State guide
New Mexico
New Mexico’s Drinking Water Bureau is implementing the federal Lead and Copper Rule revisions through statewide inventory and replacement-plan requirements. Ownership is not standardized statewide: NMED recognizes both split and single ownership, while major city systems commonly place utility responsibility on the main-to-meter side and homeowner responsibility on the meter-to-building side.
Checked against official sources on October 4, 2026. Rules and links change; confirm with the office listed before you act.
- Who usually owns the water service line
- Ownership is not uniform statewide; NMED recognizes both single and split ownership, but large municipal systems commonly place utility responsibility from the main to the meter and homeowner responsibility from the meter to the building.
- State drinking water program
- New Mexico Environment Department, Drinking Water Bureau
- State lead service line page
- Official page →
- Permits for repair or replacement
- Local permits may be required; Albuquerque lists installation or alteration of house water service outside the structure as a plumbing/mechanical permit item.
- Assistance programs
- NMED says IIJA and DWSRF lead-service-line funds are available through the Drinking Water State Revolving Loan Fund, and Las Cruces says it is exploring customer financial assistance for private-side replacements.
Official resources in New Mexico
State lead-and-copper rule page with inventory, replacement-plan, and compliance information.
State page explaining customer-notification and public-access requirements for lead service line inventories.
State page describing replacement-plan contents and expectations for full replacements.
Official Albuquerque utility notice showing ownership split and customer guidance on service-line material.
Official Las Cruces lead page with ownership split, inventory map, notices, and current replacement-planning status.
Key facts for New Mexico
- NMED required community and NTNC systems to submit initial lead service line inventories by October 16, 2024.
- NMED says inventories must identify service-line materials regardless of ownership status.
- NMED recognizes both single-ownership and split-ownership service lines in replacement-plan submittals.
- Albuquerque Water Authority says it owns the service line from the water main to the meter; the customer owns from the back side of the meter to the building.
- Santa Fe ordinance says the City owns and maintains the complete water system up to the point of delivery, including meter setting and meter.
- Las Cruces says the city-owned side runs from the street to the meter, and the customer-owned side runs from the meter box to the home.
Utility water service line rules in New Mexico
| Utility | city | phone | Details |
|---|---|---|---|
| Drinking Water Bureau Santa Fe | Santa Fe | 505-476-8620 | State drinking-water program contact for LCRR inventories, replacement plans, and lead-service-line questions. |
| Drinking Water Bureau Santa Fe | Santa Fe | 877-654-8720 | Toll-free Drinking Water Bureau contact listed on NMED lead-service-line pages. |
| Albuquerque Bernalillo County Water Utility Authority Bernalillo | Albuquerque | Not published* | Utility contact shown on the official lead-safe flyer for service-line material questions. |
| City of Albuquerque Building Safety Division Bernalillo | Albuquerque | 505-924-3320 | City permit office for plumbing/mechanical permits, including house water service outside the structure. |
| City of Santa Fe Utility Customer Service Santa Fe | Santa Fe | 505-955-4333 | Customer-service contact on the water service page for leaks, service, and utility account questions. |
| Las Cruces Utilities Customer Service Doña Ana | Las Cruces | 575-541-2111 | Contact listed on the lead and copper page for customers needing help after reviewing the inventory map. |
| Las Cruces Utilities Regulatory Compliance Doña Ana | Las Cruces | 575-528-3704 | Direct contact on the lead and copper page for service-line inventory and notification questions. |
* Not published: the official page doesn't list it. Call the office to confirm before you rely on it.
What to do next
- Look up your utility’s inventory first and keep any notice letters; New Mexico systems must notify customers served by lead, galvanized-requiring-replacement, or unknown lines.
- If you are in Albuquerque, Santa Fe, or Las Cruces, confirm whether your line is split at the meter before pricing private-side work.
- Check local permit rules before excavation; in Albuquerque, work on house water service outside the structure is listed as a plumbing/mechanical permit item.
Not seeing your utility or county?
We list a utility only when an official government page publishes its rules. If yours isn't in the table above, it may not publish them online yet. Here's what to use instead, in order:
- General Start with the statewide information above. It applies across New Mexico, but cities and counties can add their own steps, fees or deadlines.
- Closest verified Nearest places where we have verified local data outside this state (distance from New Mexico's population center, for comparison only):
- Colorado Springs Utilities, Colorado · about 308 miles
- Tucson Water Quality / Pressure Concerns, Arizona · about 309 miles
- Tucson Water Customer Service & Billing, Arizona · about 309 miles
- Call to confirm Ask the official office. They have the current local rule, fee and form.NMED Drinking Water Bureau LCRR
Website →Phone: (505) 827-2855 (as listed on that page, checked Oct 4, 2026)Not sure who handles it locally? USAGov's free help line, 1-844-872-4681, or the New Mexico page on USA.gov can point you to the right office. - Know the current info? Tell us and include a link to the official page. We check every tip before it goes up.
Helpful guides
- Who is responsible for the water line to your house?
- The curb stop, meter and property line, explained
- Water line leak in your yard: what to do
- Water service line replacement costs
Water line responsibility check →