Hardness
Iron (causing Bad Taste & Odor, Rust Stains)
Iron is one of the most common contaminants in well water. Iron is not a health concern at levels encountered in normal drinking water. Higher concentrations of iron can cause an objectionable metallic taste and orange or rust-colored staining of sinks, toilet, bathtubs and clothes.
pH
Water with a low pH level (potential of Hydrogen) is considered acid water. Water with a low pH can cause damage to sinks, faucets, hot water tanks, drainage and supply lines. These problems can cause extensive repair costs or replacement. Pitting on plumbing fixtures usually indicates low pH.
Sulfur (causing Bad Taste & Odor)
Sulfur is a colorless gas which causes damage to plumbing and gives off an offensive, “rotten egg” odor.
Chlorine
When Chlorine mixes with organics in water, trihalomethanes (THMs) are formed. THMs are reportedly cancer-causing agents. Substantial amounts of chlorine are not appropriate for inside home and drinking use.