Sewer Line Replacement in Rockville, MD

Is my Rockville address served by the City or by WSSC?

Rockville, the Montgomery County seat, is split between two systems. The City of Rockville runs its own water utility for roughly 70 percent of the city, and WSSC Water serves the remaining addresses. The City publishes a Water Service Provider Map, and your utility bill also tells you who serves you. This matters for a sewer job because it decides which emergency line to call and which office handles the plumbing permit. City-water addresses get plumbing permits through the City's Department of Community Planning and Development Services, while WSSC-served addresses go through WSSC Water Permit Services. Ask the plumber to confirm the right office for your sewer work before the job starts.

Who do I call when sewage backs up?

For a problem in the street or one that affects several homes, call the utility. The City of Rockville lists a 24-hour emergency line, 240-314-8567, for sewer backups and water main breaks. WSSC-served addresses use WSSC's Emergency Service Center at 301-206-4002. If only your house is backing up, the trouble is most likely in your private line, and that is plumber work. Repeated backups after clearing are a strong hint that the line needs more than another snaking.

Why would a Rockville line need full replacement?

The median home in Rockville was built in 1980, but that middle figure covers postwar subdivisions such as Twinbrook as well as much newer construction. Older lines can be clay or cast iron that cracks, scales and lets roots in at several joints. Newer plastic lines can still sag, separate or get crushed. When a camera shows damage spread along the run instead of in one spot, replacing the whole line or lining it end to end usually costs less over time than a string of repairs.

A Rockville note

Before any digging, make sure underground utilities are marked, and keep the camera video and route sketch the plumber gives you. If your property is on City water, keep the City's emergency number handy; if it is on WSSC, keep WSSC's. Knowing which one applies saves time on a bad night.