So I bought one of those overpriced 2.5 gallon kegs to use for sparkling water, because I got tired of using liter bottles with a carbonator cap. The keg o-rings smelled horrible of outgasing, so I replaced them. The keg itself smelled like mothballs. I think it's the rubber base. I cleaned the inside and all the lines with oxyclean, water rinse, and a sanitizer rinse. The inside didn't smell, but the rubber base did a bit.
I filled it with spring water. Shook the daylights out of it at 35 psi and 40°F. It was tasting ok. Left it in the keezer overnight, and this morning it tastes like plastic.
It's running through 15 feet of 3/16" kuriyama bevlex 200, which I use for beer with no problems, but much shorter.
Anyone get a plastic taste from that length of tubing? I think it's the tubing, it seems to fade a bit if I dump a large glass full. The new water source also tastes a bit different, but not plastic, just mineral.