Reverse Osmosis Drinking-Water Systems
Reverse osmosis (RO) is a point-of-use treatment typically installed under the kitchen sink to improve drinking and cooking water. It's a common companion to whole-house filtration or softening, not a replacement for them.
What RO is designed for
RO membranes are designed to reduce a wide range of dissolved substances in drinking water. The system typically feeds a dedicated faucet at the kitchen sink and often includes prefilters and a postfilter.
How it differs from whole-house filtration
Whole-house filtration treats water at every fixture; RO treats water at a single tap. Each has a role. RO is not typically installed for shower, laundry, or landscape water.
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Maintenance
Prefilters and postfilters are replaced periodically. The RO membrane is replaced less frequently. Following the manufacturer's schedule protects performance and longevity.
Frequently Asked Questions
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