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Lead service lines in Helena, MT

103 water utilities serve Helena, with approximately 51,339 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 Helena, MT

Helena's water systems serve approximately 51,339 residents across 103 different utilities. The largest system—Helena Water System—supplies about 32,091 people in the city proper.

What we know about lead service lines in Helena

Currently, Helena's water utilities have not reported any confirmed lead service lines to state regulators. However, "no reported" does not mean "none exist." Many older homes in Helena may still have lead service lines that haven't been identified or inventoried yet. Lead service lines are most common in homes built before 1950, though they can be found in properties from later decades as well.

Montana does not currently require utilities to complete a full inventory of lead service lines, unlike some other states. This means the absence of reported numbers reflects incomplete data, not necessarily a complete absence of risk.

How to check your home

The most reliable way to know if your home has a lead service line is to contact Helena Water System or your local water utility directly. They can tell you:

  • Whether your property is connected to a lead service line
  • The material of the pipe connecting your home to the main water line
  • What water testing options are available to you

You can also request a plumber inspect the line where it enters your home—lead pipes are soft and will leave a dark mark if scratched with a coin.

Testing your water

If you're concerned about lead exposure, you can have your water tested. Helena Water System or your utility can provide information about testing programs or approved laboratories. Testing is especially important if:

  • Your home was built before 1950
  • You have young children or pregnant household members
  • You notice discolored water or a metallic taste

For health concerns related to lead exposure, consult your pediatrician or contact the CDC.

Next steps for residents

  • Contact your water utility to ask whether your address has a known lead service line or if your line's material is unknown
  • Request a water test if you're concerned about lead levels in your tap water
  • Talk to a plumber if you want a professional assessment of your service line material
  • Check for updates on your utility's lead service line inventory, as these may be expanded over time

Utilities serving Helena

Common questions

Does Helena Montana have lead in the water?

Helena's water systems have not reported any confirmed lead service lines to date. However, complete inventories are still being developed. Lead in water comes primarily from older pipes, not the water source itself. Testing your tap water is the best way to know your actual exposure.

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

Contact Helena Water System or your local water utility with your address—they can tell you if a lead service line is known or suspected. A plumber can also visually inspect the pipe entering your home; lead is soft and will leave a dark mark if scratched with a coin.

Is it safe to drink water from a lead pipe?

Lead can leach into drinking water from older pipes, especially in homes with acidic or soft water. The only way to know your risk is to have your water tested. Boiling does not remove lead; flushing the tap for 30 seconds before use may help reduce exposure.

What should I do if my house has a lead service line?

Have your water tested to determine actual lead levels. Consider replacing the service line if you have young children or pregnant household members. Talk to a plumber about options and costs; some utilities offer assistance programs for lead line replacement.