PlainEnviro

Los Alamos Water Quality

New Mexico

Health Violations

According to EPA SDWIS, Los Alamos, New Mexico is served by 3 community water systems covering about 25,743 people. The same extract lists 71 health-based violation records, most recently coded 5200 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.

3
Water Systems
25,743
Population Served
71
Health-Based Violation Records
2
Distinct Contaminant Codes

Drinking water in Los Alamos, New Mexico is delivered through 3 EPA-regulated community water systems serving an estimated 25,743 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.

PlainEnviro's health-based SDWIS extract shows 71 violation records across the 3 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 2 distinct EPA contaminant codes: LEAD AND COPPER RULE REVISIONS, Groundwater Rule. 1 TRI-reporting industrial facility is also located within the city limits.

A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the New Mexico drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.

Community Water Systems

System Name Pop. Served Violations Status
LOS ALAMOS MUNICIPAL WATER SYSTEM 25,000 0 Clean
REGINA MDWCA 705 64 Health
CIELO LINDO 38 7 Health

Does this city have health-based water violations?

These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.

Water system Contaminant Begin Date
CIELO LINDO LEAD AND COPPER RULE REVISIONS 2024-10-17
REGINA MDWCA Groundwater Rule 2024-10-11
REGINA MDWCA Groundwater Rule 2024-10-11
REGINA MDWCA Groundwater Rule 2024-10-11
REGINA MDWCA Groundwater Rule 2024-10-11
REGINA MDWCA Groundwater Rule 2024-10-11
REGINA MDWCA Groundwater Rule 2024-10-11
REGINA MDWCA Groundwater Rule 2024-10-11
REGINA MDWCA Groundwater Rule 2024-10-11
CIELO LINDO Groundwater Rule 2024-03-31
CIELO LINDO Groundwater Rule 2024-03-31
CIELO LINDO Groundwater Rule 2019-04-27
CIELO LINDO Groundwater Rule 2019-04-27
CIELO LINDO Groundwater Rule 2019-04-27
CIELO LINDO Groundwater Rule 2019-04-27
REGINA MDWCA Groundwater Rule 2017-11-29
REGINA MDWCA Groundwater Rule 2017-11-29
REGINA MDWCA Groundwater Rule 2017-11-29
REGINA MDWCA Groundwater Rule 2017-11-29
REGINA MDWCA Groundwater Rule 2017-11-29
REGINA MDWCA Groundwater Rule 2017-11-29
REGINA MDWCA Groundwater Rule 2017-09-03
REGINA MDWCA Groundwater Rule 2017-09-03
REGINA MDWCA Groundwater Rule 2017-09-03
REGINA MDWCA Groundwater Rule 2017-09-03
REGINA MDWCA Groundwater Rule 2017-09-03
REGINA MDWCA Groundwater Rule 2017-09-03
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-04-19
REGINA MDWCA Groundwater Rule 2015-01-22

What are Los Alamos's health-based records for?

Los Alamos's health-based violation records carry 2 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.

Contaminant Records Systems
Groundwater Rule 70 2
Lead and Copper Rule Revisions 1 1

TRI Facilities in Los Alamos

Facility Total Releases
U.S. Department of Energy Los Alamos National Laboratory 82.2K lbs

Frequently Asked Questions

What does EPA SDWIS list for drinking water in Los Alamos, New Mexico? ▼
Los Alamos is listed with 3 EPA-regulated water systems covering approximately 25,743 people. 71 health-based violation records appear in the extract. A past registry row is not a current drinkability verdict; contact the local utility for current status.
How many water violations does Los Alamos have in this EPA extract? ▼
Los Alamos water systems have 71 health-based violation records in PlainEnviro's EPA SDWIS extract. This extract is filtered to EPA health-based records and does not include monitoring or reporting violations.
What contaminants were found in Los Alamos water? ▼
Health-based records for Los Alamos water systems carry the following EPA contaminant codes: LEAD AND COPPER RULE REVISIONS, Groundwater Rule. This source edition does not include authoritative contaminant names. Source: EPA SDWIS.
How many water systems serve Los Alamos? ▼
3 EPA-regulated community water systems serve Los Alamos, New Mexico, collectively covering approximately 25,743 people. Data is from the EPA Safe Drinking Water Information System (SDWIS).
Where does Los Alamos get its drinking water? ▼
Los Alamos's water supply comes from 3 EPA-regulated community water systems. Source type data is not available for all systems. For detailed supply information, contact your local water utility. Source: EPA SDWIS.
Are there pollution sources near Los Alamos? ▼
Yes, 1 EPA Toxic Release Inventory (TRI) facility is registered in Los Alamos, New Mexico, reporting a combined 82.2K lbs of toxic chemical releases. TRI data reflects self-reported emissions; it does not measure exposure or health effects. Source: EPA TRI.

How does Los Alamos compare in New Mexico?

Of the 255 New Mexico places with at least one community water system on file, Los Alamos ranks #49 by number of systems (3).

Either side of it: Holman (3), Isleta (3), Los Ojos (3), Mountainair (3)

About This Data

Figures here are the current EPA SDWIS extract joined to the 3 community water systems whose service area lists Los Alamos, ranked against the 255 New Mexico places with at least one system on file. Data current as of 2026-08-25.

Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.

A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.

TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.

Read our methodology - how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →
Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro