First, start by eschewing social engineering. If it costs $2 per hundred cubic feet to supply water, don’t start your tiers .50 below that figure. On the top end, don’t impose punitive rates for using “too much” water — as defined by CMUD. But otherwise, yes, the more you use the more you should pay.
The elephant in the room, however, is allowing the city of Charlotte and Mecklenburg County to get away with sticking CMUD with providing the public infrastructure those entities demand with various subsidized development schemes. At least some of those capital costs should be shouldered by the city and county, not CMUD.
