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4 services · Philadelphia

Drains & sewer in Philadelphia, PA

A single slow sink is usually a local clog a plumber can clear in one visit. Several drains backing up at once, gurgling toilets or water at a basement floor drain point to the main sewer line, which may need cleaning, a camera inspection and sometimes repair.

  • Licensed local plumbers
  • The problem explained before work starts
  • Price agreed before the job begins
Plumber working on the drain pipes under a sink

Drains & sewer services in Philadelphia

Local conditions

Drains & sewer in Philadelphia: what's different

Philadelphia property owners are responsible for their sewer laterals, and repairs often involve the street. Older combined sewers can back up into rowhouse basements during heavy rain, even with the Water Department's Green City, Clean Waters stormwater program.

Some older rowhouses share sewer lines with neighbors, which complicates repairs and requires coordination between owners. Permits come from the Department of Licenses and Inspections.

Water and sewer in Philadelphia
The Philadelphia Water Department (PWD) provides water, sewer and stormwater service.
Permits in Philadelphia
Plumbing permits are issued by the Department of Licenses and Inspections (L&I).

Philadelphia housing and plumbing

Brick rowhouses from the late 1800s and early 1900s dominate, typically with basements, cast-iron drains and older service lines.

Other Philadelphia conditions that affect plumbing

  • Homeowner-owned laterals: Philadelphia property owners are responsible for their water and sewer service lines, and repairs often involve the street.
  • Basement backups: Older combined sewers can back up into basements during heavy rain.
  • Frozen pipes: Cold snaps freeze pipes in rowhouse basements and exterior walls.
  • Rowhouse shared lines: Some older rowhouses share sewer or water lines with neighbors, which complicates repairs and requires coordination between owners.

Neighborhoods and ZIP codes

Plumbers on Thawline cover Philadelphia and Philadelphia County, including Fishtown, South Philadelphia, Germantown, Manayunk, Fairmount, Northeast Philadelphia. ZIP codes: 19019 · 19092 · 19093 · 19099 · 19101 · 19102.

When to call a plumber in Philadelphia

  • Water backing up in the tub or shower when a toilet flushes
  • Several fixtures draining slowly at the same time
  • Water or sewage at a basement floor drain
  • Gurgling from drains or toilets
  • Sewer smell inside or a soggy patch in the yard
  • The same clog returning within weeks of being cleared

How these problems start and how to choose between repair options is covered in the drains & sewer guide.

Drains & sewer questions in Philadelphia

What if my Philadelphia rowhouse shares a sewer line?

Repairs may need agreement and cost-sharing with the neighbors on the shared section. A camera inspection shows where the shared line runs and where the problem is.

Are chemical drain cleaners safe to use?

They can damage older pipes and fixtures, and they make the job hazardous for the plumber if they don't work. A plunger or a drain snake is safer for a single slow drain.

More plumbing in Philadelphia

Need help with drains & sewer in Philadelphia?

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