judyok Posted June 20, 2015 Report Share Posted June 20, 2015 The test tube on the left is R/O water from Walmart straight out of the bottle. The test tube on the right is distilled water. I guess I won't be paying for R/O water from Walmart anymore. I'm not keen on the water starting with nitrates at 5 ppm. Edwardnah and MableBile 2 Quote Link to comment Share on other sites More sharing options...
EricM Posted June 20, 2015 Report Share Posted June 20, 2015 any idea what type of RO system they are using, or when it was last serviced? but yes good idea to always test before using. Quote Link to comment Share on other sites More sharing options...
judyok Posted June 20, 2015 Author Report Share Posted June 20, 2015 The machine has a sticker on it with blank line that are filled in by whoever services the machine and the last service date was 05/18. I can't remember the name of the company providing the R/O water, but I won't be using it again. My tap water nitrates are at zero for pete sakes. Quote Link to comment Share on other sites More sharing options...
Nexus6 Posted July 10, 2015 Report Share Posted July 10, 2015 Funny you should mention this, i was at walmart and saw that machine too and was thinking to myself, I should try this afterall its $.22/gal vs $.88/gal for DI water. But i think ill stick with DI water, its worked best for me. Quote Link to comment Share on other sites More sharing options...
RyeGuy411 Posted July 10, 2015 Report Share Posted July 10, 2015 RO water from the WalMart machine can be fine it depends on the WalMart. I have used that machine at my local store for almost a year and always get water with TDS around 5 with no issues. Quote Link to comment Share on other sites More sharing options...
judyok Posted July 11, 2015 Author Report Share Posted July 11, 2015 I'm thinking about taking my 5 gallon jug to another Wal-mart and test it. I'll let you know the results. Quote Link to comment Share on other sites More sharing options...
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