A little background on me... I'm the chief operator (translates roughly to head bottle-washer) at a water treatment plant in downtown Roanoke, Virginia.
A large freshwater flowing spring which the city itself grew up around is the source water I treat here. It's literally called The Crystal Spring because of it's very stable clear nature, producing 4 million gallons a day on average, for centuries that people have lived here. Production here has been above average for the past two years, in spite of dry conditions. Today, we're on track to put out 4.5 million gallons. I've seen only one 5 million gallon day here in all my years, but we may break that record this week, if the whole flippin' city doesn't go under.
Thinking in abstract terms, it kinda' makes me wish we could pipe some of the surplus out west.