Sometimes you holler till you’re blue in the face. Then, every once in a while, someone listens. OK, so it’s not a "unique idea." (HT: Hayes) But:
According to UNC-Chapel Hill’s School of Government, rate structures are used to encourage conservation in about one in five water systems in the state — including two in the Triangle. Water-rich Cary has relied on tiered water rates since 1999. Its leaders credit the rates with reducing the fast-growing town’s water consumption per person.