I am in the cotton country by Lubbock, TX. Those white plastic containers with the metal cage ALL contain numerous chemicals from hydrogen peroxide to Roundup and stuff more toxic. I have looked into them because they would be great for water, BUT none are usable.
I have checked with several chemical companys and all discourage them for anything other than what they were made for. They are not "food grade" which means chemical can leach into the plastic even with complete cleaning. I thought the hydrogen peroxide ones would be ok but the consentration is too great to take a chance. No one has a source for getting them new and even if you could the cost would be too much.
I am staying with my 55, 35, and 5 gallon food grade blue barrels. They take up a lot of room, but I know it will be clean when we need them.