<p>In West Virginia, mains water is delivered by local public water systems, regulated by the WV Bureau for Public Health, Office of Environmental Health Services (OEHS) under the US EPA Safe Drinking Water Act. Typical hardness: Moderately hard to hard; hardest in limestone regions (wells up to ~250 mg/l). For a specific ZIP, see the EWG Tap Water Database.</p>
Sources: WV Bureau for Public Health, Office of Environmental Health Services (OEHS), EWG Tap Water Database