Does water softness make a difference?
Soft water (water that makes soap suds easily) can be more corrosive and therefore might dissolve higher levels of lead. Some home treatment devices, such as water softeners, also can make water more corrosive. Because of the mineral content of Denver’s water, a coating commonly builds up inside pipes and plumbing fixtures over a period of years, protecting any material containing lead from corrosion. That’s why likelihood of lead in tap water diminishes greatly as a house grows older and why many older homes with lead plumbing don’t have high lead levels.
