I have always bought my RO from a LFS. I recently tested it for the first time and TDS was 7-10pmm and phosphates was 0.04ppm. I told LFS and they said these numbers weren't a problem. Unless I'm mistaken, this just isn't right. So, if I want pure water, said LFS is no longer an option. Would it be better to use distilled water instead of the LFS RO water until I can get my own RODI unit?