Scott Hildenbrand wrote:

Find the swamp in the yard caused by the thousands of gallons of water
your system seems to be wasting.

Haven't noticed any swamps or really wet areas around the sprinkler
heads

Beyond that, capping all the heads and running the whole system to
locate wet spots in the yard is about the only thing you can do.
That was my thought too.
But eesh, with that much water you'd think the problem area would be
soaked enough to sink into when walked on.

I agree, I also plan on getting rid of this St. Augustine grass &
replace with Bahia.
Dave FL