The "Safe Drinking Water for Disadvantaged Communities Act" aims to ensure that federal funding for lead service line replacement directly benefits vulnerable populations. It specifically addresses funds made available under the Infrastructure Investment and Jobs Act for projects related to replacing lead service lines and associated activities, including identification, planning, and design. Under this bill, all such funds for capitalization grants for the Drinking Water State Revolving Funds must be disbursed exclusively as forgivable loans or grants . These financial instruments are intended for disadvantaged communities , as defined by the Safe Drinking Water Act, to facilitate critical infrastructure improvements without imposing undue financial burden on these areas.