. if backflow from a user’s premises occurs; 
  5. periodically, as identified in the City’s Cross-Connection Control Plan required pursuant to CCCPH section 3.1.4.; 20 
  6. if the State Water Board requests a hazard assessment of a user’s premises; and 
  7. if the City concludes an existing hazard assessment may no longer accurately represent the degree of hazard.

Unpermitted work will result in assemblies being non-compliant. 

Non-compliant devices are subject to termination of the water service. 

Quick Links

Building Safety | Milpitas, CA

Fire Prevention | Milpitas, CA

City of Milpitas | Online Permitting System

Initial Testing of Replaced/Newly Installed BPA’s (Certification) 

Replaced and newly installed backflow prevention assemblies must be tested immediately prior to restoring service to the customers premises. 

The form linked below must be fully completed, signed and sent to the Cross Connection Specialist at rmoreno@milpitas.gov for each replaced and/newly installed assembly. 

Replaced and new devices without passing tests are subject to termination of the water service. 

BPA Field Testing/Maintenance/Replacement/New Installation FORM (Fillable)