Cured in Place Pipe Philadelphia. Cured in Place Pipe lining is the alternative to digging and replacing your Philadelphia sewer and drain pipes. Cured in place pipe lining is a trenchless technology used widely in Philadelphia and the entire Northeast. Within hours, the sewer or storm pipe will be rehabilitated as if nothing had ever taken place. The cured in place pipe lining technology cuts down on excavation and restoration materials, while being environmentally safe!