Here's what rhymes with nonpotable.
potable notable quotable Words that almost rhyme with nonpotable
approachable erodible inapproachable unapproachable reproachable irreproachable knowable sociable unknowable negotiable controllable notional nonnegotiable unsociable consolable emotional devotional disposable uncontrollable inconsolable revokable promotional unemotional renegotiable overemotional