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Water system · PWSID CO0121075

CALHAN TOWN OF

CALHAN, CO · ~780 people served

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

PWSID

CO0121075

State

Colorado

City

CALHAN

Population served

780

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

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

22

Violations on record

0

Unaddressed

1

Health-based

64

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2026. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jan 2026 Resolved
Reporting · EPA contaminant 5200 began Jul 2025 Resolved
Monitoring & reporting · Lead & Copper Rule began Apr 2025 Resolved
Monitoring & reporting · EPA contaminant 2039 began Jul 2023 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2023 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2023 Resolved
Other · EPA contaminant 7500 began Mar 2022 Resolved
Treatment technique · EPA contaminant 0400 health-based began Apr 2021 Resolved
Other · EPA contaminant 7500 began Nov 2018 Resolved
Other · Lead & Copper Rule began Oct 2018 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2011 Resolved
Monitoring & reporting · EPA contaminant 2031 began Jul 2011 Resolved

Recent enforcement actions

  • State action · SOX Jan 2026
  • State action · SIE Jan 2026
  • State action · SIA Jan 2026
  • State action · SIA Jul 2025
  • State action · SIE Jul 2025
  • State action · SOX Jul 2025
  • State action · SIA Apr 2025
  • State action · SIE Apr 2025

This profile is built from EPA public records for system CO0121075 — 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.