A bill to amend the Safe Drinking Water Act to modify eligibility for the State response to contaminants program, and for other purposes.

This bill (S 3778) updates eligibility rules for state grants under the Safe Drinking Water Act's State Response to Contaminants program. It directly affects states, communities (especially those with populations under 10,000), and owners of private drinking water wells not connected to public systems. Key changes include adding new criteria: states may now grant funds to communities deemed "disadvantaged" under state affordability rules, or to small communities lacking debt capacity for cleanup, and to private well owners outside public water systems. These modifications clarify who qualifies for federal assistance to address drinking water contaminants.