Irrigation

Our water consumption is at its highest during the summer months due to outdoor watering. That’s one reason why irrigation — whether it’s a single sprinkler attached to a hose or a sophisticated underground system — is a key component to your water conservation efforts.

The first point to remember is that the greatest waste of water is watering too much, too often. Follow the guidelines below to help determine your landscape’s watering needs.

How Much

The amount you water should be based on soil conditions and plant needs. Watering thoroughly, but infrequently, will help roots go deeper, resulting in more water–efficient, drought–tolerant plants. If water puddles or runs off your lawn when you water, split your total weekly watering time in half.

How Often

An established lawn should be watered separately from other plant areas, and needs about 1 inch of water each week — more during our infrequent hot and dry spells. Mature trees, shrub beds and perennials typically need even less water.

What Time?

Make sure you water before 10 a.m. or after 6 p.m. when the air is calm and cooler, and evaporation is kept to a minimum.

Learn more water–saving practices by visiting the other irrigation–related pages in this section and downloading our 7 Basic Steps for Creating Water Efficient Landscapes (PDF) brochure.