ZeroWater’s Water Cooler Filtration System saves your home or office money, storage space and heavy lifting. Simply pour tap water into the refillable bottle and watch as the 5-stage ion exchange technology removes virtually all dissolved solids for the purest tasting water. The refillable bottle fits most standard coolers to dispense hot or cold filtered water. The 5-stage filter transforms your tap water into delicious, TDS-free drinking water. All ZeroWater products include a free 3rd party Water Quality Meter to test your water to ensure the highest quality filtration on the market. Get more out of your water with ZeroWater's 5-Stage Water Filtration. 5-Stage Filtration: Stage 1 - Removes suspended solids such as dust and rust that make your water appear cloudy Stage 2 - Removes additional suspended solids Stage 3 - Removes organic contaminants; pesticides, herbicides, Mercury, Chlorine, Chloramine, and stops bacteria from growing Stage 4 - Removes inorganic compounds i.e. metals, nonmetals and radiological contaminants Stage 5 - Removes remaining suspended solids, holds the resin in place What is TDS: Total Dissolved Solids (TDS) refer to minerals, salts, metals including lead, chemicals, fluoride and runoff polluting your drinking water. ZeroWater Technology is the only water filtration system to remove 99percent of TDS, equivalent to TDS in purified bottled water. Get more out of your water™ with ZeroWater's Premium 5-Stage Water Filtration. Gender: unisex.