Refrigerator with modular cartridges in fluid communication with the water supply

A refrigerator, comprising:

• a cabinet including a case having one or more food storage compartments defined therein and one or more doors positioned to access the one or more food storage compartments from an exterior environment, and the cabinet further including a refrigerator cartridge head assembly in fluid communication with a water supply;
• and
• one or more water cartridges, wherein at least a first water cartridge of the one or more water cartridges includes a housing having a first end and a second end, wherein the first end includes a first coupler releasably connected to the refrigerator cartridge head assembly between a first configuration wherein the first water cartridge is not in fluid communication with the refrigerator cartridge head assembly and a second configuration wherein the first water cartridge is in fluid communication with the refrigerator cartridge head assembly, wherein the second end includes a first cartridge head assembly, and wherein the first cartridge head assembly is configured to receive a second coupler of a second water cartridge.