PEAKS SHADOW LLC

CALHAN, CO · ~67 people served

Check your exact address → CALHAN overview

100

Excellent

PurityRadar safety score

PWSID

CO0121220

State

Colorado

City

CALHAN

Population served

Primary source

Groundwater

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

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

198

Violations on record

Unaddressed

Health-based

175

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2026. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2025 Resolved

Monitoring & reporting · Nitrate began Jan 2025 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2022 Resolved

Monitoring & reporting · Combined radium-226/228 began Jan 2020 Resolved

Monitoring & reporting · Gross alpha began Jan 2020 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2019 Resolved

Other · EPA contaminant 7000 began Jul 2016 Resolved

Max contaminant level (MCL) · Nitrate health-based began Mar 2016 Resolved

Treatment technique · EPA contaminant 0400 health-based began Jun 2015 Resolved

Monitoring & reporting · EPA contaminant 2964 began Jan 2014 Resolved

Monitoring & reporting · EPA contaminant 2955 began Jan 2014 Resolved

Monitoring & reporting · EPA contaminant 2968 began Jan 2014 Resolved

Recent enforcement actions

State action · SOX Jan 2026
State action · SOX Jan 2026
State action · SIE Jan 2026
State action · SIA Jan 2026
State action · SIE Jan 2026
State action · SIA Jan 2026
State action · SOX Oct 2025
State action · SIA Oct 2025

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

1 station · latest Nov 2020

7.81 · max 7.81 mg/l as N · 2

Fluoride

1 station · latest Nov 2020

0.55 · max 0.55 mg/l · 1

Uranium

1 station · latest Nov 2020

1.05 · max 1.05 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 CO0121220 — 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.