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Public water system record

Ojo Caliente MDWCA

Serves Ojo Caliente, Taos County and Rio Arriba County, NM · 226 people served

Federal records show 26 health-based violations and 23 monitoring/reporting issues for Ojo Caliente MDWCA in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.

  • NM3506621
  • OJO CALIENTE
  • NM
  • 226 served

System profile

Source water Groundwater
ZIP 87549
EPA system ID NM3506621

Verify this system on EPA ECHO →

Health-based violations, last 10 years
26
Resolved
25
Unresolved
1
Any acute record
No
Monitoring issues, last 10 years
23

Key facts

  • Ojo Caliente MDWCA draws water from 2 wells.
  • Highest measured level in the last 10 years: Combined Uranium, 48 µg/L, federal limit 30 µg/L (1.6 times the limit), 2020.
  • Most recent formal enforcement: compliance order (no penalty) by New Mexico, September 2010.
  • Record on file since 1999, with 49 health-based violations before October 19, 2016.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
 350 Oct 17, 2024 Active No
Combined Uranium
Contaminant limit exceeded
Measured 36 µg/L, federal limit 30 µg/L (1.2 times the limit)
 340 Jan 1, 2023 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 43 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Oct 1, 2022 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 46 µg/L, federal limit 30 µg/L (1.5 times the limit)
 340 Jul 1, 2022 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 42 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Apr 1, 2020 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 48 µg/L, federal limit 30 µg/L (1.6 times the limit)
 340 Jan 1, 2020 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 43 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Oct 1, 2019 Resolved No
Groundwater Rule
Treatment technique failure
 140 Sep 18, 2019 Resolved No
Groundwater Rule
Treatment technique failure
 140 Sep 18, 2019 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 33 µg/L, federal limit 30 µg/L (1.1 times the limit)
 340 Jul 1, 2019 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 40 µg/L, federal limit 30 µg/L (1.3 times the limit)
 340 Jul 1, 2018 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Jul 1, 2018 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 42 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Apr 1, 2018 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 40 µg/L, federal limit 30 µg/L (1.3 times the limit)
 340 Apr 1, 2018 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 40 µg/L, federal limit 30 µg/L (1.3 times the limit)
 340 Jan 1, 2018 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Jan 1, 2018 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Oct 1, 2017 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Oct 1, 2017 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 42 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Jul 1, 2017 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Jul 1, 2017 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 42 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Apr 1, 2017 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Apr 1, 2017 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 43 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Jan 1, 2017 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Jan 1, 2017 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Oct 1, 2016 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 43 µg/L, federal limit 30 µg/L (1.4 times the limit)
 340 Oct 1, 2016 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
LEAD AND COPPER RULE REVISIONS
RPT
 Oct 17, 2024 Active
Consumer Confidence Rule
OTHER
 Jul 1, 2023 Resolved
Consumer Confidence Rule
OTHER
 Jul 1, 2021 Resolved
Public Notice
OTHER
 Dec 14, 2019 Resolved
Groundwater Rule
OTHER
 Jun 23, 2019 Resolved
Public Notice
OTHER
 Nov 4, 2018 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2018 Resolved
Public Notice
OTHER
 May 24, 2018 Resolved
Public Notice
OTHER
 Mar 16, 2018 Resolved
Public Notice
OTHER
 Jan 18, 2018 Resolved
Public Notice
OTHER
 Jan 18, 2018 Resolved
Public Notice
OTHER
 Oct 8, 2017 Resolved
Public Notice
OTHER
 Sep 14, 2017 Resolved
Public Notice
OTHER
 Jul 28, 2017 Resolved
Public Notice
OTHER
 Mar 23, 2017 Resolved
Public Notice
OTHER
 Mar 23, 2017 Resolved
Public Notice
OTHER
 May 20, 2016 Resolved
Public Notice
OTHER
 May 19, 2016 Resolved
Public Notice
OTHER
 Apr 1, 2016 Resolved
Public Notice
OTHER
 Apr 1, 2016 Resolved
Public Notice
OTHER
 Nov 26, 2015 Resolved
Public Notice
OTHER
 Nov 26, 2015 Resolved
Public Notice
OTHER
 Aug 27, 2010 Resolved

Full record since 1999

EPA's records for Ojo Caliente MDWCA go back to 1999. Before October 19, 2016 they list 49 health-based violations (49 resolved) and 37 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 2
2000s 11 13
2010 to October 18, 2016 38 22
October 19, 2016 to 2019 18 13
2020s 6 3

Most recent health-based violation before October 19, 2016: Combined Uranium, began October 2016, Resolved.

