misapplication, improper maintenance (including standard cleaning), neglect, alteration, Boann 382 N. Lemon Avenue # 122 Walnut, CA 91789 accidents, casualties, fire, flood, freezing, environmental conditions, water pressure spikes or other such acts of God. Warranty is also void if the following conditions are not met: Reverse Osmosis System must be hooked up to a portable municipal or well cold water supply. Water hardness should not exceed 7 grains per gallon or 120 ppm.