TDS what is exceptable water quality

Tap=470+
After RO= 17ppm (last time I checked)

I consider anything under 20ppm acceptable, but it depends on what is in the 200ppm. Some impurities may make your life a bit more complicated (especially phosphates).
 
My tap water is always above 1000ppm and more commonly around 1100ppm.

After RO I average 30-65ppm (50 gpd @ 98% rejection)

After dual stage DI, 0-15ppm

I would love to have tap water below 100ppm, I would spend much less on prefilters, membranes, and DI resin.
 
Wow, I'm surprised at these high TDS measurements. My tap is at 35 around the Seattle area. Now I wonder if I even need my RO/DI, lol.
 
Keep in mind TDS is not a good measurement of water quality (other than to point out the water is pure). IMO the aquarium industry likes to shoot for zero ppm because it is pure and is the only way you can be sure you are not putting anything bad into your water. If you could have 1000ppm water and it just so happened the 1000 ppm was calicum and magneseium and other trace elements found in sea water it would be no big deal. Water companies are servicing humans so they don't care if human safe minerals and substances get through to your house. :) Our water (Thousand Oaks, CA) comes out of the mountains and gathers all kinds of neat minerals on the way down which is why it has a high TDS, yet still safe for humans.
 
Near Salina UTAH, the surface water is pumped through the old workings of an operating coal mine before it is allowed to run down into the towns water facility. The mine actually improves the water by allowing ot to absorb minerals and at the same time filter out the organics from the surface runnoff. I spent a few weeks underground there 2 years ago and was amazed. If the mining conditions cause a drop in the output of MINE RUNNOFF, the town complains....

Kinda cool to say the least.
 
My rule if you have to chew your water donââ"šÂ¬Ã¢"žÂ¢t drink it. Ill be 422 years old next week.

Thanks landragon 40 gallons only wow. Really phosphates are my main concern with 90% of the water I use. Im using about 200 gallon a week will probably be going up. Culligan has very large carbon and deion units. i need to get some prices if memorie searves me they use to average less than $0.02 /gal. Their tanks stood 4 feet tall and 12" in diameter and they changed them out for you when needed. I need get some prices and do some math.


. RobinsonFam1 my fellow gwinnettion and I have chlorine, no chloramines here (last I checked 3years ago).
 
AWI and some of the other vendors have large industrial size units at reasonable prices.

I have never seen culligan have a reasonable price on anything... but I could be wrong.
 
you spent a few weeks underground? now i uderstand you better. but it dose sound cool.

our water goes though Georgia clay. Oh No, im talking to someone in a defferent state about how nice our water is. my wife is right, i need a life;)
 
I spent the last 15 years working in underground coal mines (and other types of mines and tunnels) all over the country.... Lots of different materials and types of work, but suffice to say I have placed millions of pounds of dual component polyurethane and hundreds of thousands of yards of lightwight foamed concrete. I now own an IT consulting company.... still work underground on ocassion... and spend the rest of my time with my projects, the reef being one of them.

My largest concern now is reducing my waste water. I am tired of filling up the washing machine. I have considered using multiple membranes daisy chained. In theory the cost is the same (other than startup) and the wastewater is almost reduced to nothing (similar to the large commercial units).

There was a thread here someplace about it.

Bean
 
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