All systems to fully replace all lead and galvanized requiring replacement service lines within 13 years of publication when a community water system has “access” to the service line. The final rule incorporates a cumulative average replacement rate compliance metric as well as the fixed deadline. The proposed rule’s explicit extended timeframe for systems with very large numbers of service lines requiring replacement was removed in the final rule.
All systems to determine materials of all service lines within 13 years of publication and validate non-lead service lines are accurately classified through visual inspection of a sample set of non-lead service lines at two points in each service line within 10 years of publication.
Addition of lead connectors to service line inventory beginning three years after publication. Connectors are to be removed when encountered.
Prohibits partial lead and galvanized requiring replacement service line replacement.
Communication with consumers and provision of filters is required when lead, galvanized requiring replacement, and lead status unknown service lines as well as connectors are replaced. The final rule expands the list of disturbances warranting customer education and provision of filters.
The lead trigger level was eliminated, lead action level was lowered to 10 µg/L, and associate monitoring tiers and sampling protocol revised. The tiers for sample site selection and the data used to make the action level compliance calculation were modified in the final rule.
Systems exceeding the lead action level multiple times to provide filters to any service area occupant upon request.
Notification of compliance monitoring site households of lead and copper monitoring results within 3 business days of receiving results.
Changes to compliance monitoring for lead will apply to all systems on the same schedule regardless of system size or current sampling schedule.
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