Sentence examples for water hardness from inspiring English sources

However, none of the currently serving wells can be classified as such and belongs to either moderately hard or hard category of water hardness.

Check with your local utility company to find out if your water falls on the soft or hard end of the water hardness scale.

"The water company has confirmed that water hardness can be quite variable," said Dale Kidd, a commission spokesman.

The most sophisticated systems, Mr. Bruursema said, initiate and complete the regeneration process either by measuring the amount of water that passes through the system or by sensing a change in water hardness.

Water hardness that is caused by calcium bicarbonate is known as temporary, because boiling converts the bicarbonate to the insoluble carbonate; hardness from the other salts is called permanent.

Data on water hardness were obtained from the Water Authorities and on mean annual sunshine hours from the Meteorological Office.

Water hardness and sunshine hours accounted for 39 and 49% of the variance in mortality from CHD.

This interdisciplinary work evaluates the effect of solution pH and water hardness in clofibric acid adsorption onto commercial activated carbons.

Although tap water hardness significantly affects the financial analysis, the greatest effect was found in the environmental analysis.

Key equipment: Water hardness test strips, access to a small freezer.

Water hardness increases the chance of heart diseases (WHO 2008).