City of Dearborn Water and Sewerage Division 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.
Official inventory page: https://experience.arcgis.com/experience/f40b94e58e4a47fcbb89b3e69c64ec6d
Official lookup: https://experience.arcgis.com/experience/f40b94e58e4a47fcbb89b3e69c64ec6d
Use the source stack that supports this interim route.
Dearborn provides a lead service line information map for residents and routes households to the city's service line survey and information resources.
https://experience.arcgis.com/experience/f40b94e58e4a47fcbb89b3e69c64ec6d
Dearborn says 100 homes are tested annually, results remain within federal action levels, and residents should complete the city's survey while the city works through Michigan's lead service line replacement mandate.