The design and construction of the utility's water plant shall conform to good standard engineering practice, including the minimum standards of the American Water Works Association. It shall be designed to make reasonable provision for the company's water supply requirements for a period of at least fifteen years and operated so as to provide reasonably adequate and safe service to its customers and shall conform to the requirements of the state department of health with reference to sanitation and potability of water.
Conn. Agencies Regs. § 16-11-79