A boil water advisory that affected some Tega Cay residents and businesses after a water main break has been lifted. Utility crews on Tuesday were able to isolate a water main break at S.C. 160 and Stonecrest Boulevard, and restore service by about 10 p.m. “The customers affected the most by this break were businesses in Stonecrest and in Graystone,” said Charlie Funderburk, city manager. However, residents were asked Wednesday morning to conserve as much water as possible. A boil water advisory was in effect for any customers who lost service. In instances like the one in Tega Cay, the state…