Anybody else in Denver tune their water for brewing? Denver city water is insanely hard. I'm using a simple two-phase under-sink filter since I live in an apartment, but it doesn't touch the hardness problem. I've also read the city has drastically changed the pH to reduce lead leaching from old pipes.

I'm about to pay for water testing to see what I'm getting out of the tap and measure how much I'll need to adjust, but was curious if anybody else had numbers.