The government doesn t do it, the Health Department doesn't do it. It s up to you - and it s the only way to make sure your water is drinkable. Even if it looks good, smells good, and tastes fine, it may still contain dangerous levels of hazardous materials. Water is a great solvent. It dissolves many materials while on its journey through the soil to your well, and within your household pipes.
Pure water contains only water molecules.
You re most likely to encounter pure water if you buy distilled water. Taste distilled water sometime. You ll find it seems flat and tasteless. This is because the minerals that are naturally present in water, such as calcium, magnesium, sodium, or chloride, give water its flavor. There are a number of ways that unwanted contaminants may get into your water.