And $100 is lower than it probably will be. It's 65.31 for the 1st 1000 gallons, 96.14 for 2000, 126.96 3000, and 30.83 for each additional 1000. This is combined water and sewer. In that base charge are charges per square foot of impermeable area of the property, and surcharges, plus mins and quarterly charges. 2-3 people will easily use 3k gallons a month. This assume a regular 5/8 residential connection. You could have larger with higher mins, or be in an apt that charges it differently.