Water Quality in 87544 — Los Alamos, NM
EPA data for LOS ALAMOS MUNICIPAL WATER SYSTEM
Data source: U.S. Environmental Protection Agency (EPA) SDWIS Last verified: March 16, 2026
Your Water System
ZIP code 87544 in Los Alamos, New Mexico is served by LOS ALAMOS MUNICIPAL WATER SYSTEM (EPA ID: NM3500115). This system provides water to approximately 25,000 people from groundwater sources.
There are 3 community water systems serving this area.
Lead & Copper in Your Water
No Lead & Copper Rule sampling data available for systems serving this ZIP code.
Violation Summary
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 1, 2025 | Surface Water Treatment Rule | Monitoring | Unresolved |
| July 1, 2025 | Surface Water Treatment Rule | Monitoring | Unresolved |
| July 1, 2025 | Stage 1 DBP Rule | Monitoring | Unresolved |
| January 1, 2025 | Stage 1 DBP Rule | Monitoring | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Unresolved |
| October 11, 2024 | Contaminant 0700 | Health-based | Resolved |
| October 11, 2024 | Contaminant 0700 | Health-based | Unresolved |
| October 11, 2024 | Contaminant 0700 | Health-based | Unresolved |
| October 11, 2024 | Contaminant 0700 | Health-based | Unresolved |
| October 11, 2024 | Contaminant 0700 | Health-based | Unresolved |
| October 11, 2024 | Contaminant 0700 | Health-based | Unresolved |
| October 11, 2024 | Contaminant 0700 | Health-based | Resolved |
| October 11, 2024 | Contaminant 0700 | Health-based | Unresolved |
| October 1, 2024 | Surface Water Treatment Rule | Monitoring | Unresolved |
| August 16, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| July 16, 2024 | Contaminant 0700 | Monitoring | Resolved |
| July 1, 2024 | Surface Water Treatment Rule | Monitoring | Unresolved |
| July 1, 2024 | Stage 1 DBP Rule | Monitoring | Unresolved |
| March 31, 2024 | Contaminant 0700 | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for water systems serving this ZIP code:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | 16 | No |
| Surface Water Treatment Rule | Treatment Technique | 14 | No |
| Contaminant 0700 | Other | 11 | Yes |
| Lead and Copper Rule | Treatment Technique | 3 | No |
| Stage 2 DBP Rule | Treatment Technique | 2 | Yes |
Need help with your water quality?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| LOS ALAMOS MUNICIPAL WATER SYSTEM | NM3500115 | 25,000 | Groundwater |
| REGINA MDWCA | NM3509523 | 705 | Groundwater |
| CIELO LINDO | NM3573126 | 38 | Groundwater |
What You Can Do
- Request your water system’s Consumer Confidence Report (CCR) — Your utility is required to publish this annually
- Consider a home water test — Independent testing can reveal issues in your specific plumbing
- Install a certified water filter — NSF-certified filters can address specific contaminants
- Contact your water provider — Ask about current treatment and any ongoing remediation
Need help with water testing or filtration?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
Other Water Quality Reports in New Mexico
- 87001 (Algodones)
- 87002 (Belen) — 237 violations
- 87004 (Bernalillo) — 23 violations
- 87005 (Bluewater) — 11 violations
- 87008 (Cedar Crest) — 7 violations
- 87010 (Cerrillos) — 50 violations
- 87012 (Coyote) — 19 violations
- 87013 (Cuba) — 62 violations
- 87015 (Edgewood)
- 87016 (Estancia) — 85 violations
- 87017 (Gallina) — 67 violations
- 87020 (Grants) — 11 violations
- 87021 (Milan) — 11 violations
- 87024 (Jemez Pueblo)
- 87025 (Jemez Springs) — 31 violations
- 87026 (Laguna) — 252 violations
- 87027 (La Jara) — 8 violations
- 87028 (La Joya) — 59 violations
- 87029 (Lindrith)
- 87031 (Los Lunas) — 157 violations
Nearby Water Quality Reports
- 87532 (Espanola) — 14 mi — 22 violations
- 87501 (Santa Fe) — 20 mi — 7 violations
- 87012 (Coyote) — 28 mi — 19 violations
- 87025 (Jemez Springs) — 28 mi — 31 violations
- 87024 (Jemez Pueblo) — 30 mi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for LOS ALAMOS MUNICIPAL WATER SYSTEM (NM3500115) on EPA.gov.
Frequently Asked Questions
Is the tap water in 87544 safe to drink?
Los Alamos’s water system has recorded 10 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
Where does 87544’s water come from?
The primary water source for this area is groundwater. LOS ALAMOS MUNICIPAL WATER SYSTEM serves approximately 25,000 people.
How can I get my water tested?
Contact your local water utility for a free water quality report, or hire a certified lab for independent home water testing. The EPA recommends testing annually if you use a private well.
Does 87544 have lead in the water?
No Lead and Copper Rule sampling data is currently available in EPA records for water systems serving ZIP code 87544. If you are concerned about lead, contact your water utility or have your tap water independently tested.
What is the radon risk in 87544?
Radon zone data is not available for ZIP code 87544. The EPA recommends testing all homes for radon regardless of location, as radon levels can vary significantly even within the same neighborhood.