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WALNUT GROVE NO 1

Virginia — Community Water System — PWSID: VA4085902

System Information

PWSIDVA4085902
System NameWALNUT GROVE NO 1
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region03
Serves SchoolNo
WholesalerNo
First ReportedFeb 10, 1979
Last ReportedDec 3, 2025

Location & Contact

StateVirginia
CityROCKVILLE
ZIP Code23146
Address2414 GRANITE RIDGE ROAD
OrganizationSCALLAN, DEVON
Phone804-749-8868

Population & Service

Population Served290
Service Connections115

Drinking Water Violations (31)

This water system has 31 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Jan 1, 2009 Dec 31, 2009 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2004 Mar 31, 2004 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 3, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2004 Mar 31, 2004 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 3, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2004 Mar 31, 2004 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 3, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2004 Mar 31, 2004 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 3, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2000 Sep 30, 2000 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2000 Total Coliform Rule
Sep 1, 2000 Sep 30, 2000 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2000 Total Coliform Rule
Sep 1, 2000 Sep 30, 2000 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2000 Total Coliform Rule
Sep 1, 2000 Sep 30, 2000 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2000 Total Coliform Rule
Jul 1, 1999 Jul 31, 1999 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1999 Total Coliform Rule
Jul 1, 1999 Jul 31, 1999 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1999 Total Coliform Rule
Jul 1, 1999 Jul 31, 1999 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 1999 Total Coliform Rule
Jun 1, 1999 Jun 30, 1999 Coliform (TCR) MR No Yes — 5% of samples — Resolved Jun 30, 1999 Total Coliform Rule
Oct 1, 1997 Oct 31, 1997 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Oct 31, 1997 Total Coliform Rule
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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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