Amends the deadlines for the upgrade or conversion of cesspools to Director of Health-approved wastewater system or connection of cesspools to a sewerage system. Requires priority 1 cesspools to be upgraded, converted, or connected by 12/31/2050, and phases the deadlines for lower priority cesspools in later years. Requires the Director of Health, in consultation with the counties, to determine the prioritization level of all cesspools in the State.