Originally Posted by Wet_Boots
Of course the well water can be filtered. All well water should be filtered. Sprinklers are usually assumed to be using clean city water, and you must use 80 or 100 mesh strainers in the supply, in order for the solenoid valves to operate properly, before you even worry what the sprinkler heads require.
Depending on the quality of the well water, filters may be needed. That being said, who is going to be responsible for checking and cleaning the filters? RB did make a pretty cool scrubber/filter that was self-flushing, I used them to great success. I'd still have a pump-down test done before looking like a dipwad when it still failed to perform after convincing the client that was all they needed.