For example: the bill for a household with a 5/8" meter billed semi-annually would be calculated thusly:

Rates for fiscal year 2007 (please note that out of town rates may vary):

For a 5/8" meter, the semi-annual service charge $24.00 For the first 2,300,000 cubic feet of water, the rate is $27.82 per 1,000 cubic feet

Usage is calculated by subtracting the previous reading from the current reading:
Meter reading this month 86100
Meter reading six months ago 83200
Water consumption 2900 cu ft
And the usage charge is: 2.9 x 27.82 = $80.68
Adding the two ($24.00 + $80.68) together, the total semi-annual water bill is $104.68

Total semi-annual Sewer bill for New Britain properties is $1.59 (per 100 cuft) x 29 = 46.11

And the total water and sewer bill is $150.79