<p>In New Hampshire, mains water is delivered by local public water systems, regulated by the NH Dept of Environmental Services (NHDES), Drinking Water & Groundwater Bureau under the US EPA Safe Drinking Water Act. Typical hardness: Soft to moderately hard (bedrock aquifer). For a specific ZIP, see the EWG Tap Water Database.</p>
Sources: NH Dept of Environmental Services (NHDES), Drinking Water & Groundwater Bureau, EWG Tap Water Database