HIGHLANDS RANCH WSD

HIGHLANDS RANCH, CO · ~103,444 people served

Check your exact address → HIGHLANDS RANCH overview

100

Excellent

PurityRadar safety score

PWSID

CO0118015

State

Colorado

City

HIGHLANDS RANCH

Population served

103,444

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

Lithium

17,900 ppt

limit —

No federal limit

PFBA

5.6 ppt

limit —

No federal limit

PFPeA

3.9 ppt

limit —

No federal limit

PFHxA

3.5 ppt

limit —

No federal limit

PFBS

3.4 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2021. Official EPA record →

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

Monitoring & reporting · EPA contaminant 3015 began Apr 2017 Resolved

Monitoring & reporting · EPA contaminant 0100 began Apr 2017 Resolved

Monitoring & reporting · EPA contaminant 3014 began Apr 2017 Resolved

Recent enforcement actions

State action · SOX Jul 2021
State action · SIA Feb 2021
State action · SIE Feb 2021
State action · SIE Aug 2017
State action · SIE Aug 2017
State action · SIE Aug 2017
State action · SIA Aug 2017
State action · SOX Aug 2017

This profile is built from EPA public records for system CO0118015 — 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.