Abstract: An auxiliary water container mounted on an agricultural chemical tank by a pair of straps which encircle the chemical tank and overlies shoulders formed on the auxiliary housing. Ridges formed on the shoulders outwardly of each of the straps restrain the straps from accidental displacement from the shoulders and the auxiliary water container from its position on the chemical tank. The auxiliary water container is further provided with liquid dispensing apparatus which is easily accessible along both sides of the chemical tank if chemicals are accidentally spilled on an individual in the vicinity of the chemical tank.