The property owner is responsible for hiring a licensed plumber to clear any blockages or repair any damage to private laterals.  Tenants should report any problems with sewerage directly to their landlord for correction.  The city will not clear private lines.  A permit must be obtained by a city licensed master plumber for repairing damaged lines.

For problems with common, private lines that serve multiple properties, all property owners served by that line are required to jointly participate in the clearing of the common line.