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Public water system record

Loudoun Water - Central System

Serves Ashburn, South Riding, Brambleton and 18 more places, Loudoun County, VA · 334,808 people served

Federal records show no health-based violations and 1 monitoring/reporting issue for Loudoun Water - Central System in the last ten years.

  • VA6107350
  • ASHBURN
  • VA
  • 334,808 served

System profile

Source water Surface water
ZIP 20146
EPA system ID VA6107350

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
1

Key facts

  • Loudoun Water - Central System draws water from 2 surface water intakes (1 of them for emergency, seasonal or other part-time use).
  • Most recent formal enforcement: compliance order (no penalty) by EPA, April 2010.
  • Record on file since 1984, with 2 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 90,054 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

None since October 2016.

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2023 Resolved

Full record since 1984

EPA's records for Loudoun Water - Central System go back to 1984. Before October 19, 2016 they list 2 health-based violations (2 archived by EPA without a recorded fix) and 10 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 0 8
1990s 2 0
2000s 0 2
2020s 0 1

Most recent health-based violation before October 19, 2016: Total Coliform, began December 1993, Archived.

Show all 2 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Dec 1, 1993 Archived
Total Coliform
Contaminant limit exceeded
 Feb 1, 1993 Archived

Enforcement actions

EPA took 1 formal enforcement action against Loudoun Water - Central System in 2010. The most recent was a compliance order (no penalty) in April 2010.

Date By Action Violations covered
Apr 16, 2010 EPA Compliance order (no penalty) 1 violation: Stage 2 Disinfection Byproducts Rule

Where the water comes from

Loudoun Water - Central System draws water from 2 surface water intakes (1 of them for emergency, seasonal or other part-time use). It also buys water from Fairfax County Water Authority. 1 other public water system has an emergency connection to Loudoun Water - Central System.

Buys water from

Annual water quality report

Loudoun Water - Central System must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Virginia.

Certified drinking water labs by state EPA guidance for private wells