(A) Existing landscapes requirements. This section shall 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 water meter, the city shall 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 shall be calculated as:
MAWA = (0.8) (Eto)(LA)(0.62)
where:
MAWA = Maximum Applied Water Allowance (gallons per year)
ETo = Reference Evapotranspiration (inches per year)
0.62 = Conversion Factor (to gallons)
0.7 = ET Adjustment Factor (ETAF)
LA = Landscape Area including SLA (square feet)
0.3 = Additional Water Allowance for SLA
SLA = Special Landscape Area (square feet)
(2) For all landscapes that do not have a meter, the city shall 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.
(B) Landscape irrigation audits. All landscape irrigation audits shall be conducted by a certified landscape irrigation auditor.
(Ord. 1346, passed 5-2-12; Am. Ord. 1379, passed 11-4-15)