GREELEY CITY OF

GREELEY, CO · ~132,310 people served

Check your exact address → GREELEY overview

100

Excellent

PurityRadar safety score

PWSID

CO0162321

State

Colorado

City

GREELEY

Population served

132,310

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

Lithium

17,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2024. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2024 Resolved

Monitoring & reporting · EPA contaminant 1009 began Jun 2023 Resolved

Monitoring & reporting · EPA contaminant 1008 began May 2021 Resolved

Monitoring & reporting · EPA contaminant 1009 began May 2021 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 2020 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jul 2013 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jul 2013 Resolved

Monitoring & reporting · EPA contaminant 0300 began Jul 2012 Resolved

Other · EPA contaminant 7000 began Jul 2006 Resolved

Monitoring & reporting · EPA contaminant 1008 began Jun 2004 Resolved

Monitoring & reporting · EPA contaminant 1009 began Apr 2004 Resolved

Monitoring & reporting · EPA contaminant 1009 began Dec 2002 Resolved

Recent enforcement actions

State action · SOX Oct 2024
State action · SIA Oct 2024
State action · SIE Oct 2024
State action · SIA Aug 2023
State action · SIE Aug 2023
State action · SOX Jul 2023
State action · SIA Mar 2022
State action · SIE Mar 2022

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

5 stations · latest Dec 2024

6.13 · max 52.3 mg/L · 298

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 CO0162321 — 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.