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Lead service lines in Iselin, NJ

1 water utility serves Iselin, with approximately 233,376 people served.

Last verified from EPA SDWIS + utility inventories: 2026-04-14
Known lead
1,156
Galvanized
0
Unknown
0
% unknown
—

Lead Service Lines in Iselin, NJ

What you need to know

Iselin is served by one water utility: Middlesex Water Company, which provides water to about 233,376 residents. According to the utility's most recent lead service line inventory, 1,156 lead service lines have been confirmed in the system.

A lead service line is the pipe that connects your home's water meter to the main water line under the street. If your line is made of lead, drinking water can pick up lead as it travels through the pipe—especially if water sits unused for hours or if there's corrosion inside the pipe.

Not all homes have lead lines. Many have copper, plastic, or galvanized steel pipes instead. The only way to know for certain is to contact your water utility or have a plumber inspect your line.

What Middlesex Water Company is doing

Utilities in New Jersey are required by state and federal law to inventory all lead service lines and develop a plan to replace them over time. Middlesex Water Company maintains a public record of known lead lines and replacement timelines.

What this means for your home

If your address shows up on the utility's lead line list, the water company is responsible for replacing the portion under the street. You are typically responsible for replacing the portion on your property (from the meter to your home). However, funding and responsibility can vary—check with your utility about your specific situation.

If you don't know whether your line contains lead, you have options:

  • Contact Middlesex Water Company directly to ask if your address is on their lead line list
  • Hire a plumber to visually inspect the line (a small section is usually accessible in the basement or crawlspace)
  • Use a water test kit to check for lead in your tap water (results vary by water age and corrosion, so this isn't a definitive line inspection)

Health considerations

The EPA and CDC recommend that families with young children and pregnant women take precautions if a lead line is confirmed. For specific health guidance, consult your pediatrician or the CDC's resources on lead in drinking water.

Next steps for residents

  • Contact Middlesex Water Company at their customer service line to request your lead service line status
  • If confirmed as lead, ask about the utility's replacement timeline and funding assistance programs
  • In the meantime, run cold water for 30 seconds before drinking or cooking if water has sat unused for several hours
  • Consider a pitcher filter or point-of-use filter certified to remove lead while you investigate further

Utilities serving Iselin

Common questions

How do I know if my house has a lead service line in Iselin?

Contact Middlesex Water Company directly—they maintain records of known lead lines by address. You can also have a plumber inspect the visible portion of your line in the basement or crawlspace, or request a water test from the utility.

Is lead in water dangerous?

Lead can harm brain development in children and affect nervous system health in adults, especially with long-term exposure. Talk to your pediatrician or doctor about specific health concerns, and visit the CDC's lead in water page for guidance.

Who pays to replace a lead service line?

Middlesex Water Company typically pays for the portion under the street; homeowners usually pay for the portion on their property. Costs and assistance programs vary—contact the utility to ask about your specific situation and any available grants.

What should I do right now if I'm worried about lead?

Run cold tap water for 30 seconds before drinking or cooking if water has sat unused for hours, and consider using a pitcher filter certified to remove lead. Request your lead line status from the utility to understand your actual risk.