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Backflow & Cross-Connections

Program Contact Information

Michael Hebert  |  Cross Connection Control Manager
mhebert@portsmouthwater.org  |  401.683.2090 ext.228


Portsmouth Water & Fire District has partnered with an online platform, RPZ Flow, to simplify the backflow prevention process while ensuring the district stays compliant.

  • Water Customers: Creating an account is free. Once you register, you will be able to view and download your latest test results. They only send emails to remind you when testing is due or let you know when your test has been submitted. Register to check your compliance status and find testers in your area. rpzflow.com/customer_register
  • For any other questions, head to their How It Works or FAQ page to learn more.


What is a cross-connection?

BROCHURE DOWNLOAD (FULL RESOLUTION PDF)

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BROCHURE DOWNLOAD (FULL RESOLUTION PDF)

Do you have lawn irrigation? Head here.

Note A: All Customers require a Residential Dual Check Valve installed after the water meter. For customers with a lawn irrigation system, a Pressure Vacuum Breaker must be installed.

Note B: All lawn irrigation systems injecting chemicals, are pressurized, or where it does not meet the 12” minimum separation of elevation must install a Reduced Pressure Zone Backflow Assembly (RPZ).

Note C: Customers with a pool utilizing an Auto Chemical Feed and/or Auto Fill will require the installation of a Reduced Pressure Zone Backflow Assembly (RPZ) at point of use.

Note D: All Customers (New or Existing) that have a well located on the property for any purpose, even for lawn irrigation, shall require the installation of a Reduced Pressure Backflow Assembly (RPZ) and is to be installed immediately after the water meter.