We work at a this HOA that has a system that irrigates the sides of the road. Over the past six months the pressure on 4 of the zones has gone from acceptable to piss poor. We dug out one pipe today that was almost completely choked off. I am at a loss on what to propose because of how fast this is happening and these Linden trees line the whole road so this is going to keep happening. The roots on these trees are super dense and go from the edge of the road to the privet hedge so there is no easy way around them. Any ideas?