The Gray Water is water that is considered waste and not to be used for cleaning milking or other food-related systems.

Usually including recycled water from a lagoon or milk house waste. Even water only used to cool milk in a plate cooler is considered Gray Water, though it is often fed to cows to reduce total usage.

Other /More definition:
A Gray Water is Water that is considered waste and not to be used for cleaning milking systems. Usually including recycled water from a lagoon or milk house waste. Even water only used to cool milk in a plate cooler is considered Gray Water, though it is often fed to cows to reduce total usage.

Other /More definition:
A Gray water is Domestic wastewater composed of washwater from kitchen sinks, bathroom sinks and tubs, clothes washers, and laundry tubs (USEPA, 1989).