
Contaminants in water can be colorless, odorless and unhealthy.
The U.S. water supply is considered to be among the safest in the world, with all but 15 million Americans receiving treated tap water from public water systems.
For those 15 million relying on drinking water from private wells, though, regular testing or a water filter may be the only protection from contaminants that can be colorless and odorless, but do real harm.
Read it all here.