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Water system · PWSID VA3001100

CAPTAINS COVE

ROCKVILLE, VA · ~2,380 people served

Check your exact address → ROCKVILLE overview
100
Excellent
PurityRadar safety score

PWSID

VA3001100

State

Virginia

City

ROCKVILLE

Population served

2,380

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

Latest detections from EPA’s UCMR5 monitoring (through Oct 2024). Levels in parts per trillion (ppt).

Lithium

14,000 ppt

limit —

No federal limit

Violations & enforcement

34

Violations on record

0

Unaddressed

32

Health-based

130

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2017. Official EPA record →

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2017 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2015 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2014 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2014 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2014 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2013 Resolved

Recent enforcement actions

  • State action · SOX May 2017
  • State action · SIF Apr 2017
  • State action · SIE Mar 2017
  • State action · SFJ Mar 2017
  • State action · SOX Aug 2016
  • State action · SOX Aug 2016
  • State action · SOX Aug 2016
  • State action · SOX Aug 2016

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 Aug 2023

0.024 · max 0.024 mg/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 VA3001100 — 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.