A. Existing Landscapes: A local agency may by mutual agreement, designate another agency such as a water purveyor, to implement some or all of the requirements contained in this chapter. Local agencies may collaborate with water purveyors to define each entity's specific responsibilities relating to this chapter.
B. Irrigation Audit, Irrigation Survey, And Irrigation Water Use Analysis: This section will apply to all existing landscapes that were installed before December 1, 2015, and are over one acre in size:
1. For all landscapes that have a dedicated water meter for the irrigation system, the local agency is required to administer programs that may include, but not be limited to, irrigation water use analyses, irrigation surveys, and irrigation audits to evaluate water use and provide recommendations as necessary to reduce landscape water use to a level that does not exceed the maximum applied water allowance for existing landscapes. The maximum applied water allowance for existing landscapes must be calculated as: MAWA = (0.8) (ETo)(LA)(0.62).
2. For all landscapes that do not have a dedicated meter for the irrigation system, the local agency must administer programs that may include, but not be limited to, irrigation surveys and irrigation audits to evaluate water use and provide recommendations as necessary in order to prevent water waste.
3. All landscape audits must be conducted by a certified landscape irrigation auditor and must describe the items in subsection 15-15A-14D1 of this chapter.
C. Water Waste Prevention: Local agencies must prevent water waste resulting from inefficient landscape irrigation by prohibiting runoff from leaving the target landscape due to low head drainage, overspray, or other similar conditions where water flows onto adjacent property, nonirrigated areas, walks, roadways, parking lots, or structures. Penalties for violation of these prohibitions will be established locally.
Restrictions regarding overspray and runoff may be modified if:
1. The landscape area is adjacent to permeable surfacing and no runoff occurs; or
2. The adjacent nonpermeable surfaces are designed and constructed to drain entirely to landscaping. (Ord. 1515, 12-15-2015)