Public water system record
Town of Antonito
Serves Antonito, Conejos County, CO · 981 people served
Federal records show 9 health-based violations and 73 monitoring/reporting issues for Town of Antonito in the last ten years. The most serious issue in this window was a resolved Lead and Copper Rule violation.
System profile
- Health-based violations, last 10 years
- 9
- Resolved
- 9
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 73
Key facts
- Town of Antonito draws water from 2 wells.
- Most recent formal enforcement: compliance order (no penalty) by Colorado, June 2015.
- Record on file since 1993, with 5 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 482 service lines.
Check whether Town of Antonito 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 |
|---|---|---|---|---|
|
Lead and Copper Rule
Treatment technique failure
|
350 | Jul 1, 2019 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2018 | Resolved | No |
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
210 | Apr 25, 2018 | Resolved | No |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2018 | Resolved | Yes |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2018 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Feb 11, 2018 | Resolved | No |
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
210 | Sep 13, 2017 | Resolved | No |
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
210 | Nov 1, 2016 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Aug 1, 2015 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2025 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Nov 1, 2025 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2025 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2025 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2025 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2025 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2025 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Dec 1, 2022 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Dec 1, 2022 | Resolved |
|
Public Notice
OTHER
|
Feb 25, 2022 | Resolved |
|
Public Notice
OTHER
|
Nov 25, 2021 | Resolved |
|
Public Notice
OTHER
|
Aug 27, 2020 | Resolved |
|
Styrene
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Toluene
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Benzene
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Feb 17, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Nov 17, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Public Notice
OTHER
|
Nov 2, 2017 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2017 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
CARBON, TOTAL
Monitoring and reporting
|
Jul 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
May 1, 2017 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Apr 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Mar 1, 2017 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Mar 1, 2017 | Resolved |
|
Public Notice
OTHER
|
Dec 21, 2016 | Resolved |
|
Public Notice
OTHER
|
Dec 2, 2016 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
Full record since 1993
EPA's records for Town of Antonito go back to 1993. Before October 19, 2016 they list 5 health-based violations (5 resolved) and 102 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 2 |
| 2000s | 0 | 8 |
| 2010 to October 18, 2016 | 5 | 92 |
| October 19, 2016 to 2019 | 8 | 25 |
| 2020s | 0 | 46 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began August 2015, Resolved.
Show all 5 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2015 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2014 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2013 | Resolved |
|
Groundwater Rule
Treatment technique failure
|
Mar 23, 2012 | Resolved |
Enforcement actions
Colorado regulators took 2 formal enforcement actions against Town of Antonito between 2013 and 2015. The most recent was a compliance order (no penalty) in June 2015.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jun 12, 2015 | Colorado | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Oct 8, 2013 | Colorado | Compliance order (no penalty) | 9 violations (1 health-based): Groundwater Rule, Total Coliform, Nitrate, Chlorine |
What the violations mean
Surface Water Treatment Rule
3 incidentsThe system did not complete a treatment step or action that the Surface Water Treatment Rule requires (a treatment technique violation).
The utility had to notify customers about each of these violations.
Stage 1 Disinfection Byproducts Rule
3 incidentsThe system did not meet a treatment requirement of the Stage 1 Disinfectants and Disinfection Byproducts Rule
Byproducts form when disinfectants react with natural material in water. Long-term exposure above federal limits may increase cancer risk
Lead and Copper Rule
1 incidentThe system did not complete a treatment step or action that the Lead and Copper Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Interim Enhanced Surface Water Treatment Rule
1 incidentThe system did not meet a filtration or treatment requirement for surface water
Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through
Groundwater Rule
1 incidentThe 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 this violation.
Where the water comes from
Town of Antonito draws water from 2 wells.
Annual water quality report
Town of Antonito 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 Colorado.
Certified drinking water labs by state EPA guidance for private wells