Public water system record
Chilili Water Users Assn
Serves Tijeras and Chilili, Bernalillo County, NM · 175 people served
Federal records show 18 health-based violations and 134 monitoring/reporting issues for Chilili Water Users Assn in the last ten years, including an unresolved Groundwater Rule violation.
System profile
Source water
Groundwater
ZIP
87059
EPA system ID
NM3510801
- Health-based violations, last 10 years
- 18
- Resolved
- 6
- Unresolved
- 3
- Archived by EPA
- 9
- Any acute record
- No
- Monitoring issues, last 10 years
- 134
Key facts
- Chilili Water Users Assn draws water from 2 wells.
- Highest measured level in the last 10 years: Fluoride, 6.8 mg/L, federal limit 4 mg/L (1.7 times the limit), 2024.
- Most recent formal enforcement: compliance order (no penalty) by New Mexico, November 2024.
- Record on file since 1984, with 11 health-based violations before October 19, 2016.
Check whether Chilili Water Users Assn 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 |
|---|---|---|---|---|
|
Fluoride
Contaminant limit exceeded
Measured 4.7 mg/L, federal limit 4 mg/L (1.2 times the limit)
|
330 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Fluoride
Contaminant limit exceeded
Measured 5.3 mg/L, federal limit 4 mg/L (1.3 times the limit)
|
330 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Fluoride
Contaminant limit exceeded
Measured 5.4 mg/L, federal limit 4 mg/L (1.4 times the limit)
|
330 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Groundwater Rule
Treatment technique failure
|
140 | Nov 23, 2024 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Nov 23, 2024 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Nov 23, 2024 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Nov 23, 2024 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Nov 23, 2024 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Nov 23, 2024 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Nov 23, 2024 | Resolved | No |
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Active | No |
|
Fluoride
Contaminant limit exceeded
Measured 6.8 mg/L, federal limit 4 mg/L (1.7 times the limit)
|
330 | Oct 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Fluoride
Contaminant limit exceeded
Measured 6.2 mg/L, federal limit 4 mg/L (1.6 times the limit)
|
330 | Jul 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Fluoride
Contaminant limit exceeded
Measured 6.3 mg/L, federal limit 4 mg/L (1.6 times the limit)
|
330 | Apr 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Fluoride
Contaminant limit exceeded
Measured 6.1 mg/L, federal limit 4 mg/L (1.5 times the limit)
|
330 | Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Fluoride
Contaminant limit exceeded
Measured 6.2 mg/L, federal limit 4 mg/L (1.6 times the limit)
|
330 | Oct 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Fluoride
Contaminant limit exceeded
Measured 5.1 mg/L, federal limit 4 mg/L (1.3 times the limit)
|
330 | Jul 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Groundwater Rule
Treatment technique failure
|
140 | Sep 28, 2018 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2025 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2025 | Active |
|
Public Notice
OTHER
|
Sep 25, 2025 | Active |
|
Public Notice
OTHER
|
Jul 14, 2025 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
Public Notice
OTHER
|
Jun 30, 2025 | Active |
|
Public Notice
OTHER
|
Jun 12, 2025 | Active |
|
Public Notice
OTHER
|
May 1, 2025 | Active |
|
Public Notice
OTHER
|
Mar 13, 2025 | Active |
|
Public Notice
OTHER
|
Feb 21, 2025 | Active |
|
Public Notice
OTHER
|
Oct 20, 2024 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2024 | Resolved |
|
Groundwater Rule
OTHER
|
Aug 28, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Resolved |
|
Public Notice
OTHER
|
May 2, 2024 | Resolved |
|
Public Notice
OTHER
|
Apr 21, 2024 | Resolved |
|
Public Notice
OTHER
|
Apr 20, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2024 | Resolved |
|
Public Notice
OTHER
|
Dec 7, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
E. coli
Monitoring and reporting
|
Dec 1, 2022 | Active |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2022 | Resolved |
|
Public Notice
OTHER
|
Jul 22, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Public Notice
OTHER
|
Jul 8, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Apr 17, 2021 | Resolved |
|
Public Notice
OTHER
|
Feb 19, 2021 | Resolved |
|
Public Notice
OTHER
|
Aug 20, 2020 | Resolved |
|
Public Notice
OTHER
|
