LeadPipeLookup

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Lead service lines in Nampa, ID

77 water utilities serve Nampa, with approximately 112,892 people served.

Last verified from EPA SDWIS + utility inventories: 2026-04-14
Known lead
0
Galvanized
0
Unknown
0
% unknown
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Lead Service Lines in Nampa, ID

What you need to know

Nampa serves about 112,892 people through 77 water systems. The good news: there are no confirmed lead service lines in the city's inventory data.

That said, "not yet inventoried" is different from "lead-free." Idaho water systems are still in the early stages of mapping their underground pipes. If your home was built before 1986—especially between the 1950s and 1970s—there's a higher chance you have a lead service line connecting your house to the main water pipe. Lead was common in older construction.

What is a lead service line?

A lead service line is the underground pipe that carries water from the city's main into your home. If water sits in that pipe overnight or longer, lead can leach into your drinking water. The water itself isn't "contaminated"—but the pipe is the source.

Most homes have either copper, plastic, or galvanized steel service lines. Lead was phased out in 1986, but older homes may still have them.

How to find out if you have one

Call Nampa City of (the largest water system serving 100,200 residents, PWSID: ID3140080) or your specific water utility and ask: "Do you have records on my service line material?" They may have old construction records, or they can send someone to look at the pipe where it enters your home (usually in the basement or crawl space). It's often visible and metal, about the width of a pencil to a thumb.

If it's dull gray, soft enough to scratch with a coin, or magnetic, it may be lead. Copper is shiny and reddish-brown. Plastic is, well, plastic.

What to do if you have a lead service line

Boiling doesn't remove lead. A certified water filter (NSF/ANSI 53 rated) can reduce it. The EPA and CDC both recommend flushing your tap before drinking if water has sat unused for 6+ hours—run the cold water for 30 seconds to 2 minutes first.

If health concerns arise—especially for young children or pregnant people—contact your pediatrician or the CDC's lead hotline.

Next steps for residents

  • Contact your water utility (Nampa City of or your smaller provider) and ask for your service line material.
  • If you can't reach them, visit the EPA's Safe Drinking Water Hotline.
  • Consider a certified water filter if you have a lead line or unknown material.
  • If you're renting, ask your landlord for service line records.

Utilities serving Nampa

Common questions

Does Nampa have lead in the water?

Nampa's inventory shows zero confirmed lead service lines so far. However, many older homes may have lead lines that haven't been fully cataloged yet. The only way to know for sure is to ask your water utility about your specific service line material.

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

Call your water utility and ask for records, or look at the pipe entering your home in the basement—it's usually visible. Lead pipes are dull gray, soft enough to scratch, and magnetic. Copper is shiny and reddish; plastic is plastic.

Is lead in water dangerous?

Lead can cause serious health problems, especially in young children and pregnant people. For health concerns, contact your pediatrician or the CDC. You can reduce lead in drinking water by flushing the tap before use and using a certified water filter.

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

Use a certified water filter rated NSF/ANSI 53, flush your tap before drinking after 6+ hours of non-use, and avoid hot tap water for cooking or drinking. Contact your water utility about replacement programs—many cities offer help with removal costs.