whole house reverse osmosis #118972 - Ask Extension


whole house reverse osmosis #118972

Asked March 27, 2013, 4:06 PM EDT

I have a domestic well in Nunn, CO and have a significant sodium content (228 mg/L).  It is causing erosion of the swamp coolers and other issues.  I'm wondering if reverse osmosis is a viable solution.  I've heard it will correct the problem, but some resources suggest that the maintenance and cost are just not worth it. 

Weld County Colorado

Expert Response

Hello, A reverse osmosis (RO) system for domestic water supplies generally works best as a point-of-use rather than whole house treatment device. As you have read, the energy cost, maintenance and need for brine disposal are probably not worth it. Also, you lose a significant amount of water as brine and treating a smaller amount of water (for example - drinking purposes) is less wasteful. 
My guess is that the sodium itself is only part of the corrosion problem and these is an overall high Total Dissolved Solids (TDS), but would need to see a water test.

Troy Bauder Replied March 28, 2013, 11:57 AM EDT

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