City of Hamilton Utilities + Public Works Water 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://www.hamilton-oh.gov/lead-awareness
Official lookup: https://www.hamilton-oh.gov/lead-awareness
Use the source stack that supports this interim route.
Hamilton says its interactive lead service line map provides the best available data for both customer-owned and utility-owned portions of the service line.
Hamilton explains flush and filter guidance, says private-side replacement cost remains the owner's responsibility, and says the city replaces known city-owned lead service lines during water main projects.