Abstract: An array of laundry washing machines that includes a plurality of laundry washing machines. Each of the laundry washing machines has an operator side. A plurality of pump systems, each of which is connected to two or more washing machines, is provided. For 80% to 100% of the laundry washing machines in the array, adjacent laundry washing machines having the operator sides out of alignment from one another by less than 90 degrees are not connected to the same pump system.

Abstract: A laundry treatment composition supply system to supply laundry treatment composition to multiple washing machines. The system can include a first supply container and a second supply container. Each of the supply containers can be operably engaged with a level sensor. Upon a low liquid level signal from a sensor associated with a container, a controller system can switch supply of the laundry treatment composition from the container having a low level to another container. The laundry treatment composition can be pumped from one supply container or the other supply container.