Guidelines for Alternate Water Sources

Indoor and Outdoor Non-Potable Uses

In moving toward a safe and sustainable water future for Los Angeles, we must learn to conserve water, replenish groundwater, and safely reuse water so that there is net zero water waste. There are many ways to approach this goal. If Los Angeles is to be successful in building a sustainable water future, Angelenos must learn to reduce the use of potable water (i.e. drinking water) for purposes such as flushing toilets, landscape irrigation and washing clothes.

One method to reduce the use of potable water for these tasks is to promote the safe use of alternate, non-potable water sources such as rainwater, graywater and stormwater. These alternate water sources can be used safely for a variety of indoor and outdoor uses, as long as public health requirements are met.

To assist the public with information on how to collect and safely use alternate water sources, the Guidelines for Alternate Water Sources: Indoor and Outdoor Non-Potable Sources were prepared to provide a user-friendly road map for alternate water use.

The following agencies were instrumental in developing these guidelines:

City of Los Angeles Sanitation
City of Santa Monica Office of Sustainability & the Environment
Heal the Bay
Los Angeles County Department of Public Health
Natural Resources Defence Council
State Water Board Drinking Water Division