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Public water system record

Ojo Sarco MDWCA

Serves Ojo Sarco, Rio Arriba County, NM · 225 people served

Federal records show 2 health-based violations and 13 monitoring/reporting issues for Ojo Sarco MDWCA in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.

  • NM3556821
  • OJO SARCO
  • NM
  • 225 served

System profile

Source water Groundwater
ZIP 87521
EPA system ID NM3556821

Verify this system on EPA ECHO →

Health-based violations, last 10 years
2
Resolved
2
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
13

Key facts

  • Ojo Sarco MDWCA draws water from 2 wells.
  • Record on file since 1999, with 9 health-based violations before October 20, 2016.
  • Lead pipe inventory: 0 lead and 97 unknown out of 102 service lines.

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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
Groundwater Rule
Treatment technique failure
 140 Jan 23, 2015 Resolved No
Groundwater Rule
Treatment technique failure
 140 Oct 28, 2014 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
Monitoring and reporting
 Oct 1, 2023 Resolved
Consumer Confidence Rule
OTHER
 Jul 1, 2022 Resolved
Public Notice
OTHER
 Jul 1, 2019 Resolved
Public Notice
OTHER
 Mar 8, 2018 Resolved
Public Notice
OTHER
 Mar 8, 2018 Resolved
Public Notice
OTHER
 Jul 9, 2017 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jan 1, 2017 Resolved
Revised Total Coliform Rule
Monitoring violation
 Dec 1, 2016 Resolved
Revised Total Coliform Rule
Monitoring violation
 Nov 1, 2016 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2016 Resolved
Revised Total Coliform Rule
Monitoring violation
 Oct 1, 2016 Resolved
Revised Total Coliform Rule
OTHER
 Jun 2, 2016 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2013 Resolved

Full record since 1999

EPA's records for Ojo Sarco MDWCA go back to 1999. Before October 20, 2016 they list 9 health-based violations (9 resolved) and 16 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 1 1
2000s 0 4
2010 to October 19, 2016 8 11
October 20, 2016 to 2019 0 7
2020s 0 2

Most recent health-based violation before October 20, 2016: Groundwater Rule, began January 2015, Resolved.

Show all 9 health-based violations before October 20, 2016
Contaminant Start date Status
Groundwater Rule
Treatment technique failure
 Jan 23, 2015 Resolved
Groundwater Rule
Treatment technique failure
 Jan 23, 2015 Resolved
Groundwater Rule
Treatment technique failure
 Jan 23, 2015 Resolved
Groundwater Rule
Treatment technique failure
 Jan 23, 2015 Resolved
Groundwater Rule
Treatment technique failure
 Oct 28, 2014 Resolved
Groundwater Rule
Treatment technique failure
 Oct 28, 2014 Resolved
Groundwater Rule
Treatment technique failure
 Oct 28, 2014 Resolved
Groundwater Rule
Treatment technique failure
 Oct 28, 2014 Resolved
Nitrate (acute)
Contaminant limit exceeded
 Jan 1, 1999 Resolved

What the violations mean

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.

Where the water comes from

Ojo Sarco MDWCA draws water from 2 wells.

Annual water quality report

Ojo Sarco 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 Sarco 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