That shared language is the whole point.

Yeah, and even the flow rate thing can be tricky... a lot of those pre-made sink assemblies have way higher gpm outputs than you'd guess just by looking at them. I pulled the specs on a standard three-compartment once and the math just didn't match the old fixture-unit chart at all. That's probably why the Springfield inspector failed it, they're finally catching up to the actual plumbing code instead of the old rules of thumb. You really have to dig into the manufacturer's data sheets now before you even order the interceptor.

Yeah, I always figured tap water was fine for a quick rinse (you know, just to get the big stuff off). But then I saw the weird white haze it left on my own mask after it dried, like a ghost of every drop. Your buddy's right, that film is real, and switching to distilled water in a spray bottle totally fixed it. It's one of those small things you don't notice until you try the other way.