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GUADALAJARA MEXICAN RESTAURANT

South Dakota — Transient Non-Community — PWSID: SD4600568

System Information

PWSIDSD4600568
System NameGUADALAJARA MEXICAN RESTAURANT
System TypeTransient Non-Community
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedMar 4, 1980
Last ReportedDec 9, 2025

Location & Contact

StateSouth Dakota
CitySPEARFISH
ZIP Code57783
Address1221 N MAIN
OrganizationGUADALAJARA MEXICAN RESTAURANT
Phone6056457369

Population & Service

Population Served630
Service Connections1

Drinking Water Violations (77)

This water system has 77 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
Dec 31, 2021 — E. COLI MR No Yes — — — Resolved Mar 14, 2023 Ground Water Rule
Dec 31, 2021 — E. COLI MR No Yes — — — Resolved Mar 14, 2023 Ground Water Rule
Dec 31, 2021 — E. COLI MR No Yes — — — Resolved Mar 14, 2023 Ground Water Rule
Sep 15, 2019 — E. COLI MR No Yes — — — Resolved Feb 10, 2020 Ground Water Rule
Sep 15, 2019 — E. COLI MR No Yes — — — Resolved Feb 10, 2020 Ground Water Rule
Sep 15, 2019 — E. COLI MR No Yes — — — Resolved Feb 10, 2020 Ground Water Rule
Jan 1, 2018 Jan 31, 2018 Revised Total Coliform Rule MON No Yes — — — Resolved Jan 31, 2018 Revised Total Coliform Rule
Jan 1, 2018 Jan 31, 2018 Revised Total Coliform Rule MON No Yes — — — Resolved Jan 31, 2018 Revised Total Coliform Rule
Jan 1, 2018 Jan 31, 2018 Revised Total Coliform Rule MON No Yes — — — Resolved Jan 31, 2018 Revised Total Coliform Rule
Apr 1, 2015 Apr 30, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Apr 30, 2015 Total Coliform Rule
Apr 1, 2015 Apr 30, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Apr 30, 2015 Total Coliform Rule
Apr 1, 2015 Apr 30, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Apr 30, 2015 Total Coliform Rule
Aug 9, 2005 — Public Notice Other No No — — — Resolved Apr 19, 2010 Public Notice Rule and Revised PN Rule
Feb 8, 2005 — Public Notice Other No No — — — Resolved Apr 19, 2010 Public Notice Rule and Revised PN Rule
Jul 1, 2004 Jul 31, 2004 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2004 Total Coliform Rule
Jul 1, 2004 Jul 31, 2004 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2004 Total Coliform Rule
Jul 1, 2004 Jul 31, 2004 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2004 Total Coliform Rule
Jul 1, 2004 Jul 31, 2004 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2004 Total Coliform Rule
Jan 1, 2004 Dec 31, 2004 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2004 Nitrate Rule
Jan 1, 2004 Dec 31, 2004 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2004 Nitrate Rule
Jan 1, 2004 Dec 31, 2004 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2004 Nitrate Rule
Jan 1, 2004 Dec 31, 2004 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2004 Nitrate Rule
Oct 8, 2002 — Public Notice Other No No — — — Resolved Apr 19, 2010 Public Notice Rule and Revised PN Rule
Aug 1, 2002 Aug 31, 2002 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2002 Total Coliform Rule
Aug 1, 2002 Aug 31, 2002 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2002 Total Coliform Rule
Dec 1, 2001 Dec 31, 2001 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2001 Total Coliform Rule
Dec 1, 2001 Dec 31, 2001 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2001 Total Coliform Rule
Jan 1, 2001 Dec 31, 2001 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2001 Nitrate Rule
Jan 1, 2001 Dec 31, 2001 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2001 Nitrate Rule
Jan 1, 2001 Dec 31, 2001 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2001 Nitrate Rule
Aug 13, 2000 Sep 12, 2000 Coliform (TCR) Other No No — 5% of samples — Archived Sep 12, 2000 Total Coliform Rule
Jun 1, 2000 Jun 30, 2000 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2000 Total Coliform Rule
Jun 1, 2000 Jun 30, 2000 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2000 Total Coliform Rule
Jun 1, 2000 Jun 30, 2000 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2000 Total Coliform Rule
Jul 1, 1999 Jul 31, 1999 Coliform (TCR) MR No Yes — 5% of samples — Archived Jul 31, 1999 Total Coliform Rule
Jul 1, 1999 Jul 31, 1999 Coliform (TCR) MR No Yes — 5% of samples — Archived Jul 31, 1999 Total Coliform Rule
May 9, 1998 Jun 8, 1998 Coliform (TCR) Other No No — 5% of samples — Archived Jun 8, 1998 Total Coliform Rule
Mar 1, 1998 Mar 31, 1998 Coliform (TCR) MR No Yes — 5% of samples — Archived Mar 31, 1998 Total Coliform Rule
Mar 1, 1998 Mar 31, 1998 Coliform (TCR) MR No Yes — 5% of samples — Archived Mar 31, 1998 Total Coliform Rule
Jun 1, 1997 Jun 30, 1997 Coliform (TCR) MR No Yes — 5% of samples — Archived Jun 30, 1997 Total Coliform Rule
Jun 1, 1997 Jun 30, 1997 Coliform (TCR) MR No Yes — 5% of samples — Archived Jun 30, 1997 Total Coliform Rule
Jan 20, 1997 Feb 19, 1997 Coliform (TCR) Other No No — 5% of samples — Archived Feb 19, 1997 Total Coliform Rule
Nov 1, 1996 Nov 30, 1996 Coliform (TCR) MR No Yes — 5% of samples — Archived Nov 30, 1996 Total Coliform Rule
Jul 13, 1996 Aug 12, 1996 Coliform (TCR) Other No No — 5% of samples — Archived Aug 12, 1996 Total Coliform Rule
May 1, 1996 May 31, 1996 Coliform (TCR) MR No Yes — 5% of samples — Archived May 31, 1996 Total Coliform Rule
Mar 16, 1996 Apr 15, 1996 Other No No — — — Archived Apr 15, 1996 Miscellaneous Other Rules
Jan 1, 1996 Jan 31, 1996 Coliform (TCR) MR No Yes — 5% of samples — Archived Jan 31, 1996 Total Coliform Rule
Feb 1, 1995 Feb 28, 1995 Coliform (TCR) MR No Yes — 5% of samples — Archived Feb 28, 1995 Total Coliform Rule
Aug 12, 1994 Sep 11, 1994 Other No No — — — Archived Sep 11, 1994 Miscellaneous Other Rules
Jun 1, 1994 Jun 30, 1994 Coliform (TCR) MR No No — 5% of samples — Archived Jun 30, 1994 Total Coliform 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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