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Regular filter replacements are an important part of maintaining a reverse osmosis system. If you forget to do it, you will eventually notice a significant decline in the quality of your water.
However, what about cases when you replace one or more filters with fresh ones, and water actually tastes worse afterward?
Your RO water may taste bad after changing filters for the following reasons:
“Why does my RO water taste bad after changing filters?”
If your reverse osmosis water tastes bad after you’ve just changed the system’s filters, the problem can be traced down to one of several common causes: You might be dealing with a membrane or another filter that’s not properly primed yet, or you may have done something wrong when installing. It’s also possible that you’re using a lower-quality filter…
Reverse osmosis membranes are kept in a special preservative until they’re ready to use. Sodium metabisulphite is the most commonly used solution for this purpose.
Because of this, RO membranes have to be primed before use, which typically involves flushing the entire RO system a few times. You should ideally let the storage tank fill up and discard it at least two to three times before using the water. For more information, check manufacturer instructions!
The same goes for other filter elements you might be using in your filtration setup. This is particularly true for carbon filters, which can contain loose fibers that can affect the taste of water. Check the manufacturer’s guidelines for each of the filters you’re using to ensure that you’re priming them correctly.
And of course, it’s also possible that you didn’t install all the filters correctly in the first place. This can cause water to bypass it completely, negating the whole point of using a water filtration system. Also check for potential leaks.
You might also be unlucky enough to have bought a defective filter. This can be difficult to determine, so you should check with the manufacturer to see if they can assist you in your troubleshooting. In many cases, especially when working with a reputable manufacturer, you’ll usually get a replacement filter for free.
Did you recently switch to a different brand of filters? If you did, and you were especially motivated by the lower price, this could be a reason why you’re now dealing with an unpleasant taste in your water. It’s possible that your new filter is simply not as good as the original one.
Maybe it has been a while since you used your reverse osmosis system the last time – because filters were bad and you didn’t have time to order and install new ones. Whatever the reason, stagnant RO water can develop unpleasant taste especially when stored in a typical RO tank. So before you start using your newly-installed filters, make sure to flush the storage tank 2-3 times.
Fixing the issue depends on what exactly the cause of your problem is.
Reverse osmosis water should have no taste at all – that’s because it’s pure, clean water, with no impurities. Impurities are normally what gives water its specific taste. That’s why some people, upon first switching to drinking reverse osmosis water, may report that it tastes flat. It can take a while to get used to that, but after that, you’ll immediately notice when you’re drinking non-filtered water.
If you have any questions about why your RO water tastes bad after changing filters please don’t hesitate to leave a comment below!
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