International Water-Guard Industries Inc., formerly International Waterguard Industries, is a Canada-based Company, which provides aircraft water treatment and water system solutions. The Company produces four models such as the IWG-A6, IWG-A4, NPS-A6, and NPS-A3, for water flow rates from 4 USgpm down to 1USgpm. It offers IWG pump products such as Pressure Pump, Booster Pump and Circulation Pump. The Company also offers IWG-ES Water Heaters. It has developed a Circulating Potable Water System (C-PWS), is a freeze-proof aircraft water system. This system has been installed and certified on Airbus A310, Airbus ACJ, Boeing 737/BBJ, Bombardier Global Express, and Gulfstream G-IV aircraft.