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EL LLANO MDWCA

New Mexico — Community Water System — PWSID: NM3501621

System Information

PWSIDNM3501621
System NameEL LLANO MDWCA
System TypeCommunity Water System
Water SourceGround Water
Activity StatusNon-Inventory
Owner TypeLocal
EPA Region06
Serves SchoolNo
WholesalerNo
First ReportedMar 12, 1980
Last ReportedDec 3, 2025

Location & Contact

StateNew Mexico
CitySANTA CRUZ
ZIP Code87567
Address—
OrganizationMARQUEZ, JOHN
Phone505-753-9869

Population & Service

Population Served105
Service Connections53

Drinking Water Violations (118)

This water system has 118 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, 2012 — Consumer Confidence Rule Other No No — — — Resolved Aug 7, 2012 Consumer Confidence Rule
Jul 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved Aug 7, 2012 Consumer Confidence Rule
Jul 1, 2012 Sep 30, 2012 Combined Uranium MCL Yes No 38 UG/L 30 ug/L 30 Archived Sep 30, 2012 Radionuclides and Revised Rad Rule
Jul 1, 2012 Sep 30, 2012 Combined Uranium MCL Yes No 38 UG/L 30 ug/L 30 Archived Sep 30, 2012 Radionuclides and Revised Rad Rule
Jul 1, 2012 Sep 30, 2012 Combined Uranium MCL Yes No 38 UG/L 30 ug/L 30 Archived Sep 30, 2012 Radionuclides and Revised Rad Rule
May 18, 2012 — Public Notice Other No No — — — Resolved Aug 14, 2012 Public Notice Rule and Revised PN Rule
Apr 1, 2012 Jun 30, 2012 Combined Uranium MCL Yes No 37 UG/L 30 ug/L 30 Archived Jun 30, 2012 Radionuclides and Revised Rad Rule
Apr 1, 2012 Jun 30, 2012 Combined Uranium MCL Yes No 37 UG/L 30 ug/L 30 Archived Jun 30, 2012 Radionuclides and Revised Rad Rule
Apr 1, 2012 Jun 30, 2012 Combined Uranium MCL Yes No 37 UG/L 30 ug/L 30 Archived Jun 30, 2012 Radionuclides and Revised Rad Rule
Apr 1, 2012 Jun 30, 2012 Chlorine MR No Yes — 4.0 mg/L — Archived Jun 30, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2012 Jun 30, 2012 Chlorine MR No Yes — 4.0 mg/L — Archived Jun 30, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2012 Jun 30, 2012 Chlorine MR No Yes — 4.0 mg/L — Archived Jun 30, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Mar 11, 2012 — Public Notice Other No No — — — Resolved Mar 13, 2012 Public Notice Rule and Revised PN Rule
Jan 8, 2012 — Public Notice Other No No — — — Resolved Mar 13, 2012 Public Notice Rule and Revised PN Rule
Jan 1, 2012 Mar 31, 2012 Chlorine MR No Yes — 4.0 mg/L — Archived Mar 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2012 Mar 31, 2012 Chlorine MR No Yes — 4.0 mg/L — Archived Mar 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2012 Mar 31, 2012 Chlorine MR No Yes — 4.0 mg/L — Archived Mar 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2012 Mar 31, 2012 Combined Uranium MCL Yes No 36 UG/L 30 ug/L 30 Archived Mar 31, 2012 Radionuclides and Revised Rad Rule
Jan 1, 2012 Mar 31, 2012 Combined Uranium MCL Yes No 36 UG/L 30 ug/L 30 Archived Mar 31, 2012 Radionuclides and Revised Rad Rule
Jan 1, 2012 Mar 31, 2012 Combined Uranium MCL Yes No 36 UG/L 30 ug/L 30 Archived Mar 31, 2012 Radionuclides and Revised Rad Rule
Jan 1, 2012 Mar 31, 2012 Combined Uranium MCL Yes No 36 UG/L 30 ug/L 30 Archived Mar 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2011 Dec 31, 2011 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Dec 31, 2011 Radionuclides and Revised Rad Rule
Oct 1, 2011 Dec 31, 2011 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Dec 31, 2011 Radionuclides and Revised Rad Rule
Oct 1, 2011 Dec 31, 2011 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Dec 31, 2011 Radionuclides and Revised Rad Rule
Oct 1, 2011 Dec 31, 2011 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Dec 31, 2011 Radionuclides and Revised Rad Rule
Aug 1, 2011 Aug 31, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2011 Total Coliform Rule
Aug 1, 2011 Aug 31, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2011 Total Coliform Rule
Aug 1, 2011 Aug 31, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2011 Total Coliform Rule
Jul 1, 2011 Sep 30, 2011 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 — Consumer Confidence Rule Other No No — — — Resolved Jul 29, 2011 Consumer Confidence Rule
Jul 1, 2011 — Consumer Confidence Rule Other No No — — — Resolved Jul 29, 2011 Consumer Confidence Rule
Apr 1, 2011 Jun 30, 2011 Combined Uranium MCL Yes No 36 UG/L 30 ug/L 30 Archived Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Combined Uranium MCL Yes No 36 UG/L 30 ug/L 30 Archived Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Combined Uranium MCL Yes No 36 UG/L 30 ug/L 30 Archived Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Combined Uranium MCL Yes No 36 UG/L 30 ug/L 30 Archived Jun 30, 2011 Radionuclides and Revised Rad Rule
Mar 12, 2011 — Public Notice Other No No — — — Resolved Dec 16, 2010 Public Notice Rule and Revised PN Rule
Mar 12, 2011 — Public Notice Other No No — — — Resolved Dec 16, 2010 Public Notice Rule and Revised PN Rule
Oct 1, 2010 Dec 31, 2010 Combined Uranium MR No Yes — 30 ug/L — Archived Dec 31, 2010 Radionuclides and Revised Rad Rule
Oct 1, 2010 Dec 31, 2010 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Dec 31, 2010 Radionuclides and Revised Rad Rule
Oct 1, 2010 Dec 31, 2010 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Dec 31, 2010 Radionuclides and Revised Rad Rule
Jul 1, 2010 Sep 30, 2010 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Sep 30, 2010 Radionuclides and Revised Rad Rule
Jul 1, 2010 Sep 30, 2010 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Sep 30, 2010 Radionuclides and Revised Rad Rule
Jul 1, 2010 Sep 30, 2010 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Sep 30, 2010 Radionuclides and Revised Rad Rule
Jul 1, 2010 Sep 30, 2010 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Archived Sep 30, 2010 Radionuclides and Revised Rad Rule
Apr 1, 2010 Jun 30, 2010 Combined Uranium MCL Yes No 36 UG/L 30 ug/L 30 Archived Jun 30, 2010 Radionuclides and Revised Rad Rule
Apr 1, 2010 Jun 30, 2010 Combined Uranium MCL Yes No 36 UG/L 30 ug/L 30 Archived Jun 30, 2010 Radionuclides and Revised Rad Rule
Apr 1, 2010 Jun 30, 2010 Combined Uranium MCL Yes No 36 UG/L 30 ug/L 30 Archived Jun 30, 2010 Radionuclides and Revised Rad 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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