I'm trying to figure out the best way (and materials) to carry the sump pump discharge water away so it no longer creates a cesspool beside my garage.
When we moved in 6+ years ago there were old broken down downspouts being used to carry the discharge water up the side of my garage and onto the driveway where it runs off. The connected downspouts leaked at the seams and were too clogged so nothing came out.
When I tore them out I wanted to originally tie in the sump pump discharge, the garage downspout and install a drain in the yard to catch water at the low point and use an underground pipe to carry the water to the front yard where it grades down. I'm not sure there is a good place to discharge with an underground pipe(and it would have to run very close to the neighbor's property where they have a mature tree) so that plan has been shelved for the time being but would have been the optimal solution from the effectiveness standpoint.
Back to the original question, what materials should I use? 2.5 in PVC with glued couplings? I found 2" flexible PVC, would that be a better option? Is there any way to fasten the pipe so it grades slowly from the back of the house to the front? Is there a way to fasten the pipe without drilling into my foundation? I was looking at various hangers and wasn't sure if they could be used upside down in the dirt to hold the pipe at a grade without having to drill into the foundation.
I have a few pictures attached.