Is Watermill Express really meant to be an eco-friendly service?

Everything I read about the Watermill Express describes them as convenient, clean, affordable and eco-friendly -- such a faithful echoing of the company's own site! -- but here's the thing: the only two kiosks I've seen are in areas characterized by dollar stores, pedestrian traffic and assisted housing. I'm not the only one who's noticed! Are franchisees simply seeking out Dallas' cheapest real estate? Or is Watermill Express serving some other need than a wholesome desire for healthy water? I can't figure it out.