Cumberland County, ME Fire Regulations: Propane Storage (2026)

Cumberland County does not regulate propane. Under 25 MRS § 2452, the Commissioner of Public Safety (acting through the Office of the State Fire Marshal) adopts fire-safety rules governing all buildings and structures, and the Fire Marshal has formally adopted NFPA 58 (2020 edition) — the Liquefied Petroleum Gas Code — as a state-adopted standard. NFPA 58 governs cylinder filling, container marking, location of containers relative to buildings and property lines (e.g., a 125 gallon water-capacity ASME container must be at least 10 ft from the nearest important building and 10 ft from line of adjoining property), valve protection, installation by qualified technicians, and emergency shut-off requirements. Residential LP-gas storage limits include a 200 lb (about 47 gal water capacity) aggregate limit for indoor or attached-structure storage of DOT cylinders, and a single 100-lb cylinder limit per room. Propane fueling and bulk storage facilities must be permitted by the State Fire Marshal's Office. Municipal fire departments in Portland, South Portland, Westbrook, Scarborough, and the rest of Cumberland County's 28 jurisdictions enforce NFPA 58 locally and may require fuel-gas piping permits via the Maine state plumbing inspector.