Requires water supply system testing and compliance with secondary drinking water regulations.

This bill requires public community water systems in New Jersey to test water quality quarterly for compliance with secondary drinking water standards. Systems must sample at least 10% of customer taps (in addition to entry points) and report results to the state environmental department, local municipalities, and customers. If tests exceed standards, systems must create a compliance plan within 30 days to fix issues within 30 days, and submit a maintenance plan to ensure ongoing adherence. The law aims to improve transparency and consistency in water quality monitoring for residents served by public water systems.