Not only is dumping oil and contaminants down the drain morally wrong, but it’s also illegal. The Clean Water Act puts regulation on discharges of pollutants, and if you do not properly comply, you could be faced with some severe penalties. For example, in the LA market, you could be charged $2,500 PER DAY until you have an oil-water separator installed, and the maximum penalty for a violation from the EPA has increased to $51,570 PER DAY.