Gritz Pools & Spas has been installing swimming pools, offering pool services and handling spas and hot tubs in Chester County, Berks County, Reading and Lancaster PA since 1963. With a full line of pool and spa chemicals and accessories, Gritz Pools & Spas has what you need. Need someone to open or close your pool? In need of a pool liner replacement? Discover why vinyl pool liners from Gritz Pools are the preferred choice for thousands of swimming pool owners.