Public water system record

Upper Arroyo Hondo MDWCA

Serves Arroyo Hondo, Taos County, NM · 195 people served

Federal records show 6 health-based violations and 27 monitoring/reporting issues for Upper Arroyo Hondo MDWCA in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.

NM3507829
ARROYO HONDO
NM
195 served

System profile

Source water Groundwater

ZIP 87513

EPA system ID NM3507829

Verify this system on EPA ECHO →

Health-based violations, last 10 years: 6
Resolved: 2
Unresolved: 4
Any acute record: No
Monitoring issues, last 10 years: 27

Key facts

Upper Arroyo Hondo MDWCA draws water from 2 wells.
Most recent formal enforcement: compliance order (no penalty) by New Mexico, July 2011.
Record on file since 1992, with 39 health-based violations before October 19, 2016.

Check whether Upper Arroyo Hondo MDWCA serves your address

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
Groundwater Rule Treatment technique failure	140	Feb 2, 2023	Resolved	No
Groundwater Rule Treatment technique failure	140	Feb 2, 2023	Resolved	No
Groundwater Rule Treatment technique failure	140	Feb 2, 2023	Active	No
Groundwater Rule Treatment technique failure	140	Feb 2, 2023	Active	No
Groundwater Rule Treatment technique failure	140	Feb 2, 2023	Active	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, 2024	Resolved
Consumer Confidence Rule OTHER	Jul 1, 2023	Resolved
Groundwater Rule OTHER	Nov 7, 2022	Active
Consumer Confidence Rule OTHER	Jul 1, 2022	Resolved
Public Notice OTHER	Jun 3, 2022	Resolved
Chlorine Monitoring and reporting	Apr 1, 2022	Resolved
Revised Total Coliform Rule Monitoring violation	Apr 1, 2022	Resolved
Consumer Confidence Rule OTHER	Oct 1, 2021	Resolved
Public Notice OTHER	Apr 23, 2020	Resolved
Haloacetic Acids (HAA5) Monitoring and reporting	Sep 1, 2019	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Sep 1, 2019	Resolved
Haloacetic Acids (HAA5) Monitoring and reporting	Sep 1, 2018	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Sep 1, 2018	Resolved
Consumer Confidence Rule OTHER	Jul 1, 2018	Resolved
Public Notice OTHER	Dec 2, 2017	Resolved
Public Notice OTHER	Oct 26, 2017	Resolved
Consumer Confidence Rule OTHER	Oct 1, 2017	Resolved
Lead and Copper Rule Monitoring and reporting	Oct 1, 2017	Resolved
Haloacetic Acids (HAA5) Monitoring and reporting	Sep 1, 2017	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Sep 1, 2017	Resolved
Consumer Confidence Rule OTHER	Jul 1, 2017	Resolved
Haloacetic Acids (HAA5) Monitoring and reporting	Sep 1, 2016	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Sep 1, 2016	Resolved
Consumer Confidence Rule OTHER	Jul 1, 2016	Resolved
Public Notice OTHER	Mar 12, 2015	Resolved
Public Notice OTHER	Jan 24, 2014	Resolved

Full record since 1992

EPA's records for Upper Arroyo Hondo MDWCA go back to 1992. Before October 19, 2016 they list 39 health-based violations (38 resolved, 1 archived by EPA without a recorded fix) and 46 monitoring or reporting violations.

Violations that began in	Health-based	Monitoring and reporting
1990s	1	5
2000s	14	20
2010 to October 18, 2016	24	21
October 19, 2016 to 2019	0	12
2020s	6	10

Most recent health-based violation before October 19, 2016: Combined Uranium, began October 2015, Resolved.

