A zone will not shut off
- What it usually is
- Almost always a valve held open by grit under its diaphragm, or a valve that has worn out. Less often, a controller stuck on.
- Check this first
- Turn the controller off. If water still runs, close the irrigation shutoff (usually in the basement where the line leaves the house). That stops the water bill while you wait.
- What we do
- We find the valve, clean or rebuild it, or replace it, then run the zone to prove it shuts off.










