LeadPipeLookup

New York › Water system

MAHOPAC WATER CO

PWSID NY3905707

Serves approximately 1,202 people in New York from groundwater.

Last verified from Utility LCRR inventory: 2026-04-14
Known lead
1
Galvanized
0
Unknown
523
% unknown
27.8%

Lead Service Lines in MAHOPAC WATER CO

What you need to know

Mahopac Water Co serves about 1,200 people in New York. The utility has inventoried 1,878 service lines—the pipes that connect the public water main to homes and buildings.

The numbers:

  • 1 lead service line has been identified
  • 523 lines are unknown (material not yet confirmed)
  • 1,354 lines are non-lead (safer materials like copper or PVC)

This is important because lead pipes can release lead into your drinking water, especially if water is corrosive or hasn't been sitting still for a while.

Why "unknown" lines matter

Over 27% of Mahopac Water Co's inventory is still unconfirmed. Unknown lines may be lead, galvanized steel (which can contain lead), or other materials. The utility should work to identify these—either through inspection, records review, or direct testing—so residents know their actual risk.

What to do if you're concerned

If you have a lead service line:

  • Don't panic. Lead risk depends on water chemistry, age of the line, and usage patterns.
  • Run cold tap water for 30 seconds before drinking or cooking.
  • Never use hot tap water for drinking or baby formula.
  • Contact Mahopac Water Co to ask about replacement assistance.

If your line is unknown or you want to know for sure:

  • Contact Mahopac Water Co directly and ask about your service line material. They may have older records.
  • Request a free or low-cost water test through your local health department.
  • For health concerns, speak with your pediatrician or visit the CDC's lead and health page.

The EPA requires all water utilities to maintain and update lead service line inventories. Replacement timelines vary, but reducing lead exposure starts with knowing what's in your home.

Next steps for residents

  • Contact Mahopac Water Co to ask about your service line material and any replacement programs
  • Request a water test through your county health department if you want to know your home's lead levels
  • Use cold water for drinking and cooking until you confirm your line material
  • Check the utility's inventory updates periodically, since unknown lines may be reclassified as testing progresses

Key figures

Total inventoried lines1,878
BIL/IIJA funding received
Replacement plan statusNot reported
Utility's LCRR inventoryNot provided

Frequently asked

Does Mahopac Water Co have lead service lines?

Yes. The utility has identified 1 confirmed lead service line. However, 523 service lines are still unknown, meaning they have not yet been confirmed as lead-free. Contact the utility to find out what material your specific service line is made of.

Is lead in water dangerous?

Lead can cause serious health effects, especially in children and pregnant people. For health concerns or guidance, talk to your doctor or pediatrician, or visit the CDC's lead exposure page. Reducing contact is important: run cold water before drinking, never use hot tap water for cooking or formula, and consider a water filter certified for lead removal.

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

Contact Mahopac Water Co directly—they have the inventory. If they don't have records for your address, a plumber can inspect the line where it enters your home, or the utility may offer free or low-cost water testing through a local health department.

What should I do if I have a lead service line?

Ask Mahopac Water Co about replacement programs or assistance. In the meantime, run cold water for 30 seconds before drinking, use cold water for cooking and baby formula, and consider a water filter certified for lead removal. A water test can tell you whether lead is actually entering your home.