CRYSTAL MOUNTAIN RESORT & SPA

THOMPSONVILLE, MI · ~700 people served

Check your exact address → THOMPSONVILLE overview

100

Excellent

PurityRadar safety score

PWSID

MI0001716

State

Michigan

City

THOMPSONVILLE

Population served

700

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

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Reporting · Lead & Copper Rule began Sep 2024 Resolved

Monitoring · Lead & Copper Rule began Jan 2023 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Aug 2022 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Aug 2022 Resolved

Monitoring & reporting · EPA contaminant 2039 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2015 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2050 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2037 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2042 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2035 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2020 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2010 began Oct 2020 Resolved

Recent enforcement actions

State action · SIF Jan 2025
State action · SIA Nov 2024
State action · SIE Nov 2024
State action · SOX Sep 2024
State action · SOX Aug 2023
State action · SIF Jun 2023
State action · SIF Jun 2023
State action · SIE Feb 2023

This profile is built from EPA public records for system MI0001716 — 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.