City of Chandler Water Quality: backflow testing rules

Who must test

• All backflow prevention devices on city potable water service lines that serve as secondary containment must be tested annually; devices on reclaimed water services are exempt. Source.

Notices and deadlines

• Chandler sends email notices before assembly due dates; owners must keep contact information current with Water Quality. Source.
• First notice letters go out 60 days before the certified test is due, with a 60 day response period. Source.
• If no passing report arrives within 30 days of the first notice, a reminder is sent (30 day response); if none arrives at least 5 days before the due date, a final reminder is issued (5 day response). Source.

Tester registration

• Chandler Water Quality lists backflow testing companies it has verified as holding an active Arizona Registrar of Contractors licence and insurance coverage. Source.

Approved testers

• Chandler publishes its verified backflow testing companies as an HTML table, not a PDF. names not extracted). Source.

If a test is missed

• If passing test reports are not received by the compliance date, water service is shut off on the following working day. Source.
• Water stays off until a passing certified backflow test is received or completed under the supervision of a city Water Quality representative. Source.

Read October 6, 2026. Program page: chandleraz.gov.

Certified backflow testers near Chandler

All certified testers near Chandler · Arizona roster