I would suggest you re-pour your brewery floor so you have a 1-2% fall towards your drains. That way, whatever spills on the ground can be hosed to the drain and make your life much easier. I am going through this right now, and yeah it'll be expensive, but it'll be worth it. Side note: Can your existing concrete floor handle the load of your brewing equipment? It might be good, given your tendencies for big earthquakes these days, to redo the slab anyways.
Side note, I just poured my brewery floor last week, remaining floor this week. It is the single most expensive start-up cost I have, more so than the brewhouse! It wasn't supposed to be that way, but sh*t happens.