Out of curiosity I checked out my city's website... lol they made it super simple.Maybe. We always test for chlorine when we respond to those calls and it's usually fairly easy to spot soaps and petroleums. But there are some cities that need the money and will fine anyone for any reason!
"ILLEGAL DISCHARGE
Any direct or indirect non-stormwater discharge to the storm drain system...." so anything that isn't rain storm water or rain storm run off xD
Anyway, the real concern is hopefully the broken foot heals. GL.