<p>In Rhode Island, mains water is delivered by local public water systems, regulated by the Rhode Island Dept of Health (RIDOH), Center for Drinking Water Quality under the US EPA Safe Drinking Water Act. Typical hardness: Soft to moderately hard; Providence Water is soft. For a specific ZIP, see the EWG Tap Water Database.</p>
Sources: Rhode Island Dept of Health (RIDOH), Center for Drinking Water Quality, EWG Tap Water Database