<p>In Florida, mains water is delivered by local public water systems, regulated by the Florida Dept of Environmental Protection (DEP), Source & Drinking Water Program under the US EPA Safe Drinking Water Act. Typical hardness: Very hard; Floridan limestone / karst aquifer, averaging roughly 200+ ppm (among the hardest in the US). For a specific ZIP, see the EWG Tap Water Database.</p>
Sources: Florida Dept of Environmental Protection (DEP), Source & Drinking Water Program, EWG Tap Water Database