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The City of San Diego Landscape Watering Calculator is an easy-to-use tool that helps you estimate the right
amount of water to give your landscape or garden.
The calculator has been designed to give you a weekly schedule for the maximum amount of water which your plants may need each month of the year. Because everyone's landscape is different, the calculator has been simplified by using average numbers for weather, plants, and soils in San Diego. IMPORTANT: The Landscape Watering Calculator does not reflect local voluntary and mandatory conservation measures that may be in effect. Please read the Level 1 Drought Watch and Permanent Water Use Restrictions page (or check with your own water supplier if you live outside of the City) to learn your restrictions. For example, current outdoor watering restrictions in the City of San Diego are as follows: 1. Voluntarily irrigate no more than three (3) assigned days per week. The assigned days are:
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