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Reverse Osmosis water purifier effects on a septic system: Does a home reverse osmosis water treatment system damage the septic system by the disposal of its concentrate water into the septic tank?
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What about water volume from reverse osmosis water treatment systems? These can vary by manufacturer with a range of 3:1 to 10:1 of waste to product efficiency.
"Typically" for every gallon produced with a top of the line system, 3 to 5 gallons goes into the septic tank. Less efficient systems (regardless of shutoffs) can dump up to 10 gallons to waste for every gallon that goes into the storage tank. Don't despair...the membranes of ten years ago dumped up to twenty five gallons per gallon of product.
Ask the manufacturer of your reverse osmosis water treatment system for their efficiency, platform statement, and percent recovery data.
An excellent resource for membrane information is the National Sanitation Foundation. We are not confident about the generalized water quantity usage information obtained via EPA publications, Small Flows, etc.
If you ask reputable reverse osmosis treatment system manufacturers, you should be able to get reliable water usage and water flow information. -- Larry Newcomb Encinitas Learning Center
[Thanks to Larry Newcomb Encinitas Learning Center, firstname.lastname@example.org, for the above opinion--DJF]
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