Show all 49 health-based violations before October 19, 2016
Contaminant Start date Status
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Oct 1, 2016 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 43 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Oct 1, 2016 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Jul 1, 2016 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 42 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Jul 1, 2016 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Apr 1, 2016 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 42 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Jan 1, 2016 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Jan 1, 2016 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 42 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Oct 1, 2015 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Oct 1, 2015 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Jul 1, 2015 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Jul 1, 2015 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 40 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Apr 1, 2015 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 40 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Apr 1, 2015 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 39 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Jan 1, 2015 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 38 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Jan 1, 2015 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 38 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Oct 1, 2014 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 37 µg/L, federal limit 30 µg/L (1.2 times the limit)
 Oct 1, 2014 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 38 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Jul 1, 2014 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 36 µg/L, federal limit 30 µg/L (1.2 times the limit)
 Jul 1, 2014 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 38 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Apr 1, 2014 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 36 µg/L, federal limit 30 µg/L (1.2 times the limit)
 Apr 1, 2014 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 38 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Jan 1, 2014 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 39 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Jan 1, 2014 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 39 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Oct 1, 2013 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 40 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Jul 1, 2013 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Apr 1, 2013 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 42 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Jan 1, 2013 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 42 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Oct 1, 2012 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 42 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Jul 1, 2012 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Apr 1, 2012 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 39 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Jan 1, 2012 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 40 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Oct 1, 2011 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 41 µg/L, federal limit 30 µg/L (1.4 times the limit)
 Jul 1, 2011 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 40 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Apr 1, 2011 Resolved
Groundwater Rule
Treatment technique failure
 Jul 27, 2010 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 37 µg/L, federal limit 30 µg/L (1.2 times the limit)
 Jul 1, 2010 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 36 µg/L, federal limit 30 µg/L (1.2 times the limit)
 Apr 1, 2010 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 37 µg/L, federal limit 30 µg/L (1.2 times the limit)
 Jan 1, 2010 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 38 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Oct 1, 2009 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 38 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Jul 1, 2009 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 16 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
 Apr 1, 2009 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 38 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Apr 1, 2009 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 16 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
 Jan 1, 2009 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 38 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Jan 1, 2009 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 21 pCi/L, federal limit 15 pCi/L (1.4 times the limit)
 Oct 1, 2008 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 38 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Oct 1, 2008 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 38 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Jul 1, 2008 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 38 µg/L, federal limit 30 µg/L (1.3 times the limit)
 Apr 1, 2008 Resolved
Combined Uranium
Contaminant limit exceeded
Measured 34 µg/L, federal limit 30 µg/L (1.1 times the limit)
 Jan 1, 2004 Resolved

Enforcement actions

New Mexico regulators took 1 formal enforcement action against Ojo Caliente MDWCA in 2010. The most recent was a compliance order (no penalty) in September 2010.

Date By Action Violations covered
Sep 1, 2010 New Mexico Compliance order (no penalty) 68 violations (66 health-based): Combined Uranium, Groundwater Rule, Gross Alpha, Excl. Radon and U

What the violations mean

Combined Uranium

23 incidents

Test results for Combined Uranium were above the federal limit (a maximum contaminant level violation).

The utility had to notify customers about each of these violations.

Groundwater Rule

2 incidents

The system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).

The utility had to notify customers about each of these violations.

LEAD AND COPPER RULE REVISIONS

1 incident

The system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).

The utility had to notify customers about this violation.

Where the water comes from

Ojo Caliente MDWCA draws water from 2 wells.

Annual water quality report

Ojo Caliente MDWCA must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Ojo Caliente MDWCA for a copy.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by New Mexico.

Certified drinking water labs by state EPA guidance for private wells