<p>In South Carolina, mains water is delivered by local public water systems, regulated by the SC Dept of Environmental Services (SCDES), Bureau of Water under the US EPA Safe Drinking Water Act. Typical hardness: Generally soft to moderately soft; crystalline Piedmont bedrock and coastal surface water. For a specific ZIP, see the EWG Tap Water Database.</p>
Sources: SC Dept of Environmental Services (SCDES), Bureau of Water, EWG Tap Water Database