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Old 10-25-2012, 07:24 PM   #31
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High ferment temps are part of the problem. Here's a link to palmer's descriptions; http://www.howtobrew.com/section4/chapter21-2.html
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Old 05-11-2016, 05:58 PM   #32
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I have done side by side comparisons of 1 gallon extract brew and 5 gallon extract brew. Both used municipal tap water. The 1 gallon was boiled completely before fermentation. The 5 gallon I only boiled 2.5 gallons and diluted it with cold tap water up to the 5 gallons. Remember, chlorine is removed with boiling. The 1 gallon did not have the plastic taste. The 5 gallon (2.5 of which were not boiled) DID have the plastic taste. My policy, add Campden tablets to remove the chlorine if you do a half boil.

 
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Old 05-12-2016, 12:22 AM   #33
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I had this issue with the last place I lived in. First beer I brewed there I used half spring water but had to use half tap water because I didn't have enough bottled water. It was a pale ale and it sort of had that plastic off flavor to it that worsened over time. I didn't think it was the water, I thought it was more a temp control issue, so I brewed a Heady clone with all tap water as my next beer. I looked after the fermentation temps clearly but this time the beer had an even stronger plastic smell and taste to it. So much that it was undrinkable and I had to dump the batch. One of the only ones I've had to dump in over 4 years of brewing.
The next batch I brewed with all spring water and the issue was totally gone. It was definitely the chlorine/chloramine in the tap water.

Campden tablets will help with chlorine but I'm not sure if it helps with choramine. From what I remember, and this was a while ago that I was dealing with this issue, choramine can only really be totally removed by pretty lengthy contact time with a carbon filter. Perhaps maybe that was the only way to get rid of choramine using only a carbon filter... I can't remember... in any case I'm sure you can find more info on here about filtering chlorine/chloramine out of your tap water.

I just always buy good water to brew with instead of messing with my tap water. Good water in, good beer out!

Good luck!
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Old 05-12-2016, 02:19 PM   #34
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The very reason I started using spring water. Besides the improved flavor.
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