Hello all,

Is it better to set the drain of a whole-house water filter (which
does its backwash every 3 days or so) to empty into a sump, or to
bypass it? What I'm asking is whether its good to keep a sump pump
exercised - otherwise it might not be used more than a few times a
year and could just dry up and stop working when its needed.

The sump pump has a diaphragm pressure switch, rather than a float, if
that makes a difference.

Many thanks!

Dean