MILILANI Water System Lead Service Line Inventory

What you need to know

MILILANI serves about 50,500 people in Hawaii. Like all US water systems, it is required by federal law to maintain an inventory of lead service lines (LSLs)—the pipes that connect the water main to individual homes.

Current status: MILILANI has not yet completed or made public a comprehensive lead service line inventory. This doesn't mean there are no lead lines in the system; it means the utility is still in the process of identifying which homes have them.

Why this matters

Lead service lines are the single largest source of lead in drinking water. Even at low levels, lead exposure can affect children's brain development. If your home was built before 1986, there's a higher chance your service line contains lead.

Federal rules now require all water systems to:

• Identify which homes have lead service lines
• Share that information with customers
• Replace lead lines over time (with federal funding available)

MILILANI has not yet published results, so you likely cannot look up your specific address on their website yet.

What to do now

Contact MILILANI directly. Ask:

• "Does my address have a lead service line?"
• "When will your inventory be available to the public?"
• "What programs exist to help replace my service line?"

You can also request a free water test from the utility or a certified lab. Testing tells you whether lead is actually in your water right now—which depends on your pipes, water chemistry, and plumbing.

Temporary steps while you wait

If you're concerned about lead exposure:

• Let cold water run for 30 seconds each morning before using it for drinking or cooking
• Use cold water for drinking and cooking (hot water leaches lead faster)
• Consider a point-of-use filter certified for lead removal (NSF/ANSI Standard 53)

For health questions, contact your pediatrician or the CDC's lead information line.

Next steps for residents

• Contact MILILANI to ask about your home's service line status
• Request a free water test through the utility or a certified lab
• If your water tests positive for lead, discuss next steps with your pediatrician or doctor
• Check back on this page or MILILANI's website periodically for inventory updates

Does my home have a lead service line?

MILILANI's lead service line inventory is not yet publicly available. Contact the utility directly with your address to ask. You can also have your water tested for lead, which is often free through the water system.

Is lead in water dangerous?

Lead in drinking water is a health concern, especially for children. For specific health guidance, contact your pediatrician or the CDC at 1-800-CDC-INFO.

Can I test my water for lead?

Yes. Contact MILILANI to ask about free testing, or hire a certified lab. Testing tells you whether lead is actually in your water right now, which varies by home and plumbing.

When will MILILANI finish its lead service line inventory?

There is no published deadline. Call the utility directly to ask about their timeline and when results will be available to customers.