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Water system · PWSID CO0118040

PARKER WSD

PARKER, CO · ~75,949 people served

Check your exact address → PARKER overview
87
Excellent
PurityRadar safety score

PWSID

CO0118040

State

Colorado

City

PARKER

Population served

75,949

Primary source

Surface water

Score history

▼ 13 points — the score moved from 100 to 87 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 87

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

PFOA

Perfluorooctanoic acid

4.8 ppt

limit 4 ppt

Above EPA limit · 1.2×

Lithium

23,900 ppt

limit —

No federal limit

PFPeA

12 ppt

limit —

No federal limit

PFHxA

8.9 ppt

limit —

No federal limit

PFBA

7.6 ppt

limit —

No federal limit

PFBS

3.1 ppt

limit —

No federal limit

Violations & enforcement

72

Violations on record

0

Unaddressed

3

Health-based

37

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2025. Official EPA record →

Reporting · EPA contaminant 5200 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 1009 began Jul 2024 Resolved
Monitoring & reporting · EPA contaminant 3014 began Feb 2024 Resolved
Monitoring & reporting · EPA contaminant 0200 began Sep 2023 Resolved
Other · EPA contaminant 7000 began Jul 2022 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 2021 Resolved
Monitoring & reporting · EPA contaminant 2015 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2010 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2039 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2033 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2035 began Jan 2005 Resolved
Monitoring & reporting · EPA contaminant 2032 began Jan 2005 Resolved

Recent enforcement actions

  • State action · SOX Nov 2025
  • State action · SIA Aug 2025
  • State action · SIE Aug 2025
  • State action · SOX Aug 2024
  • State action · SIE Aug 2024
  • State action · SIA Aug 2024
  • State action · SIA Mar 2024
  • State action · SIE Mar 2024

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

4 stations · latest Dec 2024

2.56 · max 6.99 mg/L · 105

Arsenic

1 station · latest Aug 2023

1.23 · max 1.3 ug/L · 2

Lead

1 station · latest Aug 2023

0.299 · max 0.512 ug/L · 2

Copper

1 station · latest Aug 2023

2 · max 2 ug/L · 1

Manganese

1 station · latest Aug 2023

47.6 · max 47.6 ug/L · 1

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 CO0118040 — 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.