Purity Nails and Spa - Nail salon | Manicure | Pedicure in Chatham Station Shopping Center Ellicott City, MD 21042. Located in the heart of Ellicott City, MD 21042, Purity Nails and Spa has become an industry leader in nail services. Our nail salon was founded on the idea of delivering only the finest nail and spa services to clients all over the Ellicott