We have water bottle filling stations at these locations:

Inside the secure area:
Gate 4 across from McAlisters Deli
Gate 9/10

We have water fountains at these locations:

Inside the secure area:
Gate 4 across from McAlisters Deli
Gate 9/10
Outside the secure area:
By Paradies Gift Shop right before you enter TSA
Across from the ticket counters
Beside the Car Rental Counters

The water fountains can be used for filling water bottles of course but there are only two official water bottle filling stations,

Cooper J

#plasticfree @FlyHSV