Several years ago, I used to buy my water from "Water-To-Go" then, A new LFS opened near me. They had a real great price for RO/DI water so I tried to support them and began purchasing my water from "Mile High" LFS (Now out of business). Soon, my parimeters started going out of whack. I purchased a RO/DI system, Had it installed and with the TDS meter that came with the system I tested my Tap water. Then, some water from Mile High and to my surprise (PO'D) their water had a worse reading then my tap water. I think it probably was straight from the tap to the large tank and into my containers.
I gave up on them when I saw them trying to catch and bag a 4" Foxface Rabbit fish and the owner argued with me when I told him their spines were as toxic as a lion fish. He insisted the fish wasn't toxic.
Wonder why they went out of business.