In some cases, these water sources can be used as an alternative to fresh water by: • Filtering out undissolved minerals • Determining the total alkalinity (must be less than 175 PPM) • If there are dissolved organics in the water, they may need to be removed – such as in a water treatment plant or a continual addition of chlorine, or some other biological killing chemical. • Hard water, (presence of calcium and magnesium in the water, represented by a total alkalinity being over 60 PPM), along with soap will create soap scum that could create problems. Coolerado cannot know the details of your water supply and therefore how the water will react with our evaporation process. You should have your water tested first to properly address any water quality concerns.