Costs are low but it depends on the amount of water used and the location of the home, if in the county it would be a septic tank . I am not sure what area you are referring to. My email is firstname.lastname@example.org
If you are on a well it is free..minus electricity. That is for homes in the county. In the city you would be looking at 30-60 per month unless you have a pool or water your lawn. West TN has a huge aquifer we get our water from. The water is high quality.