Show all 39 health-based violations before October 19, 2016

Contaminant	Start date	Status
Combined Uranium Contaminant limit exceeded Measured 35 µg/L, federal limit 30 µg/L (1.2 times the limit)	Oct 1, 2015	Resolved
Combined Uranium Contaminant limit exceeded Measured 35 µg/L, federal limit 30 µg/L (1.2 times the limit)	Jul 1, 2015	Resolved
Combined Uranium Contaminant limit exceeded Measured 35 µg/L, federal limit 30 µg/L (1.2 times the limit)	Apr 1, 2015	Resolved
Combined Uranium Contaminant limit exceeded Measured 35 µg/L, federal limit 30 µg/L (1.2 times the limit)	Jan 1, 2015	Resolved
Combined Uranium Contaminant limit exceeded Measured 35 µg/L, federal limit 30 µg/L (1.2 times the limit)	Oct 1, 2014	Resolved
Groundwater Rule Treatment technique failure	Jul 24, 2014	Resolved
Combined Uranium Contaminant limit exceeded Measured 35 µg/L, federal limit 30 µg/L (1.2 times the limit)	Jul 1, 2014	Resolved
Combined Uranium Contaminant limit exceeded Measured 35 µg/L, federal limit 30 µg/L (1.2 times the limit)	Apr 1, 2014	Resolved
Combined Uranium Contaminant limit exceeded Measured 35 µg/L, federal limit 30 µg/L (1.2 times the limit)	Jan 1, 2014	Resolved
Combined Uranium Contaminant limit exceeded Measured 36 µg/L, federal limit 30 µg/L (1.2 times the limit)	Oct 1, 2013	Resolved
Combined Uranium Contaminant limit exceeded Measured 36 µg/L, federal limit 30 µg/L (1.2 times the limit)	Jul 1, 2013	Resolved
Combined Uranium Contaminant limit exceeded Measured 36 µg/L, federal limit 30 µg/L (1.2 times the limit)	Apr 1, 2013	Resolved
Combined Uranium Contaminant limit exceeded Measured 35 µg/L, federal limit 30 µg/L (1.2 times the limit)	Jan 1, 2013	Resolved
Combined Uranium Contaminant limit exceeded Measured 36 µg/L, federal limit 30 µg/L (1.2 times the limit)	Oct 1, 2012	Resolved
Combined Uranium Contaminant limit exceeded Measured 36 µg/L, federal limit 30 µg/L (1.2 times the limit)	Jul 1, 2012	Resolved
Combined Uranium Contaminant limit exceeded Measured 36 µg/L, federal limit 30 µg/L (1.2 times the limit)	Apr 1, 2012	Resolved
Combined Uranium Contaminant limit exceeded Measured 36 µg/L, federal limit 30 µg/L (1.2 times the limit)	Jan 1, 2012	Resolved
Combined Uranium Contaminant limit exceeded Measured 35 µg/L, federal limit 30 µg/L (1.2 times the limit)	Oct 1, 2011	Resolved
Combined Uranium Contaminant limit exceeded Measured 34 µg/L, federal limit 30 µg/L (1.1 times the limit)	Jul 1, 2011	Resolved
Combined Uranium Contaminant limit exceeded Measured 34 µg/L, federal limit 30 µg/L (1.1 times the limit)	Apr 1, 2011	Resolved
Combined Uranium Contaminant limit exceeded Measured 35 µg/L, federal limit 30 µg/L (1.2 times the limit)	Jan 1, 2011	Resolved
Combined Uranium Contaminant limit exceeded Measured 34 µg/L, federal limit 30 µg/L (1.1 times the limit)	Oct 1, 2010	Resolved
Combined Uranium Contaminant limit exceeded Measured 35 µg/L, federal limit 30 µg/L (1.2 times the limit)	Jul 1, 2010	Resolved
Combined Uranium Contaminant limit exceeded Measured 31 µg/L, federal limit 30 µg/L (at or just above the limit)	Apr 1, 2010	Resolved
Total Coliform Contaminant limit exceeded	Sep 1, 2009	Resolved
Combined Uranium Contaminant limit exceeded Measured 32 µg/L, federal limit 30 µg/L (1.1 times the limit)	Jul 1, 2009	Resolved
Combined Uranium Contaminant limit exceeded Measured 32 µg/L, federal limit 30 µg/L (1.1 times the limit)	Apr 1, 2009	Resolved
Combined Uranium Contaminant limit exceeded Measured 31 µg/L, federal limit 30 µg/L (at or just above the limit)	Apr 1, 2009	Resolved
Combined Uranium Contaminant limit exceeded Measured 32 µg/L, federal limit 30 µg/L (1.1 times the limit)	Jan 1, 2009	Resolved
Combined Uranium Contaminant limit exceeded Measured 31 µg/L, federal limit 30 µg/L (at or just above the limit)	Jan 1, 2009	Resolved
Combined Uranium Contaminant limit exceeded Measured 32 µg/L, federal limit 30 µg/L (1.1 times the limit)	Oct 1, 2008	Resolved
Combined Uranium Contaminant limit exceeded Measured 33 µg/L, federal limit 30 µg/L (1.1 times the limit)	Oct 1, 2008	Resolved
Total Coliform Contaminant limit exceeded	Aug 1, 2007	Resolved
Total Coliform Contaminant limit exceeded	Dec 1, 2004	Resolved
Total Coliform Contaminant limit exceeded	Oct 1, 2004	Resolved
Total Coliform Contaminant limit exceeded	Sep 1, 2004	Resolved
Total Coliform Contaminant limit exceeded	Aug 1, 2004	Resolved
Total Coliform Contaminant limit exceeded	Oct 1, 2001	Resolved
Total Coliform Contaminant limit exceeded	Aug 1, 1998	Archived

Enforcement actions

New Mexico regulators took 1 formal enforcement action against Upper Arroyo Hondo MDWCA in 2011. The most recent was a compliance order (no penalty) in July 2011.

Date	By	Action	Violations covered
Jul 7, 2011	New Mexico	Compliance order (no penalty)	30 violations (30 health-based): Combined Uranium

What the violations mean

Groundwater Rule

5 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

Upper Arroyo Hondo MDWCA draws water from 2 wells.

Annual water quality report

Upper Arroyo Hondo 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 Arroyo Hondo 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