Public water system record

Chamita MDWCA

Serves Chamita, Rio Arriba County, NM · 902 people served

Federal records show 5 health-based violations and 26 monitoring/reporting issues for Chamita MDWCA in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.

  • NM3500121
  • SAN JUAN PUEBLO
  • NM
  • 902 served

System profile

Source water Groundwater
ZIP 87566
EPA system ID NM3500121

Verify this system on EPA ECHO →

Health-based violations, last 10 years
5
Resolved
5
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
26

Key facts

  • Chamita MDWCA draws water from 2 wells.
  • Record on file since 1996, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 305 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 May 2, 2024 Resolved No
Groundwater Rule
Treatment technique failure
140 Nov 13, 2019 Resolved No
Groundwater Rule
Treatment technique failure
140 Nov 13, 2019 Resolved No
Groundwater Rule
Treatment technique failure
140 Nov 13, 2019 Resolved No
Groundwater Rule
Treatment technique failure
140 Nov 13, 2019 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, 2025 Active
Consumer Confidence Rule
OTHER
Oct 1, 2024 Resolved
Revised Total Coliform Rule
Monitoring violation
Jun 1, 2024 Resolved
Chlorine
Monitoring and reporting
Apr 1, 2024 Resolved
Groundwater Rule
OTHER
Feb 5, 2024 Resolved
Consumer Confidence Rule
OTHER
Jul 1, 2022 Resolved
Public Notice
OTHER
Feb 23, 2022 Resolved
Public Notice
OTHER
Jan 8, 2022 Resolved
Lead and Copper Rule
Monitoring and reporting
Oct 1, 2021 Resolved
Public Notice
OTHER
Feb 13, 2021 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Sep 1, 2020 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
Sep 1, 2020 Resolved
Consumer Confidence Rule
OTHER
Jul 1, 2020 Resolved
Public Notice
OTHER
Mar 15, 2020 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Sep 1, 2019 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
Sep 1, 2019 Resolved
Groundwater Rule
OTHER
Aug 18, 2019 Resolved
Consumer Confidence Rule
OTHER
Oct 1, 2018 Resolved
Public Notice
OTHER
Sep 25, 2017 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Sep 1, 2017 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
Sep 1, 2017 Resolved
Revised Total Coliform Rule
Monitoring violation
Nov 1, 2016 Resolved
Chlorine
Monitoring and reporting
Oct 1, 2016 Resolved
Chlorine
Monitoring and reporting
Oct 1, 2016 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Revised Total Coliform Rule
Monitoring violation
Oct 1, 2016 Resolved
Revised Total Coliform Rule
OTHER
Jun 2, 2016 Resolved

Full record since 1996

EPA's records for Chamita MDWCA go back to 1996. Before October 19, 2016 they list no health-based violations and 29 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 5
2000s 0 11
2010 to October 18, 2016 0 13
October 19, 2016 to 2019 4 8
2020s 1 14

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.

Where the water comes from

Chamita MDWCA draws water from 2 wells.

Annual water quality report

Chamita 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.

Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.

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.