Question
Hello. We had a new well dug and ran the water for about a year but it never ran clear all the time, so we figured we'd just be using it for irrigation purposes. We had an irrigation system installed and wound up replacing all 24 rotor heads with the Rain bird Maxi-Paw impact sprinkler since they were designed to be used with dirty water. It did okay until recently. Now one zone has continued to run when the controller is turned off. We have had such a hard time with this system running off a well. Any suggestions?

Answer
I would guess that your control valve for that station is stuck open, probably from the debris accumulated with dirty water.  Turn off the water, locate the valve, remove the screws that hold on the valve top, and carefully dissemble the internal components, clean them thoroughly, inspect the rubber diaphragm for holes or tears (replace if needed) and then reassemble.