What is an alternative source of water for irrigation that is not potable?

Rainwater is considered an alternative source of water for irrigation that is not potable because it is harvested from precipitation rather than treated for human consumption. Utilizing rainwater for irrigation is an effective way to conserve potable water, reduce reliance on municipal water supplies, and manage stormwater runoff.

In many climates, capturing and using rainwater for irrigation helps maintain landscape health while protecting local water resources. Rainwater collection can be achieved through systems like rain barrels or cisterns, designed to store water for later use in watering gardens, lawns, or agricultural crops.

This method aligns with sustainable practices in water efficiency as it promotes the use of natural resources, reduces overall water demand, and lowers water bills for property owners. It is often encouraged in LEED certification criteria, particularly in the Water Efficiency category, as it supports responsible water management.