consumption per household
Does anybody have some number on the average water
consumption per household for landscape irrigation in California? On the average size and
cost of the domestic irrigation installation?
by Manrique Brenes
For information on residential landscape water use, please
refer to the discussion of seasonal water use in the California Department of Water
Resources' Bulletin 166-4, Urban Water Use in California. It's accessible from our web
You can order a hard copy by calling our publications desk at
by J. Scott Matyac
It takes about 5.0 acre feet of water per acre per year for
residences and their landscapes in Southern California and Arizona.
by Aron Quist
Aron, That may be true in some areas. In our area, the figure
is under 2 AF/yr. Reasons: colder coastal climate with few swimming pools, and smaller
landscape grounds with a recent drought.
Does the figure include industrial / commercial use?
by Steve Jordan
In West Texas we found that the cost of off-the-shelf
materials alone for residential sprinkler systems was about $0.07-0.10/sq ft. It can go
lower if spray heads can be replaced with impacts or rotors. Labor requirements were about
1.0 man-minute/sq ft. The actual charge to homeowners for turn-key installations was
$0.40-0.50/sq ft. Many installers used a multiplier times the number of sprinkler heads in
the system to obtain the price they charge. The turnkeyl charges are probably lower than
most parts of the country, and reflect the fact that many unemployed oil filed workers
were involved in the sprinkler business at the time of the study, and a buyer's marker
Water use by automatic systems were 31.0" (n=20),
51.2" (n=10), and 34.1" (n=3) for Ft. Worth, Ft. Stockton and Andrews, TX,
respectively. This represents 129%, 169%, and 106% of Eto for the same cities
respectively. Unfortunately, total use by the automatic systems was 77% higher than
hose-move systems in the study (n=81).
Lawns in Andrews were rated on appearance (n=47) and compared
to application amounts. Generally, 30" of water was enough to have a good quality of
turf. Andrews & Ft. Stockton are similar in climate to Fresno, CA.
by Joe Henggeler