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Water system · PWSID CO0138045

STERLING CITY OF

STERLING, CO · ~15,100 people served

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

PWSID

CO0138045

State

Colorado

City

STERLING

Population served

15,100

Primary source

GU

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 Aug 2025). Levels in parts per trillion (ppt).

Lithium

12,200 ppt

limit —

No federal limit

Violations & enforcement

72

Violations on record

0

Unaddressed

25

Health-based

147

Enforcement actions

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

Monitoring & reporting · EPA contaminant 0100 began Aug 2023 Resolved
Monitoring & reporting · EPA contaminant 3014 began Aug 2023 Resolved
Monitoring & reporting · EPA contaminant 3015 began Aug 2023 Resolved
Monitoring & reporting · EPA contaminant 0100 began Jul 2023 Resolved
Monitoring & reporting · EPA contaminant 3015 began Jun 2023 Resolved
Monitoring & reporting · EPA contaminant 3015 began May 2023 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2022 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 2022 Resolved
Other · EPA contaminant 7500 began Apr 2021 Resolved
Other · EPA contaminant 7500 began Jan 2021 Resolved
Monitoring · Lead & Copper Rule began Nov 2020 Resolved
Monitoring & reporting · EPA contaminant 0200 began Nov 2020 Resolved

Recent enforcement actions

  • State action · SIA Oct 2023
  • State action · SIE Oct 2023
  • State action · SIE Oct 2023
  • State action · SIA Oct 2023
  • State action · SIA Oct 2023
  • State action · SIE Oct 2023
  • State action · SOX Oct 2023
  • State action · SIA Oct 2023

This profile is built from EPA public records for system CO0138045 — 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.