Without an address I am unsure if you are talking about a new connection or if water exists at a location and just needs turned back on.
If a connection is already at the property and the no outstanding balance is on the property, it can be turned back on at no cost.
If you are talking about a completely new connection, then yes, it is a fair amount. Please refer to the most recent Schedule of Municipal Fees for those numbers as it depends on meter size for water and use type for the sewer.