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Public water system record

Upper Des Montes MDWCA

Serves Arroyo Seco, Taos County, NM · 222 people served

Federal records show 1 health-based violation and 5 monitoring/reporting issues for Upper Des Montes MDWCA in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.

  • NM3575029
  • ARROYO SECO
  • NM
  • 222 served

System profile

Source water Groundwater
ZIP 87514
EPA system ID NM3575029

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
5

Key facts

  • Upper Des Montes MDWCA draws water from 1 well.
  • Most recent formal enforcement: compliance order (no penalty) by EPA, September 2000.
  • Record on file since 1991, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 81 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 Feb 8, 2011 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Public Notice
OTHER
 Dec 18, 2016 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Aug 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Aug 1, 2016 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2014 Resolved
Public Notice
OTHER
 Jan 24, 2014 Resolved

Full record since 1991

EPA's records for Upper Des Montes MDWCA go back to 1991. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 265 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 5
2000s 0 246
2010 to October 18, 2016 1 14
October 19, 2016 to 2019 0 1

Most recent health-based violation before October 19, 2016: Groundwater Rule, began February 2011, Resolved.

Show the health-based violation before October 19, 2016
Contaminant Start date Status
Groundwater Rule
Treatment technique failure
 Feb 8, 2011 Resolved

Enforcement actions

EPA took 1 formal enforcement action against Upper Des Montes MDWCA in 2000. The most recent was a compliance order (no penalty) in September 2000.

Date By Action Violations covered
Sep 22, 2000 EPA Compliance order (no penalty) 2 violations: Consumer Confidence Rule

What the violations mean

Groundwater Rule

1 incident

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 this violation.

Where the water comes from

Upper Des Montes MDWCA draws water from 1 well.

Annual water quality report

Upper Des Montes 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 Upper Des Montes 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