<p>In Virginia, mains water is delivered by local public water systems, regulated by the Virginia Dept of Health (VDH), Office of Drinking Water under the US EPA Safe Drinking Water Act. Typical hardness: Variable; soft in Blue Ridge / Piedmont crystalline rock, hard in the Shenandoah / Valley limestone belt. For a specific ZIP, see the EWG Tap Water Database.</p>
Sources: Virginia Dept of Health (VDH), Office of Drinking Water, EWG Tap Water Database