There is a charge for this service. The cost depends on the length of time needed to clean this line. I have sewage coming into my basement. Call the emergency water and sewer line and they will send a crew out to access the problem. If this is a sewer stoppage in your line and they clean it you will be subject to a charge.
Fees depend on the amount of time spent to free the stoppage.
If it is in the city line there is no charge. Call the water and sewer emergency line and they will shut off the water at the curb. There is no charge for this. Bills are sent out quarterly. Meter must be purchased and installed by the homeowner.