During the period of approximately April 15th through October 15th, water used by residential customers for sprinkling and irrigation purposes, as provided by Section 13.04.480, will not be billed a sewer charge. Commercial customers with greenspace will not be billed a sewer charge if they make application with the water and sewer superintendent and satisfactorily demonstrate that the water they use in excess of their average for the months of December, January and February is used exclusively for sprinkling and irrigation purposes. If such application is not approved, the customer will be billed for all sewer charges. Winter averages for those customers not served by the utility during the months of December, January, and February will be set per household size as listed in the rate resolution. Multifamily winter averages will be maintained from the prior winter, in case of new owner(s), unless a change of use occurs. (Ord. 611 § 11, 1998: Ord. 585 § 11, 1995)