Look at the usage on your bill.
Example Number 1
Water usage is 35 (means 3,500 gallons as you are billed in hundreds)
- 35 - 25 = $24.35
- 10 x .874 = $ 8.74
- Sub-total $33.09 + 7% tax 2 32
- Total $35.41
Example Number 2
Water usage is 87 (means 8,700 gallons as you are billed in hundreds)
- 87 - 25 = $ 24.35
- 62 - 50 = $43.70
- 12 x .784 = $ 9.41
- Sub-total $77.46 + 7% tax 5.43
- Total $66.30