LOS ALAMOS MUNICIPAL WATER SYSTEM

LOS ALAMOS, NM · ~25,000 people served

Check your exact address → LOS ALAMOS overview

100

Excellent

PurityRadar safety score

PWSID

NM3500115

State

New Mexico

City

LOS ALAMOS

Population served

25,000

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Jul 2023). Levels in parts per trillion (ppt).

Lithium

26,600 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2016. Official EPA record →

Other · EPA contaminant 7500 began Feb 2016 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2014 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2014 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2014 Resolved

Other · EPA contaminant 7000 began Jul 2014 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jul 2014 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jul 2014 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Apr 2014 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Apr 2014 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2014 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2014 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2013 Resolved

Recent enforcement actions

State action · SIF Feb 2016
State action · SOX Feb 2016
State action · SOX Dec 2015
State action · SOX Jun 2015
State action · SIF May 2015
State action · SIA Feb 2015
State action · SIE Feb 2015
State action · SIE Feb 2015

This profile is built from EPA public records for system NM3500115 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.