running washer/sump pump discharges into sanitary systems is a LARGE no-no in most communities,,, it must be discharged on TOP of ground,,, most waste-wtr treatment plants aren't design'd to handle addl waste wtr
in fairness to wtrproofers, they work to make a living,,, don't know of any that won't 1st suggest exterior work,,, usually just after hearing the $, they help prospect up off the floor then offer the 1st ' drop ' - the interior sub-floor perimeter ' french drain ',,, in the end, the customer always decides & signs contracts
hint - co's usually have a set $ for work - ext, int, whatever - its call'd ' par ' & is job's min $,,, the 1st price always incl ' bounce ',,, IF the buyer signs ' over par ', co's split ' overage ' ( addl $ over par ) w/' inspector ' ( salesman ),,, think cops carry guns to protect us ?, salesmen want bonus $ as do employers,,, roofer/siding men play the same as that's where the $ are,,, its a ' game ' - whoever blinks 1st loses
if no sale on the 1st call, the co calls again &, often, sends a different inspector who'll offer the work at a lower $ because ( fill in the blank ) but still over par,,, this is all call'd ' negotiation ',,, we had 1 salesman who ( 1 nite went w/him to learn ) got the customer to cancel their order w/another co, sold our sys @ more $, & even told customer he didn't know how it work'd but it did,,, i never EVER complain'd again when signing his bonus checks,,, he was GREAT !
'par' salesmen to not last w/companies