Some documents that show the

[UCGal]

Some documents that show the percent of water use for typical residential irrigation.

http://www.cbia.org/go/cbia/?LinkServID=E242764F-88F9-4438-9992948EF86E49EA

http://www.calwater.ca.gov/Admin_Record/D-046947.pdf

57% or 61%, depending on which source.

Showers are 17%.

So even if you take longer/wetter showers than average – irrigation is still going to have the biggest impact on your bill.