1:5:10:365 EcoTip Blog

July 12, 2008

:194 RO Waste Water

Welcome to today’s 1:5:10:365 Tip for becoming a better steward for our home and planet environment.

1:5:10:194 EcoTip: Reverse osmosis units use several gallons of water to process each gallon of drinking water. The process water is frequently routed down the drain – but it could easily be used to drip water plants, or for other non-drinking uses.


 Additional Information:

Suggested Review: :172, :190, :191, :192, :193

The following information is quoted from the third edition (released in May 2008 ) of Prescriptions for a Healthy House: A Practical Guide for Architects, Builders & Homeowners:

The most valid criticism of RO is that anywhere from 3.5 to 5 gallons of water are rejected for every gallon of purified water produced. Many inexpensive, non certified RO systems have much higher rejection rates, are extremely wasteful, and still do not deliver verifiable contaminant reduction, the primary reason for using reverse osmosis.  

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