[anotherevan]

I think the rule of thumb regarding water is to not use water you wouldn't enjoy drinking straight. If you drink your water straight from the tap then go ahead and use it for brewing.

I have an under the sink in-line water filter and that's what I use to fill up the kettle.

[plorkyeran]

Yeah, some people have the idea that the coffee will mask the flavor of bad-tasting water, but actually it just produces bad-tasting coffee. "Don't use tap water" is an inaccurate rebuttal to that belief.