Reverse Osmosis Filters

[CWO4GUNNER]

Just an after thought. Since it makes sense that strait 100% RO would never be used but mixed with tap water like 50%. Why would (as mentioned earlier in a earlier post) you replace an RO membrane at 90% loss of efficiency? Why wouldn't you wait until the RO membrane TDS efficiency matched the ratio of RO/Tap water mix and simply use less tap water until membrane efficiency dropped to like 50%.

I mean in my case (800 TDS) If I were mixing RO/Tap 50/50 for 400 TDS result. I would definitely ride the membrane down using a greater percentage of RO to at least to where it was putting out at least 400 TDS for the same result as mixed saving on membrane cost right?

 

[Pavo71]

Just an after thought. Since it makes sense that strait 100% RO would never be used but mixed with tap water like 50%. Why would (as mentioned earlier in a earlier post) you replace an RO membrane at 90% loss of efficiency? Why wouldn't you wait until the RO membrane TDS efficiency matched the ratio of RO/Tap water mix and simply use less tap water until membrane efficiency dropped to like 50%.

I mean in my case (800 TDS) If I were mixing RO/Tap 50/50 for 400 TDS result. I would definitely ride the membrane down using a greater percentage of RO to at least to where it was putting out at least 400 TDS for the same result as mixed saving on membrane cost right?

By the time that you got to 400 TDS I would think that you would be down to a trickle of an output.

 

[SubRosa]

CWO the RO produced where I work sets of an alarm when it hit 5 on the TDS. An RO membrane only removes a certain % with each pass. TDS around here is around 150. Youur RO guy is just talking about the RO produced in your area. If you're really paying $.025 then he's right you can't make it cheaper, and he's losing money selling it to you. If you're paying $.25 then you can make it cheaper yourself, unless your water rates are considerably higher than mine.

 

[CWO4GUNNER]

CWO the RO produced where I work sets of an alarm when it hit 5 on the TDS. An RO membrane only removes a certain % with each pass. TDS around here is around 150. Youur RO guy is just talking about the RO produced in your area. If you're really paying $.025 then he's right you can't make it cheaper, and he's losing money selling it to you. If you're paying $.25 then you can make it cheaper yourself, unless your water rates are considerably higher than mine.

Haha, the RO man actually said that very same thing, that he makes no money selling RO and only sells it to bring customers to his health food store to buy other stuff and RO bottles and dispensers which is all pricey. His RO registers 14 TDS on my meter compared to Aquafina bottled water which actually resisters 1 on my meter.

We just have super hard well water out here with the rivers running off the mountains collecting all the minerals. I cant imagine someone buying RO with 150 TDS, I wish I had their problem.