This guide covers residential utility service law for legal aid advocates, consumer lawyers, housing practitioners, and utility compliance staff. Part 1 explains the regulated-monopoly structure, the tariff, and the residential service rules that govern the customer relationship. Part 2 sets out the constitutional framework after Memphis Light and Jackson. Part 3 details the disconnection process, its notice requirements, and its prohibited grounds. Part 4 catalogs the protections: payment arrangements, medical certificates, moratoria, protected categories, and the complaint freeze. Part 5 covers the assistance programs and their statutory bases. Part 6 addresses billing disputes, estimated readings, back-billing, deposits, and meter testing. Part 7 covers landlord-tenant and master-meter problems. Parts 8 through 13 address bankruptcy, complaint forums, wrongful disconnection remedies, restructured markets, special populations, and practice guidance.