Soft Water vs. Hard Water: Which is Best for Drinking?

Naturally-occurring fresh water is either hard or soft. Both are useful, but only one is best for drinking purposes.

• Simple yet essential

Types

• When water is hard, as spring water is, it contains calcium, magnesium and other trace minerals. Soft water, like rain, have very few minerals. (See Reference 1 below.)

Water Softeners

• Soft water occurs naturally, but is made in the U.S. with water softeners that replace the calcium and magnesium with salt, a potential problem for those on extreme low-salt diets. (See Reference 1 below.)

Expert Insight

• According to the World Health Organization (WHO), there are potential health hazards involved with drinking soft water that has had the minerals removed. The organization cites the lack of essential mineral nutrients, effects on the intestinal mucous membrane, and the potential for bacterial regrowth. (See Reference 2 below.)

Warning

• Soft water absorbs compounds that it comes in contact with, so it can absorb toxins such as lead from pipes or storage containers. (See Reference 2 below.)

Considerations

• Soft water is better for washing and cleaning but it clearly is not the best choice for drinking purposes. (See Reference 1 below.)