Sewer Backup: What to Do First

Step 1: Stop adding water

Tell everyone in the house not to flush, shower, run the dishwasher, or start laundry. If the backup is coming from a blocked main line, every fixture you use sends more wastewater to the lowest drain. If a washing machine is mid-cycle, pause it.

Step 2: Keep people and pets out

Close off the affected area. If you must enter, wear rubber boots, waterproof gloves, and eye protection, and wash thoroughly afterward. Anything porous the water touched (carpet, cardboard, upholstered furniture, drywall) will likely need to be discarded or professionally remediated.

Step 3: Identify what kind of backup it is

Step 4: Document before you clean

Photograph and video the water level, affected belongings, and any visible source. Keep receipts for emergency purchases. Even if you are unsure whether insurance applies, documentation costs nothing and protects you later. Many standard homeowners policies exclude sewer backup unless a specific endorsement was added; check your policy or ask your agent.

Step 5: Get the line cleared

Cleanup is pointless while the blockage remains, because the next use of water will refill the area. A provider will typically access the line through a cleanout and clear it with a cable machine or hydro jetting. Ask them to identify what caused the blockage; if they pull roots or pipe fragments, a camera inspection is a reasonable follow-up.

NJ Drain Connect can help you request a connection with an independent provider in Union County. We do not perform the work ourselves and cannot guarantee availability or response time; if you have an active emergency involving electricity, gas, or flooding that threatens safety, contact emergency services first.

Step 6: Clean and disinfect

• Remove standing water with a wet vacuum or pump, disposing of it into a working sanitary drain, not a storm drain.
• Discard porous materials that absorbed sewage. Hard surfaces can be washed with detergent, then disinfected.
• Dry the space thoroughly with fans and dehumidifiers; mold can begin within a day or two.
• For large areas or finished basements, a professional remediation company may be appropriate.

Step 7: Reduce the chance it happens again

• Ask the provider whether a backwater valve is appropriate for your home. It can help prevent municipal surcharge from entering the house, though it requires maintenance and is not suitable everywhere.
• If roots were the cause, discuss maintenance intervals or repair options.
• Keep grease, wipes, and paper towels out of drains.
• Know where your cleanout is and keep it accessible.

Local note for Union County

Responsibility for the lateral versus the public main is set by each municipality. If the provider believes the blockage is in the street, contact your town. For Linden-specific guidance, see our Linden drain and sewer page.