Miss. Code Ann. § 21-27-27: Miss. Code Ann. § 21-27-27

No free service shall be furnished by any such system, or combined system, to any private person, firm, corporation, or association. The municipality may, however, furnish such service, free of charge, to the municipality or any agency or department thereof, to any public school, or to any hospital or benevolent institution located within such municipality, including county, city, and community fairs.