Baltimore's plumbing problems are shaped by its housing. Blocks of century-old rowhomes in Canton, Hampden, Federal Hill and Highlandtown were built long before modern materials, and the mid-century neighborhoods that followed are now reaching the age where original water services and sewer laterals fail. ProStream Plumbing works throughout Baltimore City on exactly that kind of infrastructure.
We are owner-operated. The licensed Maryland master plumber who quotes your job is the one who performs it, with fifteen-plus years of field experience in this city's specific conditions.
What Fails in Baltimore Homes
Galvanized water service lines installed decades ago corrode from the inside until pressure drops noticeably or pinholes open in the basement. Vitrified clay sewer laterals, jointed every few feet, admit roots from the mature street trees planted directly above them, which produces the chronic backups so many city homeowners assume are normal.
Inside, we find layers of piecemeal repair — mixed materials, undersized branches, and shutoff valves that have not turned in thirty years. Those seized valves are why a manageable leak becomes a flooded basement while a homeowner searches for a way to stop the water.
Water Heater Installation and Repair Across Baltimore City
Rowhome mechanical rooms are usually a narrow rear basement or a converted closet, which limits venting options and makes clearance a real constraint rather than a formality. We measure the space before quoting so the replacement unit actually fits and vents correctly, instead of forcing a standard tank into a space that needs a different configuration.
In neighborhoods with gas service already run to the basement, a tankless conversion is often practical during a broader renovation, freeing up floor space that rowhome basements rarely have to spare. Where a tank still has service life left, we repair rather than push a replacement that is not yet needed.
Sewer Lateral Repair and Replacement in Baltimore, MD
City sewer laterals frequently run beneath alleys, sidewalks and shared rear yards, and many are original clay pipe jointed every few feet — exactly the kind of joint that mature street trees find and grow into. A camera inspection shows whether a backup is a clearable clog or a lateral that has settled and needs replacement.
When replacement is the right call, we plan the alley or sidewalk cut, the permit, and the restoration before excavation starts, because a city block leaves no room to improvise mid-job. Trenchless lining is often the better fit where full excavation would disrupt a shared alley unnecessarily.
Water Main and Service Line Repair in Baltimore, MD
Decades of pressure fluctuation and internal corrosion leave many Baltimore service lines running well under capacity long before a homeowner notices anything beyond weak upstairs pressure. We test at the meter and trace the line's material and condition before recommending a full replacement over a targeted repair.
Lead line replacement remains a real consideration on some of the oldest blocks, and we handle the identification, permitting and coordination that comes with it. On tight urban lots, minimizing the footprint of the excavation matters as much as the pipe going in the ground.
Services We Provide in the City
- Water main and water service line replacement, including lead line replacement.
- Sewer main replacement and sewer camera inspection with locating.
- Drain cleaning, hydro-jetting and main line backup clearing.
- Water heater repair, replacement and tankless installation.
- Sump pump installation and basement waterproofing for city basements.
- General repairs: fixtures, valves, supply lines and pressure problems.
Rowhome Work Requires Rowhome Experience
Excavating a service line on a narrow city lot is not the same job as working a suburban front yard. Access is tight, utilities are congested, permitting is jurisdiction-specific, and the neighbors are three feet away. Sewer laterals frequently cross alleys, sidewalks or shared spaces, which changes both the permitting and the restoration plan.
Planning for those conditions before the first shovel goes in is what keeps the project on schedule and prevents damage that costs more than the plumbing.
Straight Diagnosis, No Upselling
Underground work is expensive enough that homeowners deserve evidence rather than assertions. We camera sewer lines before recommending replacement and show you the footage. We test at the meter before recommending water service work. If a cleaning will hold or a repair will genuinely last, we say so.
Every job is licensed, insured, permitted where required and warranty-backed. Call (443) 949-5878 to talk to the plumber who will actually do the work.