Public water system record
Rosa Joint Ventures Water System
Serves Aztec and Middle Mesa, San Juan County, NM · 239 people served
Federal records show 34 health-based violations and 32 monitoring/reporting issues for Rosa Joint Ventures Water System in the last ten years, including an unresolved Groundwater Rule violation.
System profile
- Health-based violations, last 10 years
- 34
- Resolved
- 26
- Unresolved
- 8
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 32
Key facts
- Rosa Joint Ventures Water System draws water from 2 wells.
- Highest measured level in the last 10 years: Selenium, 0.07 mg/L, federal limit 0.05 mg/L (1.4 times the limit), 2020.
- Most recent formal enforcement: compliance order with a penalty by New Mexico, February 2019.
- Record on file since 1997, with 17 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 83 service lines.
Check whether Rosa Joint Ventures 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 | Dec 24, 2025 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Dec 24, 2025 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Dec 24, 2025 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Dec 24, 2025 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Dec 24, 2025 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Dec 24, 2025 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Dec 24, 2025 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Dec 24, 2025 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Aug 9, 2023 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Aug 9, 2023 | Resolved | No |
|
Selenium
Contaminant limit exceeded
Measured 0.06 mg/L, federal limit 0.05 mg/L (1.2 times the limit)
|
330 | Oct 1, 2021 | Resolved | No |
|
Revised Total Coliform Rule
Treatment technique failure
|
110 | Dec 22, 2020 | Resolved | No |
|
Selenium
Contaminant limit exceeded
Measured 0.07 mg/L, federal limit 0.05 mg/L (1.4 times the limit)
|
330 | Jul 1, 2020 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 11, 2020 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 11, 2020 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 11, 2020 | Resolved | No |
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Jun 1, 2020 | Resolved | Yes |
|
Selenium
Contaminant limit exceeded
Measured 0.06 mg/L, federal limit 0.05 mg/L (1.2 times the limit)
|
330 | Apr 1, 2020 | Resolved | No |
|
Selenium
Contaminant limit exceeded
Measured 0.06 mg/L, federal limit 0.05 mg/L (1.2 times the limit)
|
330 | Jan 1, 2020 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 10, 2017 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Groundwater Rule
OTHER
|
Sep 28, 2025 | Active |
|
E. coli
Monitoring and reporting
|
Aug 17, 2023 | Resolved |
|
Public Notice
OTHER
|
Mar 22, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2022 | Resolved |
|
Public Notice
OTHER
|
Apr 1, 2022 | Resolved |
|
Public Notice
OTHER
|
Mar 13, 2022 | Resolved |
|
Public Notice
OTHER
|
Jan 1, 2022 | Resolved |
|
Public Notice
OTHER
|
Dec 10, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
E. coli
Monitoring and reporting
|
Aug 25, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Jan 9, 2021 | Active |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Dec 21, 2020 | Resolved |
|
Public Notice
OTHER
|
May 11, 2020 | Resolved |
|
Selenium
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Feb 28, 2020 | Resolved |
|
E. coli
Monitoring and reporting
|
May 25, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2018 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2018 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2018 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2017 | Resolved |
|
Public Notice
OTHER
|
Sep 25, 2017 | Resolved |
|
Public Notice
OTHER
|
Sep 25, 2017 | Resolved |
|
Public Notice
OTHER
|
Sep 25, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Public Notice
OTHER
|
Jun 18, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 19, 1999 | Active |
Full record since 1997
EPA's records for Rosa Joint Ventures Water System go back to 1997. Before October 19, 2016 they list 17 health-based violations (17 resolved) and 20 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 3 |
| 2000s | 7 | 1 |
| 2010 to October 18, 2016 | 9 | 16 |
| October 19, 2016 to 2019 | 15 | 12 |
| 2020s | 19 | 19 |
Most recent health-based violation before October 19, 2016: Total Coliform, began August 2014, Resolved.
Show all 17 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2014 | Resolved |
|
Selenium
Contaminant limit exceeded
Measured 0.06 mg/L, federal limit 0.05 mg/L (1.2 times the limit)
|
Oct 1, 2012 | Resolved |
|
Selenium
Contaminant limit exceeded
Measured 0.06 mg/L, federal limit 0.05 mg/L (1.2 times the limit)
|
Jul 1, 2012 | Resolved |
|
Selenium
Contaminant limit exceeded
Measured 0.06 mg/L, federal limit 0.05 mg/L (1.2 times the limit)
|
Apr 1, 2012 | Resolved |
|
Selenium
Contaminant limit exceeded
Measured 0.06 mg/L, federal limit 0.05 mg/L (1.2 times the limit)
|
Jan 1, 2012 | Resolved |
|
Selenium
Contaminant limit exceeded
Measured 0.06 mg/L, federal limit 0.05 mg/L (1.2 times the limit)
|
Oct 1, 2011 | Resolved |
|
Selenium
Contaminant limit exceeded
Measured 0.06 mg/L, federal limit 0.05 mg/L (1.2 times the limit)
|
Jul 1, 2011 | Resolved |
|
Selenium
Contaminant limit exceeded
Measured 0.072 mg/L, federal limit 0.05 mg/L (1.4 times the limit)
|
Jan 1, 2010 | Resolved |
|
Selenium
Contaminant limit exceeded
Measured 0.08 mg/L, federal limit 0.05 mg/L (1.6 times the limit)
|
Apr 1, 2004 | Resolved |
|
Selenium
Contaminant limit exceeded
Measured 0.06 mg/L, federal limit 0.05 mg/L (1.2 times the limit)
|
Jan 1, 2004 | Resolved |
|
Selenium
Contaminant limit exceeded
Measured 0.063 mg/L, federal limit 0.05 mg/L (1.3 times the limit)
|
Oct 1, 2003 | Resolved |
|
Selenium
Contaminant limit exceeded
Measured 0.072 mg/L, federal limit 0.05 mg/L (1.4 times the limit)
|
Jul 1, 2003 | Resolved |
|
Selenium
Contaminant limit exceeded
|
Apr 1, 2003 | Resolved |
|
Selenium
Contaminant limit exceeded
|
Jan 1, 2003 | Resolved |
|
Selenium
Contaminant limit exceeded
|
Oct 1, 2001 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1998 | Resolved |
Enforcement actions
New Mexico regulators took 4 formal enforcement actions against Rosa Joint Ventures Water System between 2012 and 2019. The most recent was a compliance order with a penalty in February 2019.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 18, 2019 | New Mexico | Compliance order with a penalty | 8 violations (6 health-based): Groundwater Rule, Consumer Confidence Rule |
| Sep 14, 2017 | New Mexico | Compliance order (no penalty) | 15 violations (15 health-based): Groundwater Rule |
| Jul 23, 2013 | New Mexico | Compliance order (no penalty) | 2 violations (2 health-based): Selenium |
| Nov 15, 2012 | New Mexico | Compliance order (no penalty) | 5 violations (5 health-based): Selenium |
What the violations mean
Groundwater Rule
28 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.
Selenium
4 incidentsTest results for Selenium were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about each of these violations.
Revised Total Coliform Rule
2 incidentsThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
Rosa Joint Ventures Water System draws water from 2 wells.
Annual water quality report
Rosa Joint Ventures 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.
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 Rosa Joint Ventures Water System 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