A new report comparing tap water from communities around the nation found South Carolina’s is safe to drink and better than the national average. PurityMap, an independent, data-driven advocacy website, analyzed several water systems serving 676,179 South Carolina residents that resulted in an average score of 82, a B, which is 4.1 points above the national average. The cities surveyed were Charleston, Columbia, North Charleston, Mount Pleasant, Rock Hill, Greenville and Spartanburg.