All require careful handling and disposal. Similar to glycol used in car radiators and has a relatively high oxygen demand when it breaks down in waste water. These contain fire fighting foam which has a high oxygen demand when it breaks down in water systems. The waste water contains oils and greases which have a high oxygen demand when they break down. Aircraft tanks are pumped to special vehicles and transported to approved drainage points connected to foul sewers.
Small spills can sometimes occur.
Water supply and treatment in turn consume resources. These materials can enter the ground resulting in land contamination or enter local water courses.