Top 3 Under Sink Reverse Osmosis Microplastic Water Filters In 2024

Is an under sink reverse osmosis water filter right for you?

Reverse osmosis is the best way you can filter your water from viruses, bacteria, heavy metals, and most importantly, microplastics.

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Deciding to move to a reverse osmosis water filter to remove microplastics from your drinking water is already a great step, but you might be wondering what kind of reverse osmosis filter you should get. 

RO filters are commonly broken down into three categories - under sink, and countertop, and whole-house. 

Countertop filters are generally easier to install, being plug and play solutions that require no technical changes to your plumbing and can help you start drinking microplastic-free water right away. Some consumers may be in a situation where they are moving often, or are unable to make changes to their plumbing (in an apartment, for example), so a countertop would be a perfect solution.

However, countertop RO filters will generally be more expensive, and need their filter units replaced more often. Additionally, they filter water more slowly and require manually dumping residual water and refilling of containers, which could be cumbersome if you and your family drink a lot of water daily.

Also, countertop water filters are quite large, nearly the size of a PC tower and could take up precious countertop space in your kitchen.

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Whole house water filters are the largest in size, capacity, and flow rate, and are designed for filtering water for all of your home applications, such as multiple kitchen and bathroom sinks, showers, and washing machines. This requires the most plumbing and installation effort, so it might not be the right solution for everyone.

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All variants require remineralization at some point before drinking to ensure you are re-adding important trace elements that are found in water naturally, but some products can automatically add these elements back into your drinking water, which we will mention in picks.

If an under sink variant sounds like the option for you, read on to see our recommended picks.

Our top reverse osmosis microplastic water filters.

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Budget Pick: Express Water RO5DX Reverse Osmosis Filter - this under sink reverse osmosis filter can be bought for $200 less depending on sales and is our cheapest recommended filter on this list. Sporting a relatively fast flow rate of 50 GPD (gallons per day), this product even comes with an additional 4 filters included, greatly expanding the value of the buy.

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Highest Flow Rate Pick: APEC Water Systems RO-PH90 Reverse Osmosis Filter - if you are looking to filter large quantities of water for a multi-kitchen application, look no further than the APEC RO-PH90. This water filter can disperse 90 gallons of water per day without compromising filter quality, and also includes a complimentary sink faucet.

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Best Filter With Remineralization: iSpring RCC7AK Reverse Osmosis Filter - as mentioned earlier, you need to re-add trace minerals back to your drinking water to avoid deficiencies from completely filtered water. The iSpring RCC7AK water filter has a built-in remineralization tank that automatically adds these minerals into your filtered water for better taste and health.

It is worth mentioning that iSpring also has a cheaper version of this water filter, the RCC7, without remineralization if that is not an important requirement for your use case.

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Conclusion

Regardless of which type of filter you decide to purchase, under sink or countertop, you will be taking steps towards removing microplastics from your drinking water and greatly reducing your overall microplastic exposure for you and your family.

If you are interested in learning more about ways you can reduce your microplastic exposure, read more in our guide on going microplastic-free.

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