HIDDEN VALLEY

GAITHERSBURG, MD · ~125 people served

Check your exact address → GAITHERSBURG overview

100

Excellent

PurityRadar safety score

PWSID

MI0040208

State

Maryland

City

GAITHERSBURG

Population served

125

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 Dec 2020. Official EPA record →

Other · EPA contaminant 7000 began Jul 2020 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 2014 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jul 2014 Resolved

Monitoring & reporting · Total coliform began Aug 2005 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 2000 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 1997 Resolved

Recent enforcement actions

State action · SOX Dec 2020
State action · SIA Dec 2020
State action · SOX Sep 2014
State action · SIF Aug 2014
State action · SIE Aug 2014
State action · SIA Aug 2014
State action · SIF Sep 2005
State action · SIA Sep 2005

This profile is built from EPA public records for system MI0040208 — 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.