Cathal Walsh
Content Creator
Wednesday, 12th June 2019
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Table of Contents

Maximum amount allowed in water:

250 mg/litre

What is it?

Sulphates are a chemical unit combining sulphur and oxygen.  It occurs naturally in some sources but is also used widely in industry. Sulphates are used in the manufacturing of numerous products and chemicals including dyes, glass soaps etc. Barium sulphate is used as a lubricant in drilling rigs for groundwater.

How does it get into water?

Sulphates are present naturally in nearly all ground water sources. The level of sulphates present however depends on the local geological formations. Raised sulphate levels will be detected in polluted water sources.

Does it pose a risk to health?

There is no major negative health effects associated with raised levels of magnesium in water. It does however give a laxative effect especially when there are raised levels of magnesium or sodium in the water. Excessive sulphate levels can also cause an unpleasant taste and bad odour in water and even lead to corrosion of pipes.

How do I check of them?

You can check your sulphate levels by getting a test from an accredited lab, such as one that may be purchased here.

How do I remove them from my water?

Sulphates are very soluble in water and are not removed by conventional flocculation or filtration methods.  To remove sulphates from water you would have to carry out distillation or reverse osmosis.

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