I just picked up a Gaggia Classic and I am wondering if my delicious Denver tap water will do the trick or if I should go with something bottled. I am looking [here](http://www.scaa.org/?page=resources&d=water-standards) for the espresso standards and [here](http://www.denverwater.org/docs/assets/5EB822C6-EDF3-C0C9-871E2F58438E152B/2013WaterQualityReport.pdf) for the Denver water report. 

Nearest I can tell, it's pretty close to the sweet spot for total dissolved solids but I don't know how to decipher the other values like pH. 

I plan to descale every now and again so mostly I am just curious if this H2O will cause any serious pain.