Advanced Search Utilities Long Island American Water emergency (877) 426-6909; non-emergency (877) 426-6999 More Info National Grid (Gas) – Nassau County emergency 1-800-490-0045; non-emergency/customer service 1-800-930-5003 More Info National Grid (Gas) – Metro NY including Queens 718-643-4050 More Info PSEG Long Island (Electric) emergency 1-800-490-0075; non-emergency 1-800-490-0025 More Info
