New Jersey Lead Service Lines
New Jersey law requires community water systems to inventory service line material and replace lead and galvanized-requiring-replacement lines. Here's what that means for you.
Short answer: Check your utility's published lead service line inventory or notice to see what material is listed for your address. Never assume a line is or isn't lead based on your home's age or neighborhood alone — only a verified inventory record or physical inspection tells you the material.
New Jersey context
Under New Jersey's lead service line law, community water systems must inventory the material of every service line in their system, notify customers whose line is lead or of unknown material, and plan for replacement. This is commonly described as requiring full replacement within a set state timeline — often cited as by 2031, within ten years of the 2021 law — but confirm the current deadline and your utility's specific schedule, since implementation details can change.
Step-by-step
- Find your water system (see Find Your Water System).
- Search for that utility's published lead service line inventory or notice page.
- Look up your address or account, if the utility provides an address-level lookup.
- If your line is listed as lead or unknown, review the utility's replacement program, timeline, and any access or notice requirements.
- After any replacement or disturbance, follow the utility's flushing guidance before drinking or cooking with tap water.
Common mistakes
- Assuming an older home automatically has a lead service line
- Skipping post-replacement flushing steps
- Confusing the service line (utility-to-property connection) with interior premise plumbing
- Doing private service-line work without contacting the utility first
When professional help is appropriate
Contact your utility before any private plumbing work near the service line connection. A licensed plumber can address the interior premise-plumbing side once you know whether the exterior line has been addressed.
Official sources
- NJDEP Lead Exposure Reduction program
- Your water utility's lead service line inventory or notice page
Related
What does an "unknown" service line notice mean?
It means the utility hasn't yet verified the material of that specific line — not that it is confirmed lead. Follow the utility's guidance for next steps, which may include a home-side inspection.
This page provides general educational information and is not regulatory advice. Verify current deadlines and requirements with NJDEP or your utility.
Last reviewed: 2026-07-11. Report a correction.