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Old 05-04-2011, 07:53 PM   #1
Nov 2009
gilbertsville, pa
Posts: 2

First off, thanks for all the information you guys have provided here. Here are results from my ward labs report:
Ph - 7.7
TDS- 502
mmho/cm- .84,
Cation / Anion, me/L- 9.3/9.5
Total Hardness, CaCO3 - 405
NO3-N - .3
SO4-S - 74
CI -38
CO3- <1
Total Alkalinity as CaCO3 - 189

My first thought was this is really hard water. I have a 5 gal. RO system, but it takes a while to "make" the water to replenish. Any thoughts on the tap analysis?

I was also wondering how mixing the tap water with RO water works. If I dilute 50%, does that in turn reduce the amount of disolved solids by 50%?

Thanks for your help!

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Old 05-04-2011, 08:43 PM   #2
mabrungard's Avatar
Feb 2011
Carmel, IN
Posts: 4,315
Liked 682 Times on 529 Posts

Download Bru'n Water and load your tap water data in. There is a built in estimate of RO water parameters on the Water Adjustment sheet. You can dial in any amount of dilution from 0 to 100 percent and the resulting water profile is calculated for you.

To answer your question, yes diluting by 50% will roughly reduce your TDS and any of the concentrations by half.

Yep, rock hard water you've got there.

Get a bigger tank or some sort of vessel so that you can store more RO water and not have to wait.
Martin B
Carmel, IN
BJCP National
Foam Blowers of Indiana (FBI)

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