Spoke to customer upon arrival. Expressed concern about green residue on pipe. Found green residue was from flux. The flux was not wiped the way when house was originally built. Cut out the biggest spot of green residue and replaced with 2 90s and couplings. Tested to find no leak at this time. Found sump pump not working bypass float switch sump pump would still not turn on. Replaced sump pump with sump pump with alarm. Tested unit is working perfectly at this time. Customer paid with check