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Public water system record

St Johns MHP

Serves an area of Doña Ana County, NM that includes Las Cruces · 431 people served

Federal records show 4 health-based violations and 6 monitoring/reporting issues for St Johns MHP in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.

  • NM3540007
  • LAS CRUCES
  • NM
  • 431 served

System profile

Source water Groundwater
ZIP 88007
EPA system ID NM3540007

Verify this system on EPA ECHO →

Health-based violations, last 10 years
4
Resolved
4
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
6

Key facts

  • St Johns MHP draws water from 2 wells.
  • Highest measured level in the last 10 years: Combined Uranium, 33 µg/L, federal limit 30 µg/L (1.1 times the limit), 2017.
  • Record on file since 1994, with 3 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 166 unknown out of 166 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 25, 2024 Resolved No
Groundwater Rule
Treatment technique failure
 140 Jan 25, 2024 Resolved No
Groundwater Rule
Treatment technique failure
 140 Jan 25, 2024 Resolved No
Combined Uranium
Contaminant limit exceeded
Measured 33 µg/L, federal limit 30 µg/L (1.1 times the limit)
 340 Oct 1, 2017 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, 2024 Active
Public Notice
OTHER
 Mar 16, 2024 Resolved
Groundwater Rule
OTHER
 Oct 30, 2023 Resolved
Asbestos
Monitoring and reporting
 Jan 1, 2020 Resolved
Public Notice
OTHER
 Feb 4, 2018 Resolved
Public Notice
OTHER
 Jan 16, 2015 Resolved

Full record since 1994

EPA's records for St Johns MHP go back to 1994. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 11 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 1 8
2010 to October 18, 2016 2 3
October 19, 2016 to 2019 1 1
2020s 3 4

Most recent health-based violation before October 19, 2016: Total Coliform, began September 2013, Resolved.

Show all 3 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Sep 1, 2013 Resolved
Total Coliform
Contaminant limit exceeded
 Aug 1, 2013 Resolved
Total Coliform
Contaminant limit exceeded
 Jul 1, 1999 Resolved

What the violations mean

Groundwater Rule

3 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.

Combined Uranium

1 incident

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

The utility had to notify customers about this violation.

Where the water comes from

St Johns MHP draws water from 2 wells.

Annual water quality report

St Johns MHP 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 St Johns MHP 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