About the Ordinance:

The State of California recently passed Assembly Bill 1881 with regard to water efficient landscape requirements. The Bill requires that all Cities adopt an ordinance that complies with the water efficient landscape requirements by January 1, 2010. The Bill affects both new and altered residential and commercial landscape areas, but existing landscape areas do not need to comply.

The new ordinance outlines a formula to create a water “budget” for new or altered landscape areas over 1,500 square feet. Based upon the size of the landscape area and the evapotranspiration (ET) rate of the City (currently 39.7) a maximum applied water allowance is established. Once the “allowance” is determined the landscape area must then be designed to use at, or less, water than the allowance. The ordinance also limits the amount of turf within a landscaped area and requires commercial projects to use all water wise plants as designated by the State. Furthermore, there are irrigation standards included in the ordinance such as no over-spray onto impervious surfaces, and to use drip irrigation when possible.  

Read the Landscape Ordinance online.

Printable version of the Ordinance:

Water Efficient Landscaping Ordinance.pdf Water Efficient Landscaping Ordinance.pdf
Size : 0.042 Kb
Type : pdf


Water Budget Calculation - examples and worksheets 

Example Calculations.pdf Example Calculations.pdf
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Calculation worksheet.pdf Calculation worksheet.pdf
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Example Landscape Plans - get ideas and learn how to set up hydrozones within your own garden. 

Hydrozones and Layouts.pdf Hydrozones and Layouts.pdf
Size : 1.095 Kb
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Soil Testing Companies 

Soil Testing.pdf Soil Testing.pdf
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Plant List - contains the water use level for plants commonly used in landscaping. 

Plant List.pdf Plant List.pdf
Size : 0.203 Kb
Type : pdf