Home/ Directory/ CO/ ALAMOSA CITY OF

Water system · PWSID CO0102100

ALAMOSA CITY OF

ALAMOSA, CO · ~11,271 people served

Check your exact address → ALAMOSA overview
100
Excellent
PurityRadar safety score

PWSID

CO0102100

State

Colorado

City

ALAMOSA

Population served

11,271

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 Nov 2023). Levels in parts per trillion (ppt).

Lithium

13,000 ppt

limit —

No federal limit

Violations & enforcement

219

Violations on record

0

Unaddressed

22

Health-based

88

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2009. Official EPA record →

Monitoring & reporting · Arsenic began Nov 2008 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2008 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2008 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2008 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2008 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2008 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2008 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2008 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2008 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2008 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2008 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2008 Resolved

Recent enforcement actions

  • State action · SOX Dec 2009
  • State action · SOX Dec 2009
  • State action · SOX May 2009
  • State action · SOX Jan 2009
  • State action · SIA Dec 2008
  • State action · SIE Dec 2008
  • State action · SIF Nov 2008
  • State action · SFK Oct 2008

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

2 stations · latest Dec 2024

0.45 · max 60 mg/L · 98

Arsenic

2 stations · latest Feb 2026

1.04 · max 1.94 ug/L · 67

Lead

2 stations · latest Feb 2026

1.58 · max 8.37 ug/L · 63

Manganese

2 stations · latest Feb 2026

101 · max 928 ug/L · 29

Fluoride

1 station · latest Feb 2026

0.119 · max 0.31 mg/L · 28

Copper

1 station · latest Oct 2025

0.542 · max 2.4 ug/L · 5

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system CO0102100 — 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.