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Water system · PWSID CO0126325

GUNNISON CITY OF

GUNNISON, CO · ~9,610 people served

Check your exact address → GUNNISON overview

Excellent

PurityRadar safety score

PWSID

CO0126325

State

Colorado

City

GUNNISON

Population served

9,610

Primary source

Groundwater

Score history

▼ 9 points — the score moved from 100 to 91 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 91

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 Sep 2024). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

4.2 ppt

limit 4 ppt

Above EPA limit · 1.0×

PFHxA

5.1 ppt

limit —

No federal limit

PFBS

3 ppt

limit —

No federal limit

PFPeA

3 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2022. Official EPA record →

Monitoring & reporting · EPA contaminant 2326 began Jan 2021 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2018 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jun 1992 Resolved

Monitoring & reporting · EPA contaminant 2969 began Jan 1989 Resolved

Monitoring & reporting · EPA contaminant 2980 began Jan 1989 Resolved

Monitoring & reporting · EPA contaminant 2977 began Jan 1989 Resolved

Monitoring & reporting · EPA contaminant 2981 began Jan 1989 Resolved

Monitoring & reporting · EPA contaminant 2984 began Jan 1989 Resolved

Monitoring & reporting · EPA contaminant 2990 began Jan 1989 Resolved

Monitoring & reporting · EPA contaminant 2982 began Jan 1989 Resolved

Recent enforcement actions

State action · SOX Aug 2022
State action · SIA Oct 2021
State action · SIE Oct 2021
State action · SIE May 2018
State action · SIA May 2018
State action · SOX Apr 2018
State action · SOX Jan 2007
State action · SFJ Aug 1992

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

Fluoride

3 stations · latest Jul 2023

0.13 · max 0.15 mg/l · 4

Manganese

3 stations · latest Jul 2023

0.25 · max 0.42 ug/l · 4

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 CO0126325 — 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.