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Lead service lines in West Yellowstone, MT

18 water utilities serve West Yellowstone, with approximately 12,373 people served.

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

West Yellowstone serves a population of about 12,373 across 18 water systems. The largest provider, the Town of West Yellowstone, serves roughly 9,899 residents.

What we know about lead in West Yellowstone

Lead service lines—pipes that connect homes to the water main—are a known source of lead contamination in drinking water across the US. The good news: West Yellowstone currently reports zero known lead service lines in its inventory data.

However, "zero known" does not mean "zero present." Utilities are still in the process of mapping their service lines. Older homes (built before 1986) are more likely to have lead connections, since lead pipes were widely used then and weren't banned until that year.

What you should do if you live here

If your home was built before 1986, the safest assumption is that your service line might contain lead, even if your water system hasn't confirmed it yet. You have several options:

Test your water. A simple lab test costs $20–40 and tells you whether lead is actually present in your tap water. Contact the Town of West Yellowstone or your local water provider for information on free or low-cost testing.

Reduce exposure while you investigate. Run cold water for 30 seconds before drinking or cooking. Use cold water only for drinking and cooking—hot water pulls more lead from pipes. If you have young children or are pregnant, ask your pediatrician or OB-GYN about blood lead screening.

Ask your utility about your service line. Contact your water provider and ask whether your address is on the service line inventory. Ask specifically whether your line has been identified or is still unknown. This information should be public.

Consider a filter. NSF-certified filters marked for lead reduction can help while you sort out whether your line needs replacement. They're not a permanent fix, but they're affordable and immediate.

Next steps for residents

  • Contact the Town of West Yellowstone water department to ask about your specific service line
  • Request a free or low-cost water test if you're uncertain
  • If your home was built before 1986, consider testing even if your utility says no lead is known in your area
  • Talk to your doctor if you have young children in the home

Utilities serving West Yellowstone

Common questions

Does West Yellowstone have lead service lines?

West Yellowstone currently reports zero known lead service lines. However, the inventory is still being completed, especially for older homes. Homes built before 1986 are at higher risk since lead pipes were legal then.

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

Contact the Town of West Yellowstone water department with your address. They can check their service line inventory. You can also have your water tested or hire a plumber to inspect the pipe at your meter or foundation.

Is the water safe to drink in West Yellowstone?

West Yellowstone's water meets federal safety standards. However, if your home has a lead service line, lead can leach into your water. The best way to know is to test your water and ask your utility about your specific line.

How much does it cost to replace a lead service line?

Replacement typically costs $3,000–15,000 depending on soil conditions and line depth. Some utilities offer financial assistance or split costs with homeowners. Contact the Town of West Yellowstone to ask about rebates or low-interest loans.