Xylem Inc. (United States)
Pentair Plc (United States / Ireland)
Culligan International (United States)
Aquasana LLC (United States)
SpringWell Water Filtration Systems (United States)
iSpring Water Systems (United States)
APEC Water Systems (United States)
Kinetico Water Systems (United States)
BWT AG (Austria)
Ecosoft (Austria / Ukraine)
3M Company (United States)
Honeywell International (United States)
