After looking at ROTAR's thread it got me wondering: I'd always considered backflow testing to be an integral part of irrigation installation and maintenance. I know there's a few on the forum that test, and I've heard reasons why others do not test (because no one told them to), but I'm curious how many members test. By the way, testing is very lucrative if you've got a purveyor that gives a rat's ass. Turn them into the State Health Dept. if they have no "program". It's a public health issue that seems to me to be our responsibility. What do you think and do you test?