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Lead service lines in Dubuque, IA

33 water utilities serve Dubuque, with approximately 67,239 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 Dubuque, IA

Dubuque's water systems serve about 67,000 people across 33 different utilities. The largest is Dubuque Water Works, which provides water to roughly 59,700 residents.

What we know about lead in Dubuque's water

Currently, there are no confirmed lead service lines reported by any of Dubuque's water systems. This is good news—but "not reported yet" is different from "we've checked everywhere." Most water systems, including the major ones serving Dubuque, have not finished inventorying all their service lines.

The federal Lead and Copper Rule requires water systems to identify lead service lines by specific deadlines. If your water system hasn't completed that work, they may discover lead lines as they conduct inspections over the next few years.

Why this matters

A lead service line is the pipe that carries water from the main water line under the street into your home. If you have one, lead can leach into your drinking water—especially in homes with older plumbing or if water sits in pipes for hours.

You cannot see, smell, or taste lead. The only way to know if it's present is through testing.

How to find out about your specific home

Contact Dubuque Water Works (the main utility) at the number listed on your water bill. Ask:

  • Do you know whether my address has a lead service line?
  • What is your timeline for finishing the service line inventory?
  • Can you test my water for lead?

If you're served by one of the smaller utilities listed above (John Deere Dubuque Works, Hwy 20 Auto/Truck Plaza, Sun Down Ski Resort, or Dubuque Sports Complex), contact that utility directly with the same questions.

Testing your water at home

Even if your water system says there's no lead line, you can request a free or low-cost test. Many water systems offer this. If lead is found, most utilities can help you understand your options, including flushing strategies or filter systems.

For health concerns about lead exposure, especially for children under 6, talk to your pediatrician or contact the CDC's lead information page.

Next steps for residents

  • Check your water bill or your utility's website to confirm which water system serves your address
  • Call your utility and ask about their lead service line inventory status
  • Request a water test if you're concerned about lead at your home
  • If you have young children, discuss lead risks with your pediatrician

Utilities serving Dubuque

Common questions

Does Dubuque have lead in the water?

No lead service lines have been reported so far, but most water systems are still completing their inventories. The best way to know about your home is to contact your water utility and ask if your address has a lead service line.

How do I know if I have a lead service line?

Contact Dubuque Water Works (or your specific utility) and ask them directly about your address. You can also request a water test through your utility. Lead pipes look dull gray and can be scratched to show the metal underneath.

Is lead in drinking water dangerous?

Lead can affect development in young children and cause other health problems. For specific health concerns, talk to your doctor or pediatrician. The CDC has detailed information on lead and health risks.

What should I do if I'm worried about lead in my home?

Request a water test from your utility (often free), ask whether your address has a lead service line, and talk to your pediatrician if you have children. Your utility can suggest filters or other steps if lead is found.