Sewer Line Repair & Hookups · Merrick · ZIP 11520, 11566

Sewer Line Repair in Merrick, NYLaterals to the Cedar Creek System

All Island Plumbing NY repairs and replaces house sewer lines in Merrick (ZIP 11566, parts of 11520), Town of Hempstead, from the foundation to the county connection. Call (516) 360-9493. We answer calls 24/7 and are open Monday through Saturday (closed Sunday).

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Merrick's sewage goes to the county's Cedar Creek plant in Wantagh, and in the south of the hamlet the line from each house runs through low, filled ground. See our Merrick page and the general sewer line repair page.

Where it goes

The state's NY Rising plan says the Cedar Creek Water Pollution Control Plant in neighboring Wantagh receives and treats Merrick's wastewater. The Long Island Commission for Aquifer Protection's 2020 report describes Cedar Creek as the county's plant for eastern Nassau: placed in operation in 1974, it collects from about 105 square miles and serves an estimated 600,000 people, with 15 county pump stations feeding it. According to the plan, two county sewage pump stations sit inside the hamlets' high-risk flood zones.

What's yours

The county owns the main in the street. The lateral from your foundation to that main is the owner's. The Census Bureau's latest survey counts 53% of Merrick homes built in the 1950s and 1960s and 20% before 1940, so most laterals are clay or cast iron, 55 to 85 years old. Typical failures:

Settling in filled ground. The plan notes that many homes were built on filled marsh. Pipe there can sink unevenly, leaving a sag that holds solids.
Roots at clay joints, which return after every cleaning.
Cracks and offsets under driveways, walks and patios.
Thinned cast iron along the bottom of the pipe.

We clear the line, check what comes back, and repair the failed section or replace the run if the pipe is bad in several places.

Backwater valves for surge streets

Our overlay of FEMA's flood map puts about 49% of the Merrick CDP in the high-risk flood zone. During Sandy, the NY Rising plan says, flooded pump stations lost power and sewage backed up from the district system into private homes. A backwater (sewer check) valve on the house sewer closes when the street sewer pushes back, so sewage can't come up through basement floor drains. It needs an accessible cleanout and an occasional check. We install them on houses where the layout allows. The plan's separate project for tidal check valves on storm-drain outfalls protects streets, not your house sewer.

Permits and who to call

Merrick is an unincorporated hamlet, so plumbing permits go through the Town of Hempstead. For a problem in the county main, call Nassau County Public Works' 24-hour sewer line, (516) 571-6900, or the SUEZ hotline for sewer issues, 866-224-8508.

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Sewer line repair in nearby towns

Sewer line repair in Bellmore Sewer line repair in Freeport Sewer line repair in Wantagh All Nassau County areas

Questions

Sewer line repair in Merrick: FAQ

Will the town's tidal check valves stop sewage coming into my house?

No. Those go on storm-drain outfalls to keep tide water off streets. A backwater valve on your own house sewer is what keeps street-sewer backups out.

Our lateral keeps clogging at the same spot. Why?

Often a sag where the pipe settled in filled ground, or a root-prone joint. A repair at that spot usually ends it.

Who fixes the sewer under the street?

The county. Call its 24-hour line if several houses are backed up.

Sources:NY Rising Community Reconstruction Plan, Bellmore/Merrick (March 2014; Cedar Creek WPCP, pump stations in high-risk zones, filled marshland, pump-station failures during Sandy, tidal check valves on outfalls); Long Island Commission for Aquifer Protection, "Wastewater Management in Nassau and Suffolk Counties" (2020; Cedar Creek WPCP 1974, service area, population, pump stations); U.S. Census Bureau, ACS 2024 5-year (B25034); FEMA National Flood Hazard Layer overlaid on the Census 2020 Merrick CDP boundary (Atlas, Oct. 30, 2026); Town of Hempstead Building Department page; Nassau County Department of Public Works, Telephone/Fax Info page (24-hour sewer service, SUEZ hotline).