Gaithersburg, MD Swimming Pools & Spas: Safety Rules (2026)

Gaithersburg adopts the International Residential Code as amended by Montgomery County, which establishes comprehensive swimming pool safety standards. All residential swimming pools, including in-ground and above-ground models with a water depth exceeding 24 inches, must be enclosed by a barrier at least 48 inches high meeting the specifications of IRC Section R326. Barrier openings must not allow passage of a 4-inch sphere. Gates must be self-closing and self-latching with the latch release at least 54 inches from grade or otherwise inaccessible to small children. Pool covers used as safety barriers must comply with ASTM F1346. Drain covers must comply with the Virginia Graeme Baker Pool and Spa Safety Act (VGBA) to prevent entrapment. Montgomery County Code Chapter 5, Article I regulates public and semipublic pools and requires lifesaving equipment, depth markers, and proper chemical treatment. Residential pool owners should maintain a reaching pole and ring buoy or U.S. Coast Guard-approved life preserver near the pool. Contact Gaithersburg Building Inspection at (301) 258-6330 for permit and inspection requirements.