ST. TAMMANY LANDING

ROCKVILLE, VA · ~90 people served

Check your exact address → ROCKVILLE overview

100

Excellent

PurityRadar safety score

PWSID

VA5117831

State

Virginia

City

ROCKVILLE

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2013. Official EPA record →

Treatment technique · EPA contaminant 0400 health-based began Feb 2012 Resolved

Monitoring & reporting · Total coliform began Jan 2011 Resolved

Monitoring & reporting · Total coliform began Mar 2010 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2007 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jul 2007 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jul 2007 Resolved

Recent enforcement actions

State action · SOX Feb 2013
State action · SIF Dec 2012
State action · SIF Mar 2012
State action · SIE Feb 2012
State action · SFJ Feb 2012
State action · SFJ Oct 2011
State action · SFJ Oct 2011
State action · SIF Jun 2011

This profile is built from EPA public records for system VA5117831 — 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.