Caught a NY Daily News story out of Georgia: a Democrat National Committee campaign bus was photographed duping raw sewage into a local storm drain.
Kinda bad for one's image, even if one is not truing to be particularly environmentally friendly. The problem, of course, with storm drains is that they are not connected to a sewer; the dumped material (whatever it may be) goes, untreated, into a river, or the ocean, or the ground water. All bad.
We've survived 40-plus years in commercial janitorial service, with no environment-related actions, or even inquiries, against us or our clients for something we did. So we've pretty good evidence that our training protocols ("dump the mop water down the toilet"), supervision, and corporate culture all work. Even used mop water, dumped into a gutter, a planter or a parking lot, is an infraction (both local and national). We dump quite a lot of mop water so we've had plenty of opportunity, over the years, to get caught doing the wrong thing. If we were doing the wrong thing.
Not everybody in the cleaning business is as careful. On my way to work sits a small restaurant. I go by it, rather more often than I'd like late at night (there is something about running a janitorial operation). Sometimes, a bit after closing, I see their janitorial crew scrubbing out the patio, and draining the results down the drive to the gutter. Stopped trusting their food years ago.
Might be a good idea to check what your current janitorial service, or in-house janitor, is doing. Following the regulations is cost free, makes good practical sense, and avoids a visit from the various regulators.