Only certain water solutions many be disposed of by using sinks and/or floor drains (see Lab Sewer Discharge Criteria in the Fermilab ES&H Manual). For those waste solutions that are acceptable in the sewer, be certain that the sink or floor drain is connected to the sanitary sewer. Some drains may be connected to storm sewers or directly to the environment, so if you don't know, ask your division ES&H staff. NEVER introduce flammable material, hazardous waste, solids, poisons or ethylene glycol (antifreeze) into any drain! Disposing of hazardous or radioactive waste inappropriately can have serious legal consequences for Fermilab and the Laboratory will not condone it. Please check with your division ES&H staff if you are uncertain how to dispose of any waste you generate.