Plumbing emergencies are usually about containment first and repair second. Every minute an uncontrolled leak runs, the damage bill grows — drywall, flooring, framing and eventually mold remediation. ProStream Plumbing takes urgent calls across Baltimore City, Baltimore County, Anne Arundel County and Howard County, and the person who answers is a licensed master plumber, not a dispatcher reading a script.
Emergencies We Respond To
- Burst or split supply lines, including winter freeze failures.
- Water main breaks and sudden total loss of water pressure.
- Sewer main backups pushing wastewater into basements and floor drains.
- Water heater tank failures and heavy leaks at the unit.
- Failed sump pumps during storms and rising basement water.
- Broken or stuck shutoff valves that make containing a leak impossible.
First Steps While You Wait
Shut the main water valve if a supply line is leaking. If the emergency is a sewer backup, stop running every fixture in the house — each flush and every load of laundry adds to what has nowhere to go. Keep people away from standing water near outlets or appliances, and cut power to the area at the breaker if it is safe to reach.
Take a few photos before cleanup begins. If you end up filing an insurance claim, documentation of the original condition helps considerably.
Why Emergencies Cluster in Baltimore Homes
The failures we get called out for are rarely random. Original galvanized supply lines in century-old rowhomes finally give way. Clay sewer laterals full of roots choke down until one Sunday dinner overwhelms them. Water heaters installed a decade ago rupture at the tank seam. Sump pumps that have never been serviced quit during the exact storm they were installed for.
That pattern is also the opportunity: most of these are predictable. After the emergency is stabilized, we tell you what the underlying condition is and whether a planned replacement will prevent a repeat.

Stabilize, Diagnose, Repair Properly
Our approach on an urgent call is to stop the damage, diagnose the actual cause, and make a repair that holds — not a temporary patch that fails again next month. Where the correct fix is a larger project, such as water main or sewer main replacement, we make the property safe and usable first and then schedule the permanent work.
If something is leaking, backing up or flooding right now, call (443) 949-5878.

