The sewer main, or lateral, is the buried line carrying everything your household drains out to the public sewer. When it fails, the symptoms are impossible to ignore: repeated backups, sewage odor, and wastewater surfacing in the yard or basement. ProStream Plumbing replaces residential sewer mains across Baltimore City, Baltimore County, Anne Arundel County and Howard County.
Sewer replacement is a specialty, not a sideline. It requires camera diagnosis before any digging, accurate locating, careful excavation around other utilities, correct slope on the new run, and a proper tie-in at the public main. Getting the slope wrong by a small margin creates a line that holds solids and clogs indefinitely.
Why Sewer Laterals Fail in This Region
Baltimore's older neighborhoods sit on vitrified clay sewer laterals installed decades ago, jointed every three to five feet. Every joint is an opportunity for a root to enter or for the pipe to shift out of alignment as the soil moves. Homes built during the mid-century boom sometimes have Orangeburg — tar-impregnated fiber pipe — which deforms into an oval and collapses under load.
Add heavy clay soil that swells and shrinks with the seasons, mature street trees planted right over the lateral run, and street traffic loading in dense rowhome blocks, and you get a predictable pattern: chronic backups first, then a partial collapse, then a full blockage that stops the house.
Our Sewer Main Replacement Process
- Camera inspection to confirm the failure mode and pinpoint the depth and location of the damage.
- Line locating and Miss Utility markouts, plus jurisdictional permitting before excavation.
- Targeted excavation over the failed section or the full run, depending on the pipe's condition.
- Installation of new PVC at correct grade, properly bedded, with clean transitions at both ends.
- New cleanout access installed where none exists, so future maintenance never requires digging.
- Inspection, backfill, compaction and restoration of the disturbed surfaces.
Replacement vs. Repeated Cleanings
Rooter service on a structurally failed line is a subscription, not a solution. If you are calling for a clearing every few months, you are paying for the same job repeatedly while the pipe continues to deteriorate underneath. We give you the camera footage and an honest read: if a cleaning will hold, we say so. If the line is broken, offset or collapsing, we tell you that instead of selling maintenance on a pipe that cannot be saved.
Before
AfterLicensed, Permitted and Warranty-Backed
Sewer work is permitted and inspected for a reason — a bad tie-in or an incorrectly graded run becomes a public health issue. ProStream is owner-operated by a licensed Maryland master plumber with fifteen-plus years of experience, fully licensed and insured, and every replacement is warranty-backed.
If your drains are backing up repeatedly or you smell sewage around the property, call (443) 949-5878 and we will get a camera in the line before recommending anything.