I am in the process of doing this. We are close to done with a pool build so had to relocate a head form back yard to front yard. For us, the process was way more complicated than I would have ever thought. We had to meet with the septic designer multiple times and then had to have the county come out to give approval.
Now, if you have plenty of land the process may be much easier.
Here's a brief idea of our issue:
live on .75 acre.
have three heads, each are drawn to rotate 180 degrees at 32 feet each.
we had to relocated one head that was in the back yard to the front yard where the other two were
we have a dry creek running through the front yard. All available area on one side of creek was used by the two existing heads. so we needed to use space on the other side of creek.
problem is, these heads had to make up the same square footage as the lost head and:
-be 10 ft from all property lines
- be 10 ft from dry creek
-be 10 ft from a tree
-spray only on turf
-not spray over a retaining wall
-not spray over underground main water line or meter
-not spray on turf over a certain grade
for us it came down to 27 square feet! to spare after the count agent decided exactly where the banks of the dry creek were