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Lead service lines in Wailuku, HI

21 water utilities serve Wailuku, with approximately 143,145 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 Wailuku, HI

What you need to know

The Wailuku area is served by 21 water systems that collectively provide water to about 143,145 people. Based on available inventory data, no known lead service lines have been identified in these systems.

That said, "no known lead" doesn't automatically mean zero lead pipes exist. It often means utilities either haven't completed a full inventory yet, haven't reported their findings publicly, or the data hasn't been compiled in this database. Lead service lines are most common in older neighborhoods and buildings constructed before 1986, when lead pipes were phased out.

The five largest water systems serving Wailuku

1. Wailuku (PWSID HI0000212): serves about 74,511 people 2. Makawao (PWSID HI0000213): serves about 29,868 people 3. Lahaina (PWSID HI0000214): serves about 20,065 people 4. Upper Kula (PWSID HI0000215): serves about 7,686 people 5. Kaunakakai (PWSID HI0000234): serves about 3,702 people

How to find out about your specific home

Your water utility should have records about the service line material connecting their main line to your house. This is the most direct way to know if lead is present.

Contact your local water system directly—they can tell you:

  • Whether your address is served by a lead, copper, plastic, or galvanized steel line
  • If they've completed an inventory and where to view results
  • What testing or replacement programs they offer

Next steps for residents

  • Contact your water utility by name (see list above) or visit your city/county water department website to request your service line material information
  • If your home was built before 1986, ask your utility about lead testing programs or point-of-use filter options while you investigate further
  • For health concerns, consult your pediatrician or the CDC's guidance on lead and children
  • Check your utility's water quality report (Consumer Confidence Report), published annually and available online

Utilities serving Wailuku

Common questions

Does Wailuku have lead pipes?

Based on available data, no known lead service lines have been reported in Wailuku's water systems. However, inventories may still be incomplete. Contact your local water utility to confirm what material serves your specific address.

Is it safe to drink tap water in Wailuku?

Water systems are required to test and report on lead levels. Check your utility's latest Consumer Confidence Report (published annually) for test results, or contact them directly if you have concerns about your water.

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

Call your water utility with your address—they maintain records of service line materials for each property. You can also request a free or low-cost inspection, and some utilities offer testing or replacement assistance programs.

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

Use a point-of-use filter certified for lead while you explore replacement options, stay informed about your utility's lead reduction programs, and consult your pediatrician if you have health concerns—especially if children live in the home.