Public Water Partners

ASHBURN, VA · Loudoun County

LOUDOUN WATER - CENTRAL SYSTEM Water System

Consumer Confidence Report status

LOUDOUN WATER - CENTRAL SYSTEM must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for LOUDOUN WATER - CENTRAL SYSTEM.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Virginia’s official records. Always confirm current status with Virginia before making decisions based on this information.

System facts

System ID (PWSID)
VA6107350
System type
Community Water System
Population served
334,808
Service connections
83,426
Ownership
local government
Water source
surface water (rivers, lakes, or reservoirs)

LOUDOUN WATER - CENTRAL SYSTEM is among the 6 largest community water systems in Virginia, serving 334,808 people from surface water.

As of August 1, 2026, its federal record holds 10 entries between 1984 and 2001, all of which EPA lists as closed. Nothing has been added since 2001.

Of the 10, 8 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves inorganic chemicals, the Total Coliform Rules, and the Lead and Copper Rule.

Violation history

  • Water Quality Parameter M/R

    —

    Lead and Copper Rule

    July 1, 2001 – December 31, 2001

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    December 1, 1993 – December 31, 1993

    Archived

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    February 1, 1993 – February 28, 1993

    Archived

  • Monitoring, Regular

    —

    Fluoride

    December 1, 1984 – November 30, 1987

    Archived

  • Monitoring, Regular

    —

    Nitrate

    December 1, 1984 – November 30, 1987

    Archived

  • Monitoring, Regular

    —

    Barium

    December 1, 1984 – November 30, 1987

    Archived

  • Monitoring, Regular

    —

    Arsenic

    December 1, 1984 – November 30, 1987

    Archived

  • Monitoring, Regular

    —

    Selenium

    December 1, 1984 – November 30, 1987

    Archived

  • Monitoring, Regular

    —

    Cadmium

    December 1, 1984 – November 30, 1987

    Archived

  • Monitoring, Regular

    —

    Chromium

    December 1, 1984 – November 30, 1987

    Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Common questions

Is LOUDOUN WATER - CENTRAL SYSTEM required to publish a Consumer Confidence Report?

Yes. LOUDOUN WATER - CENTRAL SYSTEM is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is LOUDOUN WATER - CENTRAL SYSTEM’s next Consumer Confidence Report due?

LOUDOUN WATER - CENTRAL SYSTEM’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does LOUDOUN WATER - CENTRAL SYSTEM have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for LOUDOUN WATER - CENTRAL SYSTEM.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

COGSWELL, CATHERINE

571-291-7844

ASHBURN, VA 20146