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Water system · PWSID MD0100023

TOWN OF THURMONT

THURMONT, MD · ~6,200 people served

Check your exact address → THURMONT overview
34
Action needed
PurityRadar safety score

PWSID

MD0100023

State

Maryland

City

THURMONT

Population served

6,200

Primary source

GU

Score history

▼ 66 points — the score moved from 100 to 34 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 34

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

PFOA

Perfluorooctanoic acid

12 ppt

limit 4 ppt

Above EPA limit · 3.0×

PFOS

Perfluorooctanesulfonic acid

11 ppt

limit 4 ppt

Above EPA limit · 2.8×

PFHxS

Perfluorohexanesulfonic acid

4.7 ppt

limit 10 ppt

Below EPA limit

PFBS

3 ppt

limit —

No federal limit

Violations & enforcement

39

Violations on record

0

Unaddressed

3

Health-based

33

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2011. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jul 2010 Resolved
Monitoring & reporting · Nitrate began Jan 2010 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 2009 Resolved
Treatment technique · Lead & Copper Rule health-based began Nov 2008 Resolved
Monitoring & reporting · Fluoride began Jan 2008 Resolved
Other · EPA contaminant 7000 began Jul 2007 Resolved
Monitoring & reporting · Nitrate began Jan 2006 Resolved
Monitoring & reporting · EPA contaminant 2964 began Jan 2002 Resolved
Monitoring & reporting · EPA contaminant 2955 began Jan 2002 Resolved
Monitoring & reporting · EPA contaminant 2979 began Jan 2002 Resolved
Monitoring & reporting · EPA contaminant 2977 began Jan 2002 Resolved
Monitoring & reporting · EPA contaminant 2976 began Jan 2002 Resolved

Recent enforcement actions

  • State action · SOX Feb 2011
  • State action · SOX Feb 2011
  • State action · SIE Jan 2011
  • State action · SIE Jan 2011
  • State action · SIA Jan 2011
  • State action · SIA Jan 2011
  • State action · SOX Jul 2010
  • State action · SIA Mar 2010

This profile is built from EPA public records for system MD0100023 — 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.