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Heart Disease: Soft Water Vs Hard Water
Heart Disease: Soft Water Vs Hard Water

The relationship between drinking water and cardiovascular mortality, two beneficial factors continue to stand out - water "hardness" and total dissolved solids (TDS). Both are associated with lower mortality from heart disease.
 

Hardness refers to the amount of calcium and magnesium, or calcium carbonate in the water. The more calcium carbonate, the harder the water; lower amounts mean softer water.
 

TDS is a measurement of all the minerals in the water, not just calcium or magnesium.
 

One major study, the British Regional Heart Study, analyzed 253 towns in the UK. It fund 10% to 15% more cardiovascular deaths in soft water areas than in hard water areas.
 

The ideal level of water hardness - around 170 mg/l - resulted in lower levels of heart disease.

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