LeadPipeLookup

New Mexico › City overview

Lead service lines in Los Alamos, NM

3 water utilities serve Los Alamos, with approximately 25,743 people served.

Last verified from EPA SDWIS + utility inventories: 2026-04-14
Known lead
0
Galvanized
0
Unknown
0
% unknown
—

Lead service lines in Los Alamos, NM

Los Alamos has three water systems serving about 25,743 residents. The largest is Los Alamos Municipal Water System, which serves roughly 25,000 people.

What we know about lead service lines here

Your water utility has not reported known lead service lines in their inventory. However, "no reported lead" does not mean zero lead lines exist—it may mean the utility hasn't completed a full inventory yet, or records from decades past are incomplete.

Lead service lines are underground pipes that connect the water main to your home. If your home was built or connected before the 1950s, there's a higher chance your line contains lead. Pipes installed after federal lead bans (1986 for most materials, 2014 for all fixtures) are safer, but older plumbing inside your home can still pose risk.

What your utility should have on file

New Mexico requires water utilities to maintain lead service line inventories. You can ask Los Alamos Municipal Water System, Regina MDWCA, or Cielo Lindo (depending on which serves your address) for:

  • Whether your specific address has a lead or galvanized service line
  • When your line was installed
  • Results of any water testing done at your tap

If they don't have records, ask what their timeline is for completing an inventory.

What you can do now

Even if your utility says your line is safe, lead can leach into water due to corrosion. The safest approach is to have your water tested and take precautions while you investigate.

Testing: Contact your utility for a free or low-cost tap water test, or use a certified lab. Expect results in 1–2 weeks.

Reducing exposure: Run cold water for 30 seconds before drinking or cooking (flushes stagnant water from the line). Use cold water for cooking and drinking—hot water dissolves lead faster. If you have young children or are pregnant, this matters more.

Service line replacement: If your utility confirms a lead line, ask about replacement programs or financial assistance. Some states and utilities offer grants or low-interest loans.

Next steps for residents

  • Contact your water utility to ask about your service line material and inventory status
  • Request a free or low-cost tap water test
  • If you have young children or pregnant household members, follow CDC guidance on reducing lead exposure while you investigate
  • Check if your utility offers lead line replacement assistance or rebates

Utilities serving Los Alamos

Common questions

Is Los Alamos water safe to drink?

Los Alamos utilities report no known lead service lines, but "no reported lead" doesn't guarantee zero lead pipes exist. Have your water tested and follow basic precautions like running cold water for 30 seconds before drinking if your home was built before 1950.

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

Contact Los Alamos Municipal Water System (or your local utility) and ask for your service line material. They may have records or can arrange to check. Your address, not your zip code, determines which utility serves you.

What should I do if my water tests positive for lead?

Contact your utility immediately and ask about service line replacement programs. In the meantime, use cold water for drinking and cooking, run water for 30 seconds before use, and consult your pediatrician or the CDC for guidance on reducing exposure for children.

Does boiling water remove lead?

No. Boiling actually concentrates lead because water evaporates but lead does not. Use a certified lead-reduction filter or switch to bottled water if your tap test shows lead.