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Lead service lines in Louisville, KY

3 water utilities serve Louisville, with approximately 764,970 people served.

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

Louisville's water system serves nearly 765,000 people through three utilities. Right now, there's no confirmed data available on how many lead service lines exist in Louisville—the main utility hasn't yet published an inventory.

What you need to know

Lead service lines are pipes made entirely of lead that connect homes to the water main under the street. Water sitting in these pipes can pick up lead, especially in older homes or after long periods without use. Louisville Water Company serves the vast majority of residents here (about 764,769 people), along with two smaller systems for mobile home parks and treatment facilities.

The inventory status: As of now, Louisville Water Company has not published a public count of lead service lines in its system. This doesn't mean there are no lead lines—it means the utility is still working on documenting them or hasn't made the data available yet.

What this means for your home

If you live in Louisville, you can't rely on a citywide inventory to know your situation. Your home's service line material depends on when it was installed and the specific area you live in. Homes built before the 1980s are more likely to have lead or galvanized (zinc-coated steel) service lines, which can also corrode and release metals into water.

How to find out about your home

Contact Louisville Water Company directly and ask about your service line material. They can often tell you based on your address and construction records. If they can't confirm it, a licensed plumber can dig up a small section of the line where it leaves your home to identify the material.

Testing your water

If you're concerned about lead, you can get your water tested. Many labs in the Louisville area offer this service for $20–50. A test can tell you whether lead is actually reaching your tap, which depends on your pipes, water chemistry, and how long water sits before you use it.

The CDC recommends flush testing—running cold water for 30 seconds before using it for drinking or cooking—as a simple precaution in homes with unknown service line material.

Next steps for residents

  • Contact Louisville Water Company to ask about your service line material (call 502-540-2000 or visit their website).
  • Get your water tested if you want a definitive answer about lead levels in your tap water.
  • Flush your lines each morning: run cold water for 30 seconds before drinking or cooking.
  • Check with a licensed plumber if you want a physical inspection of your service line.

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Utilities serving Louisville

Common questions

Does Louisville have lead service lines?

Louisville Water Company has not yet published a public inventory of lead service lines. This means the data isn't available to the public yet, not that there are no lead lines. Older homes (pre-1980s) are more likely to have them.

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

Call Louisville Water Company at 502-540-2000 and ask about your address. They may have records. A licensed plumber can also inspect the line where it leaves your home to identify the material.

Is lead in Louisville's tap water a problem?

Lead in tap water depends on your service line, your home's plumbing, and water chemistry—not just the city's water supply. Get your water tested to know your actual exposure. You can also flush cold water for 30 seconds each morning as a precaution.

What should I do if I'm worried about lead?

Get your water tested (labs near Louisville charge $20–50), flush your taps before using water for drinking, and ask your water utility about your service line. If you have young children, talk to your pediatrician about lead exposure risks.