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CABALLO LOCO RANCH

Arizona — Transient Non-Community — PWSID: AZ0420601

System Information

PWSIDAZ0420601
System NameCABALLO LOCO RANCH
System TypeTransient Non-Community
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedJan 22, 1982
Last ReportedNov 17, 2025

Location & Contact

StateArizona
CityLUKEVILLE
ZIP Code85341
Address—
OrganizationOSORIO, PALOMA
Phone520-387-5507

Population & Service

Population Served150
Service Connections5

Drinking Water Violations (52)

This water system has 52 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
Apr 1, 2025 Apr 30, 2025 Revised Total Coliform Rule MON No No — — — Resolved Apr 30, 2025 Revised Total Coliform Rule
Apr 1, 2025 Apr 30, 2025 Revised Total Coliform Rule MON No No — — — Resolved Apr 30, 2025 Revised Total Coliform Rule
Apr 1, 2025 Apr 30, 2025 Revised Total Coliform Rule MON No No — — — Resolved Apr 30, 2025 Revised Total Coliform Rule
Nov 21, 2024 — Public Notice Other No No — — — Resolved Feb 3, 2025 Public Notice Rule and Revised PN Rule
Nov 21, 2024 — Public Notice Other No No — — — Resolved Feb 3, 2025 Public Notice Rule and Revised PN Rule
Sep 22, 2024 — Public Notice Other No No — — — Resolved Sep 25, 2024 Public Notice Rule and Revised PN Rule
Aug 16, 2024 — Public Notice Other No No — — — Resolved Sep 25, 2024 Public Notice Rule and Revised PN Rule
Aug 16, 2024 — Public Notice Other No No — — — Resolved Sep 25, 2024 Public Notice Rule and Revised PN Rule
Oct 1, 2023 Oct 31, 2023 Revised Total Coliform Rule MON No No — — — Resolved Oct 31, 2023 Revised Total Coliform Rule
Oct 1, 2023 Oct 31, 2023 Revised Total Coliform Rule MON No No — — — Resolved Oct 31, 2023 Revised Total Coliform Rule
Oct 1, 2023 Oct 31, 2023 Revised Total Coliform Rule MON No No — — — Resolved Oct 31, 2023 Revised Total Coliform Rule
Oct 1, 2023 Oct 31, 2023 Revised Total Coliform Rule MON No No — — — Resolved Oct 31, 2023 Revised Total Coliform Rule
Aug 1, 2023 Aug 31, 2023 Revised Total Coliform Rule MON No No — — — Resolved Aug 31, 2023 Revised Total Coliform Rule
Aug 1, 2023 Aug 31, 2023 Revised Total Coliform Rule MON No No — — — Resolved Aug 31, 2023 Revised Total Coliform Rule
Aug 1, 2023 Aug 31, 2023 Revised Total Coliform Rule MON No No — — — Resolved Aug 31, 2023 Revised Total Coliform Rule
Jul 1, 2023 Jul 31, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2023 Revised Total Coliform Rule
Jul 1, 2023 Jul 31, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2023 Revised Total Coliform Rule
Jul 1, 2023 Jul 31, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2023 Revised Total Coliform Rule
Jul 1, 2023 Jul 31, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2023 Revised Total Coliform Rule
Nov 1, 2022 — Revised Total Coliform Rule TT Yes No — — — Resolved Jan 9, 2023 Revised Total Coliform Rule
Nov 1, 2022 — Revised Total Coliform Rule TT Yes No — — — Resolved Jan 9, 2023 Revised Total Coliform Rule
Nov 1, 2022 — Revised Total Coliform Rule RPT No No — — — Resolved Jan 9, 2023 Revised Total Coliform Rule
Nov 1, 2022 — Revised Total Coliform Rule RPT No No — — — Resolved Jan 9, 2023 Revised Total Coliform Rule
Oct 22, 2017 — Revised Total Coliform Rule TT Yes No — — — Resolved Dec 20, 2017 Revised Total Coliform Rule
Oct 22, 2017 — Revised Total Coliform Rule TT Yes No — — — Resolved Dec 20, 2017 Revised Total Coliform Rule
Oct 1, 2016 Oct 31, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2016 Revised Total Coliform Rule
Oct 1, 2016 Oct 31, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2016 Revised Total Coliform Rule
Nov 1, 2015 Nov 30, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2015 Total Coliform Rule
Nov 1, 2015 Nov 30, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2015 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2015 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2015 Total Coliform Rule
Oct 1, 2014 Oct 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2014 Total Coliform Rule
Oct 1, 2014 Oct 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2014 Total Coliform Rule
Jan 1, 2011 Dec 31, 2011 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2011 Nitrate Rule
Jan 1, 2011 Dec 31, 2011 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2011 Nitrate Rule
Sep 1, 2010 Sep 30, 2010 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2010 Total Coliform Rule
Jan 1, 2010 Dec 31, 2010 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2010 Nitrate Rule
Jan 1, 2010 Dec 31, 2010 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2010 Nitrate Rule
Jan 1, 2009 Dec 31, 2009 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2009 Nitrate Rule
Nov 1, 2008 Nov 30, 2008 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Nov 30, 2008 Total Coliform Rule
Nov 1, 2008 Nov 30, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2008 Total Coliform Rule
Nov 1, 2008 Nov 30, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2008 Total Coliform Rule
Oct 1, 2008 Oct 31, 2008 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Oct 31, 2008 Total Coliform Rule
Jul 1, 2008 Jul 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2008 Total Coliform Rule
Apr 1, 2008 Apr 30, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2008 Total Coliform Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
May 1, 2005 May 31, 2005 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 2005 Total Coliform Rule
Apr 1, 2005 Apr 30, 2005 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2005 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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