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Lead service lines in Nashua, NH

81 water utilities serve Nashua, with approximately 133,003 people served.

Last verified from EPA SDWIS + utility inventories: 2026-04-14
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Lead Service Lines in Nashua, NH

Nashua's water systems serve about 133,000 people across 81 different utilities. The largest—Pennichuck Water Works—serves roughly 89,000 residents in the area.

What we know about lead service lines here

Currently, no confirmed lead service lines have been documented in Nashua's public inventory data. However, this doesn't mean lead pipes aren't present—it often means the inventories are still being completed or updated. Water systems are required by federal law to identify and catalog lead service lines, but the process takes time, especially in older cities where records may be incomplete.

Many homes built before 1986 (when federal regulations began phasing out lead in plumbing) may still have lead service lines connecting the water main to the house. These lines are particularly common in the Northeast.

What you should do if you're concerned

Contact your water utility directly to ask:

  • Do you have a lead service line inventory published online?
  • Has your property been surveyed for lead lines?
  • What is the timeline for completing the inventory?

The largest provider, Pennichuck Water Works, serves most of Nashua. Smaller systems like Litchfield, Londonderry, and others also operate in the area—your utility depends on your address.

If your home was built before the mid-1980s, or if you simply want confirmation, your water utility can often tell you whether your line has been tested. Some utilities offer free or low-cost testing.

Protecting your water in the meantime

Even without a confirmed lead line, you can reduce potential exposure:

  • Let cold water run for 30 seconds before drinking or cooking if the water hasn't been used for several hours
  • Use cold water for cooking and drinking (hot water can leach more lead from pipes)
  • Consider a certified lead-reducing filter if you want extra assurance

If you have young children or are pregnant, talk to your pediatrician or doctor about testing recommendations.

Next steps for residents

  • Contact your water utility to ask about their lead service line inventory status
  • Request information about your specific property's service line material
  • Visit the EPA's guidance on lead in drinking water for additional context
  • If you have health concerns, consult your pediatrician or healthcare provider

Utilities serving Nashua

Common questions

Does Nashua have lead pipes in the water system?

No confirmed lead service lines are currently documented in Nashua's inventory data. However, inventories are still being completed, and homes built before 1986 may have lead lines that haven't yet been surveyed. Contact your water utility to ask about your specific property.

How do I find out if my house has a lead service line?

Contact your water utility directly with your address—they can tell you if your property has been surveyed. Pennichuck Water Works serves most of Nashua; check your bill or search online to confirm your provider.

What should I do if I think I have lead pipes?

Run cold water for 30 seconds before drinking if it hasn't been used in several hours, use cold water for cooking, and consider a certified lead-reducing filter. Your water utility may offer testing or resources.

Is lead in drinking water dangerous?

Lead can affect brain development in young children and cause health problems at any age. Contact your pediatrician or the CDC for health advice; this is a question for a medical professional, not a water utility.