Aug 20, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chlorine
Monitoring and reporting
|
Apr 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chlorine
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chlorine
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chlorine
Monitoring and reporting
|
Oct 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chlorine
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Aug 22, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Dec 6, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Public Notice
OTHER
|
Dec 15, 2017 | Resolved |
|
Public Notice
OTHER
|
Nov 18, 2017 | Resolved |
|
Public Notice
OTHER
|
Oct 12, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Public Notice
OTHER
|
Sep 7, 2017 | Resolved |
|
Public Notice
OTHER
|
Aug 12, 2017 | Resolved |
|
Public Notice
OTHER
|
Aug 3, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Public Notice
OTHER
|
Jun 18, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 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 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2016 | Resolved |
|
Revised Total Coliform Rule
OTHER
|
Jun 2, 2016 | Resolved |
|
Public Notice
OTHER
|
Mar 6, 2016 | Resolved |
|
Public Notice
OTHER
|
Aug 2, 2014 | Resolved |
|
Public Notice
OTHER
|
Feb 10, 2013 | Resolved |
|
Public Notice
OTHER
|
May 9, 2012 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 19, 1999 | Active |
Full record since 1984
EPA's records for Chilili Water Users Assn go back to 1984. Before October 19, 2016 they list 11 health-based violations (10 resolved, 1 archived by EPA without a recorded fix) and 155 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 1 | 0 |
| 1990s | 3 | 45 |
| 2000s | 4 | 34 |
| 2010 to October 18, 2016 | 3 | 76 |
| October 19, 2016 to 2019 | 1 | 62 |
| 2020s | 17 | 62 |
Most recent health-based violation before October 19, 2016: Total Coliform, began December 2011, Resolved.
Show all 11 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2011 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Dec 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2004 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2001 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2001 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2000 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 1997 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1996 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1995 | Resolved |
|
Fluoride
Contaminant limit exceeded
|
Jul 1, 1984 | Archived |
Enforcement actions
New Mexico regulators and EPA took 10 formal enforcement actions against Chilili Water Users Assn and issued 1 boil water order between 1993 and 2024. The most recent was a compliance order (no penalty) in November 2024.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 13, 2024 | New Mexico | Compliance order (no penalty) | 9 violations (9 health-based): Fluoride |
| Apr 14, 2020 | New Mexico | Compliance order (no penalty) | 64 violations (1 health-based): Groundwater Rule, Chlorine, Asbestos, Public Notice |
| Dec 16, 2011 | New Mexico | Boil water order | 1 violation (1 health-based): Total Coliform |
| Aug 23, 2005 | New Mexico | Signed compliance agreement | 22 violations (4 health-based): Total Coliform |
| Jun 15, 2005 | New Mexico | Signed compliance agreement | 6 violations (1 health-based): Chlorine, Total Coliform |
| Nov 4, 2003 | New Mexico | Compliance order (no penalty) | 15 violations (2 health-based): Total Coliform |
| Aug 7, 2002 | EPA | Compliance order (no penalty) | 1 violation: Consumer Confidence Rule |
| Feb 11, 1999 | EPA | Penalty complaint settled by consent order or decree | 9 violations (2 health-based): Lead and Copper Rule, Total Coliform |
| Dec 8, 1997 | EPA | Complaint seeking a penalty | 15 violations (3 health-based): Lead and Copper Rule, Total Coliform |
| Oct 16, 1996 | EPA | Compliance order (no penalty) | 11 violations (2 health-based): Lead and Copper Rule, Total Coliform |
| Jan 19, 1993 | New Mexico | Compliance order (no penalty) | 1 violation: Total Coliform |
What the violations mean
Fluoride
9 incidentsFluoride exceeded the federal limit
Excessive fluoride can cause dental and skeletal fluorosis
Groundwater Rule
8 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
Chilili Water Users Assn draws water from 2 wells.
Annual water quality report
Chilili Water Users Assn 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 Chilili Water Users Assn 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