Thank you, Yoop.
I have been using tap water, but the water here in Cherokee County, GA is very soft and light. I have the water profile at work and can post it if needed. The plastic flavor wasn't noticeable in my IPA, old ale, brown ale, or honey-dark. But was noticeable to the point of disgust in the California common.
If it is chlorophenols from the chlorination of the water, should I start using spring water or is there an additive i can use to remove the chlorine?
The sourness is likely green-ness. Will the acetaldehyde be reduced if the bottles are in the refrigerator, or should they be aged at room temperature?