City of Chandler Water Utilities filter and testing guidance
Use this only as an interim protection layer when replacement is not immediate and the utility-specific next step is still unresolved.
Filters and testing are interim safety layers. They are not equivalent to a utility-confirmed full replacement path.
Use this only when replacement is not immediate: filter guidance sits below inventory, notice, and replacement decisions. It is not a substitute for line replacement.
Use local utility guidance, then narrow to certified interim protection.
Maintenance tips
Use a certified filter as an interim protection step, not as a replacement for line replacement.
Use testing when it changes the next action or clarifies uncertainty.
Return to the utility lookup if the service-line status is still unclear.
Testing should change the next action, not distract from the utility record.
Use the source stack that supports this interim route.
Chandler says it has not identified a lead service line, approximately 27604 service lines required verification, and a little over 24000 have already been confirmed as non-lead.
Chandler says unknown-status notices were sent in fall 2024 and fall 2025, field verifications continue through summer 2026, and residents receive a door hanger once material confirmation is complete.