[Popman]

Any Keurig type machine with a water reservoir grows mold very quickly in the reservoir and in any of the tubing, nooks or crannies that always holds water.

Really ?

I have a Keurig machine for over three years and NEVER had that problem...we go six months between cleanings with white vinegar...

Isn't most public water system sanitized and cleaned before it flows into your home?

[Dixie Yooper]

Isn't most public water system sanitized and cleaned before it flows into your home?

Most public water systems treat the water with sodium hypochlorite or bleach. This takes most of the impurities out of the water to make it safe by state standards.