LOUDOUN WATER - CENTRAL SYSTEM

Virginia — Community Water System — PWSID: VA6107350

System Information

PWSID	VA6107350
System Name	LOUDOUN WATER - CENTRAL SYSTEM
System Type	Community Water System
Water Source	Surface Water
Activity Status	Active
Owner Type	Local
EPA Region	03
Serves School	No
Wholesaler	No
First Reported	Feb 10, 1979
Last Reported	Feb 17, 2026

Location & Contact

State	Virginia
City	ASHBURN
ZIP Code	20146
Address	44961 Loudoun Water Way
Organization	COGSWELL, CATHERINE
Phone	571-291-7844

Population & Service

Population Served	334,808
Service Connections	83,426

Drinking Water Violations (43)

This water system has 43 violations recorded in the EPA SDWIS database.

Begin Date	End Date	Category	Health-Based	Major	Measured	Federal MCL	State MCL	Status	Return to Compliance	Rule
Oct 1, 2023	—	MR	No	No	—	TT	—	Resolved	Jun 25, 2024	—
Oct 1, 2023	—	MR	No	No	—	TT	—	Resolved	Jun 25, 2024	—
Oct 1, 2023	—	MR	No	No	—	TT	—	Resolved	Jun 25, 2024	—
Oct 1, 2023	—	MR	No	No	—	TT	—	Resolved	Jun 25, 2024	—
Jan 1, 2009	—	MR	No	No	—	—	—	Resolved	Dec 2, 2011	—
Jan 1, 2009	—	MR	No	No	—	—	—	Resolved	Dec 2, 2011	—
Jul 1, 2001	Dec 31, 2001	MR	No	No	—	TT	—	Resolved	Dec 31, 2001	—
Jul 1, 2001	Dec 31, 2001	MR	No	No	—	TT	—	Resolved	Dec 31, 2001	—
Dec 1, 1993	Dec 31, 1993	MCL	Yes	No	—	5% of samples	—	Archived	Dec 31, 1993	—
Dec 1, 1993	Dec 31, 1993	MCL	Yes	No	—	5% of samples	—	Archived	Dec 31, 1993	—
Dec 1, 1993	Dec 31, 1993	MCL	Yes	No	—	5% of samples	—	Archived	Dec 31, 1993	—
Dec 1, 1993	Dec 31, 1993	MCL	Yes	No	—	5% of samples	—	Archived	Dec 31, 1993	—
Feb 1, 1993	Feb 28, 1993	MCL	Yes	No	—	5% of samples	—	Archived	Feb 28, 1993	—
Feb 1, 1993	Feb 28, 1993	MCL	Yes	No	—	5% of samples	—	Archived	Feb 28, 1993	—
Feb 1, 1993	Feb 28, 1993	MCL	Yes	No	—	5% of samples	—	Archived	Feb 28, 1993	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.005 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.005 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.005 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.1 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.010 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.1 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.1 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	4.0 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	4.0 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	2 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.002 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.05 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.002 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.010 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.05 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.002 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.010 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	0.05 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	10 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	10 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	10 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	2 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	2 mg/L	—	Archived	Nov 30, 1987	—
Dec 1, 1984	Nov 30, 1987	MR	No	Yes	—	4.0 mg/L	—	Archived	Nov 30, 1987	—
—	—	—	No	No	—	—	—	—	—	—
—	—	—	No	No	—	—	—	—	—	—
—	—	—	No	No	—	—	—	—	—	—
—	—	—	No	No	—	—	—	—	—	—

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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