This bill mandates that the owner or operator of a public water system must reimburse residential customers for the costs associated with drinking water testing under specific circumstances. When a public water system exceeds a maximum contaminant level or action level as defined by federal or State drinking water standards, the reimbursement is triggered at the request of the municipality where the customer resides. The testing must be conducted by a laboratory certified by the Department of Environmental Protection, and importantly, the costs incurred for this testing cannot be passed on to the regulated rate customers of the public water system.

Additionally, the bill requires the Department of Environmental Protection to establish rules and regulations to implement these provisions, ensuring a structured approach to the reimbursement process. The act is set to take effect immediately upon passage, emphasizing the urgency of addressing water quality concerns for residential customers.