A district may adopt and enforce reasonable rules to:
(1) secure and maintain safe, sanitary, and adequate plumbing installations, connections, and appurtenances as subsidiary parts of its sanitary sewer system;
(2) preserve the purity and the sanitary condition of all water controlled by the district;
(3) prevent waste or the unauthorized use of water controlled by the district;
(4) regulate privileges on any land or easement owned or controlled by the district;
(5) provide and regulate a safe and adequate freshwater distribution system; and
(6) ensure adequate safeguards in the performance of the district's fire-fighting activities.