Chlorides & Sulfates

Almost all natural water supplies contain chlorides and sulfates. In small amounts, they are not significant, but in large concentrations they can cause problems. Low to moderate amounts add palatability to drinking water and are desirable for that reason. However, excessive concentrations make water unpleasant to drink.

Sulfates have a laxative effect and medicinal taste. Large quantities can also indicate that the water is extremely hard, has large amounts of sodium salts or acidity. Chlorides present in large quantities give water a salty taste  -- brackish and briny. Both chlorides and sulfates contribute to the total mineral content and add to the electrical conductivity of water. They can be easily and substantially removed using reverse osmosis, deionization or distillation.