The purpose of this legislation, known as the "Financing Lead Out of Water Act of 2025," is to make it easier for public water systems to replace lead service lines. Lead service lines are pipes that can carry lead into drinking water, posing health risks. This law aims to modify existing tax rules to encourage the use of bonds for funding these replacement projects. One of the key provisions of this law is the clarification that the use of funds from certain bonds for lead service line replacement will not be considered private business use.