Remodeling the kitchen and plan on plumbing in a KVDW Speedster. We drink RO water and to date I've been using that and adding minerals myself to my reservoir machines. I've attached my municipal water report (the Glendale column). I think my preference would be to use my RO and remineralize, but could also filter straight from the pipe. What do you guys recommend?

Thank you!

For reference, I have these two RO systems and can use either if it matters. Maybe there's just a good remineralization filter I can use with the 6-stage?

https://www.amazon.com/gp/product/B00SG ... =UTF8&th=1

https://www.amazon.com/gp/product/B00I0 ... UTF8&psc=1

Besides the high hardness, the killer issue with water from this plant is the 50 - 70 ppm chloride level.
(https://www.glendaleca.gov/home/showpub ... 2011830000) . Chloride is a corrosion concern for your machine and the only practical way to reduce that is RO.

You could use the Apec RO water provided it has a remin filter. The standard calcite filter from Apec will do a reasonable job of adding a small amount of calcium carbonate to your water, maybe 15 - 40 ppm of hardness and alkalinity as CaCO3. If you want more than that you could use the water as a base and add minerals to it, using that in your reservoir or in a plumbed-in carboy system.

Thank you. Yeah I wanted to start with the RO and then remineralize into the machine (nice to have a controlled start). If the APEC 6th stage is adequate then great! I don't need to reinvent the wheel. I thought maybe I'd need a BWT or something after. But as long as the machine is safe and I'm in the 97th percentile of good, I'm happy to keep it simple.

-S

A huge advantage of the Espresso Cart system arose from your very question and it's the uncertainty of the performance of the remineralization process and how it works over time? How will it work as the filters wear and the water coming in changes as well. The cart system takes all that worry out and really isn't much work once set up. If you can work it out to have a large enough tank - say 15-20 gallons you might need to fill it only twice a year.

I can appreciate the benefits but I'd rather just use proper filters

I have to reminearalise as my rainwater is too soft, high alchalinity and no salts. luckily I dont have to worry about chlorine in any way.

I have installed a BWT Bestmin M to remineralise as advised by LaMarzocco.
Im having issues with reducing amounts of salts so somethings up with the BWT.
Will report back when solved (or improves

Maak wrote:I have to reminearalise as my rainwater is too soft, high alchalinity and no salts. luckily I dont have to worry about chlorine in any way.

I think based on your earlier posts that you intended to say that it has very low alkalinity.

Maak wrote:I have installed a BWT Bestmin M to remineralise as advised by LaMarzocco.
Im having issues with reducing amounts of salts so somethings up with the BWT.
Will report back when solved (or improves

If you do some testing try to pay attention to whether your test sample comes from a stagnant filter without a flush, or if it comes from a recently flushed or recently flowing filter. The Bestmin is rumored to give you high mineral when the water is fresh out of a filter that has been stagnant for a while.

If you test with a conductivity 'TDS meter' let us know the model and the calibration factor if you have a meter that lets you choose that. And try to test with the water at about 25 ℃.

If you test with an API GH/KH kit, you will get better precision it you find a sample container or shot glass that holds a 10 ml sample and use a 10 ml (10 gram) sample instead of the usual 5 ml. Then multiply your number of drops by 9.8 to get your hardness (GH) or alkalinity (KH) value in ppm as CaCO3.