Intended for healthcare professionals


Quality of drinking water

BMJ 2007; 334 doi: (Published 12 April 2007) Cite this as: BMJ 2007;334:755

What's wrong with tap water?

Tap water is not automatically safe. It may be contaminated with
bacteria, viruses, protozoa, and dirt. Have your tap water tested by a
laboratory. Then ask a water company to design a filtration and
system based on the lab results. If your water comes from a well, it may
necessary to have it softened, which means eliminating hard elements like
calcium, iron, and magnesium. Water is a complex, precious substance, and
we should not take its quality or supply for granted.

Competing interests:
None declared

Competing interests: No competing interests

14 April 2007
Hugh Mann
Eagle Rock, MO 65641 USA