“Legally Safe” and “Totally Safe” mean two completely different things, according to the Environmental Protection Agency (EPA). The CWA (Clean Water Act) regulates nine contaminants. If tap water contains less than the maximum acceptable levels of those contaminants, your water is legally safe. But is that “legally safe water” safe enough for domestic use like drinking and cooking. The EPA is investigating 10,000 other contaminants that are not regulated, known to be in tap water, with safety unknown. Hence, there is reason why you should ‘treat’ “Legally Safe” water to make it “Totally Safe”.