What is a sewer backup?
A sewer backup is the flow of sewage back up through floor drains, tubs and toilets when the main sewer line is blocked or broken.
A sewer backup is one part of sewer line service: the plumber clears the main line first and runs a camera to find the roots, grease or break that caused it.
What are the 5 signs of a sewer backup?
The 5 signs of a sewer backup are listed below, from the most common to the least common.
- Sewage rises through the basement floor drain.
- Toilets bubble when a washer or sink drains.
- Every drain in the house runs slow.
- Sewer odor fills the basement.
- Water appears around the main cleanout.
Seeing one of these signs? Call a local plumber now.
Call (607) 305-8020How does a plumber clear a sewer backup?
A plumber uses the 5 steps below to clear a sewer backup.
- Opens the main cleanout to relieve the backup.
- Runs a main line auger to break the clog.
- Hydro jets the line when roots or grease remain.
- Runs a camera to find the cause.
- Recommends a repair or a cleaning schedule.
How much does sewer backup service cost in Lancaster, PA?
Sewer backup service in Lancaster, PA costs $100–$800 to clear the main line, according to HomeAdvisor. Night calls cost 1.5 to 3 times the normal hourly rate, and a broken line needs a sewer repair of $600–$1,050 or a replacement of $1,388–$5,323.
Typical prices for 4 sewer backup service jobs are shown in the table below.
| Job | Typical price |
|---|---|
| Main line clog clearing | $100–$800 |
| Cracked sewer pipe repair | $600–$1,050 |
| Sewer line replacement | $1,388–$5,323 |
| Night or weekend service | 1.5 to 3 times the normal hourly rate |
Source: HomeAdvisor national cost data, 2025–2026. Ranges are what most homeowners pay; your plumber gives the price for your job before work starts.
Want a price for your job? Call and describe the problem to a local plumber.
Call (607) 305-8020Does homeowners insurance cover a sewer backup?
It depends on the policy. Standard homeowners policies exclude sewer backup damage unless the owner adds a water backup endorsement, according to the Insurance Information Institute.
Related plumbing problems and next steps
When is a sewer backup cleanup problem an emergency?
A sewer backup cleanup problem is an emergency from the first sign of sewage in the house. Stop all water use, keep people and pets away from the sewage and call for emergency main line clearing. Emergency calls for sewer line problems go to an emergency plumber services in Lancaster.
What services are related to sewer backup service?
The 3 services related to sewer backup service are listed below.
- Sewer line repair is the parent service, and the sewer line repair in Lancaster page covers it in full.
- Septic tank pumping signs, steps and prices are on the septic tank pumping in Lancaster page.
- Basement floor drain backing up has 4 causes, listed in the basement floor drain backing up guide.
Frequently asked questions
Who pays for a sewer backup in Lancaster?
It depends on where the blockage sits. The property owner pays for a blockage in the private sewer lateral, and the city or sewer authority handles a blockage in the public main.