If you're using the Rubbermaid Roughneck trashcans, the thin plastic in the 30 to 40 gal. range, use them only for very short-term storage. It happened to me with the green 45 gal. After about 3 weeks of covered storage in it, the RO/DI water that went in with a 000 TDS, had a reading somewhere in the high teens. I don't know what leached but it couldn't be good.
For long term RO/DI storage you want the Rubbermaid, Brute, HDPE (High Density PolyEthelene); food grades come in white, gray and, yes, yellow. They're a bit pricey. But you can also get the wheeled dolly that attaches to the bottom of the can. I've never found it easier to move 44 gals. on my basement floor.
HTH, Ed