It will be different all over the country and vary even from city to city. This site is a great place to start. Kendra can give you some fundamental things that may pertain to your situations.
I assume some of you do actually capture the waste water for proper disposal. What equipment do you guys use, I have seen many different gadgets to contain, capture, pump away, and filter. Just looking for some advice on what works.
I have seen many guys at night cleaning in my area with no concern at all about where the run off goes.
Im using a barrel with a cut out of it and a grill about a foot and a half off the bottom to wash filters. I use somthing simiular to a pan that has been cut from a barrel for fan cleaning. both get the sump pump treatment. When the fan is far I run the hose down the duct into the kitchen. You can also use a tarp like when washing trucks for the filters. None of the above work in china.