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Water Saving Calculators/Website Links

WaterSmart San Diego County
A one-stop shop designed to inspire and empower residential and commercial water users to make WaterSmart choices. The site features tips, a photo gallery of water-smart landscaping projects, answers to frequently asked questions, details about financial incentives for water-saving upgrades and much more.

See how your estimated water usage compares to average and water-wise households. Your carbon footprint is calculated too!

An interactive guide designed by local landscape and irrigation experts exclusively for San Diego residential landscapes. Includes design advice, plant information, and maintenance tips for when your California-friendly landscape is installed. 

Understand where your water comes from, its value, and why shortages seem to be more common lately. Also included are some great tips for conservation to help you save water inside and outside your home.  Visit 
New National Geographic's Water for Tomorrow

Get instant access to the region’s latest water news on your smart phone - including news releases
and top issues, video, and multimedia features from the San Diego County Water Authority.
Connect with the Water Authority By Downloading Their Free “Water News” Smartphone App 


H2OUSE Water Use Calculator 

How much water are you using at your home? A water budget tells you the right amount of water you should be using. Compare the water budget to your actual water bill and see how much water you could be saving.

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H2OUSE : The Home Tour – Virtual Water Saver House 

Take the tour to investigate your water saving opportunities in each area of your home. Click on each location to show you both the facts and specific advice.

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The Watering Calculator 

The Watering Calculator is intended to be used with zip codes for urban Southern California. It was developed by the city of San Diego. It is a tool that estimates the right amount of water to give your landscape or garden every week.

It has been designed to give you a schedule for the maximum amount of water which your plants may need each week of the year. For example, in January, your plants may need to be watered for a total of six minutes per week. Come July, they may need 24 minutes per week. The calculator has been simplified by using average numbers for weather, plants, and soils within the urban Southern California area, and should be used as a guide only.


Nice Save Logo

California Water Awareness Campaign 

The California Water Awareness Campaign is a year-long effort by organizations throughout California to heighten public awareness of water conservation, water management, water supply, water quality and distribution. Each year under the campaign's umbrella, observance of Water Awareness Month is held in May. 

Water Awareness Logo  Nice Save Logo


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EPA: Protect Your Drinking Water for Life 

This web site contains general conservation information. Offers tips on how to protect your drinking water: Be Informed, Be Observant, Be Involved and Don't Contaminate!

Ways to Save Water Outdoors:

  • Water only in late evening or early morning hours to reduce evaporation and interference from wind.
  • Don’t overwater. Reduce each irrigation cycle by 1-3 minutes, or eliminate one irrigation cycle per week.
  • Use a hose equipped with a shut-off nozzle or a bucket to water landscaped area not irrigated by a landscape irrigation system.
  • Water only after the top inch of soil is dry.
  • Reset irrigation controllers and replace batteries in the spring and fall.
  • Adjust sprinklers to prevent overspray and run-off.
  • Repair leaks and broken sprinkler heads.
  • Add 2” to 3” of mulch around trees and plants to reduce evaporation.
  • Install water-efficient drip irrigation system for trees, shrubs, and flowers to get water to the plant’s roots more efficiently.
  • Upgrade to a “Smart irrigation controller” that automatically adjusts water times for hotter weather, and shuts down the system when it rains.
  • Replace a portion of lawn with low-water-use plants.

Other Outdoor Ideas

  • Use a broom instead of a hose to wash down patios and driveways.
  • Wash vehicles at a commercial car wash or use a bucket or hose with a shut-off nozzle. Avoid washing during hot conditions when increased evaporation requires more water.
  • Repair all water leaks.
  • Install covers on pools and spa to reduce evaporation.
  • Use re-circulated water to operate ornamental fountains.

Ways to Save Water Indoors:

  • Run the dishwater only when full.
  • Turn off water when brushing teeth.
  • Shorten showers and save 2.5 gallons per minute.
  • Fill the bathtub half full while bathing.
  • Don’t use the toilet as a wastebasket.
  • Wash only full loads of clothes.
  • Fix leaky toilets and faucets around the house.
  • Install aerators with flow restrictors on kitchen/bathroom faucets.
  • Replace older, inefficient clothes washers.
  • Replace older, high–volume flushing toilets.