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Water system · PWSID CO0134150

DURANGO CITY OF

DURANGO, CO · ~33,787 people served

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

PWSID

CO0134150

State

Colorado

City

DURANGO

Population served

33,787

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

Lithium

12,000 ppt

limit —

No federal limit

Violations & enforcement

20

Violations on record

0

Unaddressed

0

Health-based

26

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2023. Official EPA record →

Monitoring & reporting · EPA contaminant 0200 began May 2023 Resolved
Monitoring & reporting · EPA contaminant 0300 began May 2023 Resolved
Monitoring & reporting · EPA contaminant 3014 began Nov 2016 Resolved
Monitoring & reporting · EPA contaminant 3015 began Nov 2016 Resolved
Monitoring & reporting · EPA contaminant 0100 began Nov 2016 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2015 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2015 Resolved
Monitoring & reporting · EPA contaminant 0200 began Jun 2015 Resolved
Monitoring & reporting · Total coliform began Nov 2005 Resolved
Monitoring & reporting · Total coliform began Jul 2005 Resolved
Monitoring & reporting · Bromate began Jan 2002 Resolved
Monitoring & reporting · EPA contaminant 2005 began Jan 2002 Resolved

Recent enforcement actions

  • State action · SOX Jul 2023
  • State action · SIA Jun 2023
  • State action · SIE Jun 2023
  • State action · SOX Mar 2017
  • State action · SIA Mar 2017
  • State action · SIE Mar 2017
  • State action · SOX May 2016
  • State action · SOX Jan 2016

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

Manganese

12 stations · latest Feb 2026

79.8 · max 2,800 ug/L · 524

Copper

12 stations · latest Oct 2025

1.9 · max 62.3 ug/L · 432

Arsenic

11 stations · latest Feb 2026

0.184 · max 3.3 ug/L · 261

Lead

11 stations · latest Feb 2026

0.26 · max 60.8 ug/L · 230

Nitrate

2 stations · latest Dec 2024

0.23 · max 1.4 mg/L · 51

Fluoride

4 stations · latest Feb 2026

0.18 · max 0.456 mg/L · 49

Uranium

1 station · latest Sep 2021

0.525 · max 1.6 ug/L · 24

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 CO0134150 — 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.