Water service to all customers, within and without the City, that are connected to the water system of the City shall be provided by the Des Moines Water Works, pursuant to the terms of a Chapter 28E Agreement between the City and the Des Moines Water Works. All such service shall be provided directly by Des Moines Water Works as the water service provider to customer and shall be pursuant to the rates, fees, rules, and regulations established by the Des Moines Water Works from time to time.