Softened water is considered safe to drink in the majority of cases.
How can water that contains salt be safe to drink?
The first misconception is that softened water contains salt – in fact it doesn’t even enter the water supply, it is only used to soften the resin.
If we break this down into daily nutrients, the increase of salt by the average individual drinking two litres of softened water a day is about 7% – a glass of milk can have up to five times more sodium in it.
The World Health Organisation’s (WHO) position on drinking softened water is: “There are no firm conclusions on whether it poses long-term health risks so no health-based guidelines are proposed.” In over 90 years, there has never been a reported health-related problem associated with a water softener.
However using softened water isn’t recommended when mixing baby feeds or those on a low-sodium diet prescribed by a medical practitioner.
The Drinking Water Inspectorate (DWI) recommend that the concentration of sodium in drinking water should not exceed 200 mg. Some parts of the country have very hard drinking water, softening this water will cause increased sodium content that may not comply with the regulations. In these cases, softened water wouldn’t be suitable, instead a hard water filter can be added to the tap for safe drinking water.