Quick answer: Most of Suffolk County is not on public sewers, so a backup in a Centereach-area home is often a cesspool or septic issue, not a sewer main. A plumber can clear and camera the line from the house to the system. Pumping and replacing cesspools and septic systems is done by licensed liquid-waste contractors, and in Suffolk a failed cesspool can no longer be replaced with another cesspool.
Signs you need main line, sewer & cesspool backups
- Multiple drains backing up
- Sewage in the lowest drain
- Soggy, smelly ground over the cesspool
- Toilets gurgling when other fixtures drain
What to do right now
- Stop using water
- Keep people and pets away from any sewage
- If you know where your cesspool covers are, tell the pro
- Read our cesspool guide before agreeing to a replacement
Before you hire: 4 checks that take 5 minutes
- License: Suffolk County generally requires a Master Plumber license to run a plumbing business here. Search the County's license lookup by business name or license number (license info). Ask for the license number and confirm the status is active: County licenses renew every two years. How to check a license, step by step.
- Price on the phone: ask for the trip/diagnostic fee and whether pricing is flat-rate or hourly, including after hours.
- Permit: for water heaters, gas work, and sewer or cesspool work, ask who pulls the town/village or County permit.
- Written quote before work, with parts, labor and cleanup listed.
Common questions
Pipe problem or cesspool problem?
A camera inspection of the line tells you. If the pipe is clear and water still won't go, the cesspool or septic system is likely full or failing.
Can I replace a failed cesspool with a new cesspool?
No. Under Suffolk County's Sanitary Code (Article 6) a replacement must be at least a septic tank followed by a leaching structure, with Health Department filing. See our guide.
Are there grants?
Suffolk County and New York State offer grants toward advanced (I/A) systems that replace cesspools and septic systems for eligible homes. See suffolkcountyny.gov/septicgrants.
How often should a cesspool be pumped?
About every 2 to 3 years for a typical home, per New York State and Suffolk County guidance; sooner with more people or a garbage disposal. Needing it twice or more a year is a sign the system is failing. See our pumping guide.
Is a cesspool backup an emergency?
Sewage coming up inside the house is: stop running water and keep people and pets away. Slow drains with no smell or overflow can usually wait for a scheduled visit.
Related guides
- Can I replace my failed cesspool with another cesspool in Suffolk County?
- How often should a cesspool or septic tank be pumped on Long Island?
- How do I check a plumber's license in Suffolk County?
Towns we cover for main line, sewer & cesspool backups
- Centereach
- Selden
- Lake Grove
- Ronkonkoma
- Farmingville
- Coram
- Holbrook
- Port Jefferson Station
- Stony Brook
- Smithtown
We're a referral service, not a plumber. Centereach Plumber Connect doesn't do plumbing work or hold plumbing licenses. When you send a request, we try to match you with one independent local plumber. You decide whether to hire them, with no obligation. We may be paid by the plumbers we refer. Always confirm the plumber's Suffolk County license, insurance and a written price before work starts. Look up a Suffolk County license.