A true thriftaholic never follows the herd, and I refuse to waste money on bottled water. It’s one of the biggest rip-offs around, plus those noxious plastic bottles are an ecological disaster. Dasani – owned by Coca-Cola – is filtered municipal tap water. Pepsi owns Aquafina, which is also municipal water.

I bought a Home Water Test Kit on Ebay for twenty bucks, and we passed with flying colors. I use a filter to improve the flavor and thumb my nose at the corporate giants – just like my hero, Erin Brockovitch!