Public water system record
Mesilla Water System
Serves Mesilla, Doña Ana County, NM · 2,167 people served
Federal records show 6 health-based violations and 22 monitoring/reporting issues for Mesilla Water System in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 6
- Resolved
- 5
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 22
Key facts
- Mesilla Water System draws water from 2 wells.
- Record on file since 1999, with 1 health-based violation before October 19, 2016.
Check whether Mesilla Water System serves your address
Health-based violations
Since October 2016Violation 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 | Nov 20, 2024 | Resolved | No |
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Aug 25, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Aug 25, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Aug 25, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Aug 25, 2017 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
|
Public Notice
OTHER
|
Dec 19, 2021 | Resolved |
|
Public Notice
OTHER
|
Nov 18, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2020 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2018 | Resolved |
|
Public Notice
OTHER
|
Aug 18, 2018 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Public Notice
OTHER
|
Feb 8, 2018 | Resolved |
|
Public Notice
OTHER
|
Feb 8, 2018 | Resolved |
|
Public Notice
OTHER
|
Feb 8, 2018 | Resolved |
|
Public Notice
OTHER
|
Feb 8, 2018 | Resolved |
|
Public Notice
OTHER
|
Oct 25, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jul 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jul 1, 2016 | Resolved |
Full record since 1999
EPA's records for Mesilla Water System go back to 1999. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 19 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 1 |
| 2000s | 1 | 7 |
| 2010 to October 18, 2016 | 0 | 11 |
| October 19, 2016 to 2019 | 4 | 13 |
| 2020s | 2 | 7 |
Most recent health-based violation before October 19, 2016: Total Coliform, began August 2005, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2005 | Resolved |
What the violations mean
Groundwater Rule
5 incidentsThe 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 incidentThe 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
Mesilla Water System draws water from 2 wells.
Annual water quality report
Mesilla Water System 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.
Certified drinking water labs by state EPA guidance for private wells