Something else to think about in the water rich east... water system capacity.
I live in a fast growing area in the southeast. We've doubled housing units in the last 30 years. Yet, water usage has only gone up about 50%. Why?
Well, it wasn't always this way. I'm kind of a geek on this, and I've looked at the water supply intake data (publicly available) over time. In 1990, it was about 50 cf (cubic feet per second intake). By the early 2000s, it was about 80 cf. Then we had a bad drought, and it was near 100 cf.
This was not sustainable during a drought, which will happen from time to time, even in water rich areas.
It may have been a blessing in disguise, because it got the city to do some serious soul-searching. After the drought, around 2010, it was about 90 cf. So, like it or not, the city started raising rates significantly. They threw a few bones to us, like paying for new WaterSense toilets. I took that bone as did many others. Our water usage dropped from about 120 gallons per day (GPD) to 90 GPD. I also do much of my garden watering from rain water collection. Staying below 100 GPD keeps me out of the punitive high rate tiers of usage.
The city and its utility footprint (also supplies suburbs) is still growing like mad, yet the aggregate water usage today is about 75 cf.
It makes a difference that they don't have to build a new water filtration plant right away, and there is still room for growth.
Just my $0.02 in a water rich area.
Edit: interesting that the board software would not let me abbreviate "cubic feet second". Must be swear word acronym I'm oblivious to.