A large part of the city is served by combined sewers, and heavy rain can back water up into basements. Freeze-thaw winters split pipes in exterior walls and rear additions, and narrow row house layouts mean a plumbing problem in one home can affect the neighbors.

Housing & construction
Brick row houses across most neighborhoods, twins and detached homes in the Northeast and Northwest, and converted multi-unit buildings in older areas.
Plumbing services in Philadelphia

Water Line Repair in Philadelphia
Water Department leak notices
Philadelphia water line repair →
Sewer Line Repair in Philadelphia
Shared trenches and tight frontages
Philadelphia sewer line repair →
Drain Cleaning in Philadelphia
Old cast iron interiors
Philadelphia drain cleaning →
Pipe Repair in Philadelphia
Rear additions and kitchens
Philadelphia pipe repair →Also common in Philadelphia: sump pump repair.
Common plumbing problems in Philadelphia
What makes Philadelphia plumbing different
Owner-responsible service lines and laterals
The homeowner generally owns and maintains the water service line and sewer lateral, including repairs under the sidewalk.
Repair loan program
The Philadelphia Water Department has offered a loan program to help eligible homeowners repair water service lines and sewer laterals; check current terms.
Combined sewers
Much of the city uses combined sewers that can back up into basements during intense storms.
Row house plumbing
Shared walls, narrow basements and century-old cast iron make repairs tighter and more involved.
Seasonal plumbing calendar for Philadelphia
- Winter freeze-thawInsulate pipes in rear additions and exterior walls; keep basements heated.
- Summer stormsKeep basement drains clear and consider a backwater valve.
Plumbing emergency in Philadelphia?
- Close the main water shutoff, or the fixture valve if the problem is in one place.
- Stay away from water near outlets or the electrical panel.
- For sewage backups, stop using all drains.
- If you smell gas, leave and call the gas utility or 911 from outside.
Philadelphia plumbing questions
Who is responsible for my water service line in Philadelphia?
Philadelphia homeowners are generally responsible for the water service line serving their property and the sewer lateral, including repairs.
Does Philadelphia help pay for service line repairs?
The Philadelphia Water Department has offered a loan program for eligible homeowners repairing service lines and sewer laterals. Check current eligibility with PWD.
Why does my Philadelphia basement flood in heavy rain?
Much of the city has combined sewers that can surcharge during storms, pushing water back through basement drains.
Are there lead service lines in Philadelphia?
Some older homes still have lead service lines. The Water Department can help you determine your line’s material.
Nearby service areas
We also serve communities around Philadelphia, including Camden, Cheltenham, Upper Darby, Bensalem, Lower Merion, Cherry Hill.


