<p>In Kentucky, mains water is delivered by local public water systems, regulated by the Kentucky Dept for Environmental Protection, Division of Water, Drinking Water Branch under the US EPA Safe Drinking Water Act. Typical hardness: Hard to very hard; limestone karst and the Bluegrass carbonate region (Lexington / Louisville). For a specific ZIP, see the EWG Tap Water Database.</p>
Sources: Kentucky Dept for Environmental Protection, Division of Water, Drinking Water Branch, EWG Tap Water Database