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Water system · PWSID CO0139180

CLIFTON WD

CLIFTON, CO · ~34,500 people served

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

PWSID

CO0139180

State

Colorado

City

CLIFTON

Population served

34,500

Primary source

Surface water

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

13,400 ppt

limit —

No federal limit

Violations & enforcement

13

Violations on record

0

Unaddressed

2

Health-based

15

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2018. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jan 2018 Resolved
Treatment technique · EPA contaminant 0300 health-based began Jan 2017 Resolved
Monitoring & reporting · EPA contaminant 0100 began Nov 2016 Resolved
Monitoring & reporting · EPA contaminant 3014 began Nov 2016 Resolved
Monitoring & reporting · EPA contaminant 3015 began Nov 2016 Resolved
Treatment technique · EPA contaminant 0200 health-based began Jul 2012 Resolved
Monitoring & reporting · EPA contaminant 2990 began Jan 1988 Resolved
Monitoring & reporting · EPA contaminant 2984 began Jan 1988 Resolved
Monitoring & reporting · EPA contaminant 2982 began Jan 1988 Resolved
Monitoring & reporting · EPA contaminant 2969 began Jan 1988 Resolved
Monitoring & reporting · EPA contaminant 2980 began Jan 1988 Resolved
Monitoring & reporting · EPA contaminant 2977 began Jan 1988 Resolved

Recent enforcement actions

  • State action · SOX Jan 2018
  • State action · SIE Jan 2018
  • State action · SIA Jan 2018
  • State action · SIF Mar 2017
  • State action · SOX Mar 2017
  • State action · SIE Feb 2017
  • State action · SOX Feb 2017
  • State action · SIA Feb 2017

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

Arsenic

2 stations · latest Mar 2026

0.89 · max 5.48 ug/L · 8

Lead

2 stations · latest Mar 2026

0.315 · max 7.89 ug/L · 6

Copper

2 stations · latest Mar 2026

2.15 · max 2.9 ug/L · 4

Fluoride

2 stations · latest Mar 2026

0.61 · max 0.89 mg/L · 4

Manganese

1 station · latest Mar 2026

474 · max 1,060 ug/L · 3

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 CO0139180 — 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.