GoatFarmersInternational said:
The advantage of using the carbon filter is that it removes Chlorine compounds, which do indeed cause off flavors (and they aren't all removed by simply boiling, either). Bacteriostatically rated filters for the sink ensure contaminant-free water.
Yes, they have to be maintained once or twice a year depending on how much you use them. Bummer.
If you have a filter for regular use, you are correct. However, if you remove the filter and store it away between brew sessions, it will have to be sanitized before you use it again (unless you are doing full boils or boiling your top off water). Really, no big deal, but it is something to be aware of.
As far as authentic brewing water, I doubt that most municipal water sources in the US provide water comparable to that of the UK or Prague in terms of dissolved mineral salts... So one has to add gypsum or Burton's salts, for instance, so one loses nothing by filtering through activated charcoal.
I think you missed the point. I'm not saying that the municipal water is great for brewing, I'm saying it's a
known quantity. Adding salts for brewing isn't as simple as dumping in a teaspoon of this or that. You need to know the condition of the water you are starting with. In other words, if your water is hard, you will need to add more of some ingredients and less of others to approximate the water you are trying to create. So if you use filtered water, you need to do a water analysis so you know what your filtered water is like, so you know what to add. It's not like adding lemonade mix to water, it's more like someone handing you premixed solution with a cup of lemonjuice, 17 cups of sugar, and a gallon of water. At that point, you can't just follow the recipe like you were starting from scratch. You need to adjust your mix based upon what you've been given. You need to verify the ratios and figure out the batch size, and determine how much of whatever you need to add. Adding chemicals to water is the same thing. You need to know where your starting point is. As far as I can tell, brewing with filtered water is like being handed the premixed ingredients without being told the quantities. Brewing with municipal water, it already has a "flavor profile" so to speak which may or may not be good for brewing... but at least you know what the starting point is. Someone correct me if I'm wrong on this...
Anyway, I'm not really concerned with water, but if I was, I would probably go with reverse osmosis bottled water as I understand that it is the purest water out there....
Either way you are probably fine, but if this beer does indeed come out tasting off, a tap filter should be one of the avenues of investigation for you, IMHO
Agreed.