GreyStone MHP

Minnesota — Community Water System — PWSID: MN1020005

System Information

PWSIDMN1020005
System NameGreyStone MHP
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region05
Serves SchoolNo
WholesalerNo
First ReportedJan 24, 1981
Last ReportedNov 25, 2025

Location & Contact

StateMinnesota
CityWatertown
ZIP Code55388
Address100 Angel Avenue SW
OrganizationGreyStone LLC c/o Sara Griffith
Phone6126180946

Population & Service

Population Served500
Service Connections163

Drinking Water Violations (65)

This water system has 65 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
Jul 1, 2017 Sep 30, 2017 Revised Total Coliform Rule MON No Yes Resolved Sep 30, 2017 Revised Total Coliform Rule
Jul 1, 2017 Sep 30, 2017 Revised Total Coliform Rule MON No Yes Resolved Sep 30, 2017 Revised Total Coliform Rule
Jul 1, 2017 Sep 30, 2017 Revised Total Coliform Rule MON No Yes Resolved Sep 30, 2017 Revised Total Coliform Rule
Jul 1, 2017 Sep 30, 2017 Revised Total Coliform Rule MON No Yes Resolved Sep 30, 2017 Revised Total Coliform Rule
Jul 1, 2017 Sep 30, 2017 Chlorine MR No Yes 4.0 mg/L Resolved Sep 30, 2017 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2017 Sep 30, 2017 Chlorine MR No Yes 4.0 mg/L Resolved Sep 30, 2017 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2017 Sep 30, 2017 Chlorine MR No Yes 4.0 mg/L Resolved Sep 30, 2017 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 Chlorine MR No Yes 4.0 mg/L Resolved Sep 30, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 Coliform (TCR) MR No No 5% of samples Resolved Sep 30, 2014 Total Coliform Rule
Jul 1, 2014 Sep 30, 2014 Coliform (TCR) MR No No 5% of samples Resolved Sep 30, 2014 Total Coliform Rule
Jul 1, 2014 Sep 30, 2014 Coliform (TCR) MR No No 5% of samples Resolved Sep 30, 2014 Total Coliform Rule
Jul 1, 2014 Sep 30, 2014 Chlorine MR No Yes 4.0 mg/L Resolved Sep 30, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 Chlorine MR No Yes 4.0 mg/L Resolved Sep 30, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2012 Lead and Copper Rule MR No No TT Resolved Nov 1, 2012 Lead and Copper Rule
Oct 1, 2012 Dec 31, 2012 Chlorine MR No Yes 4.0 mg/L Resolved Dec 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2012 Dec 31, 2012 Chlorine MR No Yes 4.0 mg/L Resolved Dec 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2012 Dec 31, 2012 Chlorine MR No Yes 4.0 mg/L Resolved Dec 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2012 Dec 31, 2012 Chlorine MR No Yes 4.0 mg/L Resolved Dec 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2012 Lead and Copper Rule MR No No TT Resolved Nov 1, 2012 Lead and Copper Rule
Oct 1, 2012 Lead and Copper Rule MR No No TT Resolved Nov 1, 2012 Lead and Copper Rule
Oct 1, 2012 Lead and Copper Rule MR No No TT Resolved Nov 1, 2012 Lead and Copper Rule
Oct 1, 2012 Lead and Copper Rule MR No No TT Resolved Nov 1, 2012 Lead and Copper Rule
Oct 1, 2012 Lead and Copper Rule MR No No TT Resolved Nov 1, 2012 Lead and Copper Rule
Oct 1, 2012 Lead and Copper Rule MR No No TT Resolved Nov 1, 2012 Lead and Copper Rule
Jul 1, 2012 Sep 30, 2012 Chlorine MR No Yes 4.0 mg/L Resolved Sep 30, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2012 Sep 30, 2012 Chlorine MR No Yes 4.0 mg/L Resolved Sep 30, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2012 Sep 30, 2012 Chlorine MR No Yes 4.0 mg/L Resolved Sep 30, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2012 Sep 30, 2012 Coliform (TCR) MR No No 5% of samples Resolved Sep 30, 2012 Total Coliform Rule
Jul 1, 2012 Sep 30, 2012 Coliform (TCR) MR No No 5% of samples Resolved Sep 30, 2012 Total Coliform Rule
Jul 1, 2012 Sep 30, 2012 Coliform (TCR) MR No No 5% of samples Resolved Sep 30, 2012 Total Coliform Rule
Jul 1, 2012 Sep 30, 2012 Coliform (TCR) MR No No 5% of samples Resolved Sep 30, 2012 Total Coliform Rule
Jul 1, 2010 Sep 30, 2010 Chlorine MR No Yes 4.0 mg/L Resolved Sep 30, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2010 Sep 30, 2010 Chlorine MR No Yes 4.0 mg/L Resolved Sep 30, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2010 Sep 30, 2010 Chlorine MR No Yes 4.0 mg/L Resolved Sep 30, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2010 Sep 30, 2010 Chlorine MR No Yes 4.0 mg/L Resolved Sep 30, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2010 Sep 30, 2010 Coliform (TCR) MR No No 5% of samples Resolved Sep 30, 2010 Total Coliform Rule
Jul 1, 2010 Sep 30, 2010 Coliform (TCR) MR No No 5% of samples Resolved Sep 30, 2010 Total Coliform Rule
Jul 1, 2010 Sep 30, 2010 Coliform (TCR) MR No No 5% of samples Resolved Sep 30, 2010 Total Coliform Rule
Jul 1, 2010 Sep 30, 2010 Coliform (TCR) MR No No 5% of samples Resolved Sep 30, 2010 Total Coliform Rule
Jul 1, 2010 Sep 30, 2010 Coliform (TCR) MR No No 5% of samples Resolved Sep 30, 2010 Total Coliform Rule
Oct 1, 2009 Dec 31, 2009 Coliform (TCR) MR No No 5% of samples Resolved Dec 31, 2009 Total Coliform Rule
Oct 1, 2009 Dec 31, 2009 Coliform (TCR) MR No No 5% of samples Resolved Dec 31, 2009 Total Coliform Rule
Oct 1, 2009 Dec 31, 2009 Coliform (TCR) MR No No 5% of samples Resolved Dec 31, 2009 Total Coliform Rule
Oct 1, 2009 Dec 31, 2009 Coliform (TCR) MR No No 5% of samples Resolved Dec 31, 2009 Total Coliform Rule
Oct 1, 2009 Dec 31, 2009 Chlorine MR No Yes 4.0 mg/L Resolved Dec 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2009 Dec 31, 2009 Chlorine MR No Yes 4.0 mg/L Resolved Dec 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2009 Dec 31, 2009 Chlorine MR No Yes 4.0 mg/L Resolved Dec 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2009 Dec 31, 2009 Chlorine MR No Yes 4.0 mg/L Resolved Dec 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2009 Dec 31, 2009 Chlorine MR No Yes 4.0 mg/L Resolved Dec 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 1996 Lead and Copper Rule MR No No TT Resolved Dec 31, 1999 Lead and Copper Rule

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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