When I was a student at Mizzou in the mid 80s, the university owned course (A. L. Gustin) had no irrigation system. The tees & greens were hand watered, and that is all. The course somewhat looked like how the fairways & rough look on TV from Carnoustie.
I loved it. First, it kept the rates low. Second, the tees and greens were in fine condition, but the rest of the course was hard, especially the summer I stayed on campus.
I believe in the 90s some of the regulars joined with the grounds crew and did finally put in an irrigation system.
I wish muni courses would adapt a "water conservation" approach, and do very little watering of fairways, and let sell it by keeping the rates lower from the money saved on lower water bills.
By the way if you are in Columbia, MO, I highly recommend a round at AL Gustin (just to the west of the football stadium). It is a fun course. I like it so much, that if I lived in Columbia, I would not be talking about it so as to keep it as my secret.