A backwater valve lets sewage leave your home but blocks it from flowing back in. That matters in Philadelphia, where many neighborhoods share combined sewers.
We install valves in Manayunk, Eastwick and Northeast Philly, where heavy storms can overload city lines.
Signs You Need Protection
Past backups are the clearest warning.
- Water rising from a floor drain.
- Gurgling drains during storms.
- A basement bathroom below street level.
How a Backwater Valve Is Installed
We cut the slab and set the valve in the main sewer line.
- A camera check of the line first.
- A flapper gate that closes under pressure.
- An access box for cleaning.
The Philadelphia Water Department shares programs that help homeowners prevent basement backups.
Keep It Working
A valve needs simple care.
- Open and clean it once a year.
- Keep grease out of drains.
- Test the gate after big storms.
Frequently Asked Questions
Will it stop all flooding? It stops sewer backups, not groundwater leaks.
Is a permit needed? Yes. We handle it.
How long does it take? Most installs take one day.
Protect Your Basement From Sewer Backups
Philadelphia Plumbing Experts installs backwater valves citywide. Explore our plumbing services, learn about pipe repair, or contact our team.