Customers planning to make any material change in the size, character, or extent of the equipment or operations utilizing water service, or whose change in operations may result in a greater than 500 percent increase in the average usage of water, shall contact the city prior to implementing any changes, and, if necessary, amend their applications. [Ord. 910 Art. 4, § 6, 2016; Ord. 878 Art. 4, § 6, 2015.]