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UNION DEL LLANO MDWCA

New Mexico — Community Water System — PWSID: NM3574429

System Information

PWSIDNM3574429
System NameUNION DEL LLANO MDWCA
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region06
Serves SchoolNo
WholesalerNo
First ReportedMar 12, 1980
Last ReportedDec 3, 2025

Location & Contact

StateNew Mexico
CityLLANO
ZIP Code87543
Address—
OrganizationLEHERISSEY, TANYA
Phone575-587-2063

Population & Service

Population Served400
Service Connections75

Drinking Water Violations (94)

This water system has 94 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
Mar 18, 2023 — Groundwater Rule TT Yes No — — — Resolved Aug 1, 2024 Ground Water Rule
Mar 18, 2023 — Groundwater Rule TT Yes No — — — Resolved Aug 1, 2024 Ground Water Rule
Mar 18, 2023 — Groundwater Rule TT Yes No — — — Resolved Aug 1, 2024 Ground Water Rule
Mar 18, 2023 — Groundwater Rule TT Yes No — — — Resolved Aug 1, 2024 Ground Water Rule
Mar 18, 2023 — Groundwater Rule TT Yes No — — — Resolved Aug 1, 2024 Ground Water Rule
Mar 18, 2023 — Groundwater Rule TT Yes No — — — Resolved Aug 1, 2024 Ground Water Rule
Mar 18, 2023 — Groundwater Rule TT Yes No — — — Resolved Aug 1, 2024 Ground Water Rule
Mar 18, 2023 — Groundwater Rule TT Yes No — — — Resolved Aug 1, 2024 Ground Water Rule
Mar 18, 2023 — Groundwater Rule TT Yes No — — — Resolved Aug 1, 2024 Ground Water Rule
Oct 1, 2022 — Lead and Copper Rule MR No No — TT — Resolved Sep 18, 2023 Lead and Copper Rule
Oct 1, 2022 — Lead and Copper Rule MR No No — TT — Resolved Sep 18, 2023 Lead and Copper Rule
Oct 1, 2022 — Lead and Copper Rule MR No No — TT — Resolved Sep 18, 2023 Lead and Copper Rule
Oct 1, 2022 — Lead and Copper Rule MR No No — TT — Resolved Sep 18, 2023 Lead and Copper Rule
Aug 22, 2018 — Public Notice Other No No — — — Resolved Mar 28, 2019 Public Notice Rule and Revised PN Rule
Aug 22, 2018 — Public Notice Other No No — — — Resolved Mar 28, 2019 Public Notice Rule and Revised PN Rule
Aug 22, 2018 — Public Notice Other No No — — — Resolved Mar 28, 2019 Public Notice Rule and Revised PN Rule
Aug 22, 2018 — Public Notice Other No No — — — Resolved Mar 28, 2019 Public Notice Rule and Revised PN Rule
Aug 22, 2018 — Public Notice Other No No — — — Resolved Mar 28, 2019 Public Notice Rule and Revised PN Rule
Aug 22, 2018 — Public Notice Other No No — — — Resolved Mar 28, 2019 Public Notice Rule and Revised PN Rule
Feb 24, 2018 — Public Notice Other No No — — — Resolved Jun 27, 2020 Public Notice Rule and Revised PN Rule
Nov 23, 2017 — Groundwater Rule TT Yes No — — — Resolved Jan 10, 2019 Ground Water Rule
Nov 23, 2017 — Groundwater Rule TT Yes No — — — Resolved Mar 1, 2018 Ground Water Rule
Nov 23, 2017 — Groundwater Rule TT Yes No — — — Resolved Mar 1, 2018 Ground Water Rule
Nov 23, 2017 — Groundwater Rule TT Yes No — — — Resolved Mar 1, 2018 Ground Water Rule
Nov 23, 2017 — Groundwater Rule TT Yes No — — — Resolved Mar 16, 2018 Ground Water Rule
Nov 23, 2017 — Groundwater Rule TT Yes No — — — Resolved Mar 16, 2018 Ground Water Rule
Nov 23, 2017 — Groundwater Rule TT Yes No — — — Resolved Mar 16, 2018 Ground Water Rule
Nov 23, 2017 — Groundwater Rule TT Yes No — — — Resolved Jan 10, 2019 Ground Water Rule
Nov 23, 2017 — Groundwater Rule TT Yes No — — — Resolved Oct 5, 2017 Ground Water Rule
Nov 23, 2017 — Groundwater Rule TT Yes No — — — Resolved Jan 10, 2019 Ground Water Rule
Nov 23, 2017 — Groundwater Rule TT Yes No — — — Resolved Oct 5, 2017 Ground Water Rule
Nov 23, 2017 — Groundwater Rule TT Yes No — — — Resolved Oct 5, 2017 Ground Water Rule
Jul 28, 2017 — Public Notice Other No No — — — Resolved Jun 17, 2019 Public Notice Rule and Revised PN Rule
Apr 22, 2017 — Public Notice Other No No — — — Resolved Jun 28, 2017 Public Notice Rule and Revised PN Rule
Apr 22, 2017 — Public Notice Other No No — — — Resolved Jun 28, 2017 Public Notice Rule and Revised PN Rule
Apr 22, 2017 — Public Notice Other No No — — — Resolved Jun 28, 2017 Public Notice Rule and Revised PN Rule
Apr 22, 2017 — Public Notice Other No No — — — Resolved Jun 28, 2017 Public Notice Rule and Revised PN Rule
Apr 22, 2017 — Public Notice Other No No — — — Resolved Jun 28, 2017 Public Notice Rule and Revised PN Rule
Apr 22, 2017 — Public Notice Other No No — — — Resolved Jun 28, 2017 Public Notice Rule and Revised PN Rule
Apr 22, 2017 — Public Notice Other No No — — — Resolved Jun 28, 2017 Public Notice Rule and Revised PN Rule
Apr 22, 2017 — Public Notice Other No No — — — Resolved Jun 28, 2017 Public Notice Rule and Revised PN Rule
Feb 1, 2017 Feb 28, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2017 Revised Total Coliform Rule
Jan 1, 2017 Jan 31, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Jan 31, 2017 Revised Total Coliform Rule
Jan 1, 2017 Jan 31, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Jan 31, 2017 Revised Total Coliform Rule
Jan 1, 2017 Jan 31, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Jan 31, 2017 Revised Total Coliform Rule
Dec 1, 2016 Dec 31, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Dec 31, 2016 Revised Total Coliform Rule
Dec 1, 2016 Dec 31, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Dec 31, 2016 Revised Total Coliform Rule
Aug 1, 2016 Aug 31, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Aug 31, 2016 Revised Total Coliform Rule
Aug 1, 2016 Aug 31, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Aug 31, 2016 Revised Total Coliform Rule
Aug 1, 2016 Aug 31, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Aug 31, 2016 Revised 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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