As an aid to the implementation of this article, the Department of Water and Power shall:
1. Distribute low-flow showerheads and water closet flush-reduction devices free of charge to all residential dwelling units for which building permits were issued prior to January 1, 1979; and
2. Monitor all water bills and notify those customers whose bills are determined by the Department to be significantly above average. These notifications shall commence within 90 days of the effective date of this ordinance. These notifications shall be accompanied by water conservation information, including instructions about water conservation audits conducted by the Department of Water and Power.