Public water system record
City of Walsenburg
Serves Walsenburg, Huerfano County, CO · 3,230 people served
Federal records show 23 health-based violations and 45 monitoring/reporting issues for City of Walsenburg in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 23
- Resolved
- 22
- Unresolved
- 1
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 45
Key facts
- City of Walsenburg draws water from 1 surface water intake.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.106 mg/L, federal limit 0.08 mg/L (1.3 times the limit), 2019.
- Most recent enforcement action: boil water order by Colorado, February 2023.
- Record on file since 1989, with 11 health-based violations before October 19, 2016.
Check whether City of Walsenburg 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 REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Active | No |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Aug 1, 2022 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2022 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Aug 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jul 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Dec 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Nov 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Oct 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Aug 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jul 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2020 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 104.15 µg/L, federal limit 80 µg/L (1.3 times the limit)
|
220 | Jan 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 104.95 µg/L, federal limit 80 µg/L (1.3 times the limit)
|
220 | Oct 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.106 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jul 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.098 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Apr 1, 2019 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Dec 1, 2018 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Jul 1, 2015 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | May 11, 2015 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Public Notice
OTHER
|
Jan 4, 2026 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Public Notice
OTHER
|
Sep 8, 2025 | Resolved |
|
Public Notice
OTHER
|
Jul 4, 2025 | Resolved |
|
Public Notice
OTHER
|
Apr 4, 2025 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 3, 2025 | Resolved |
|
Public Notice
OTHER
|
Mar 8, 2025 | Resolved |
|
Public Notice
OTHER
|
Jan 4, 2025 | Resolved |
|
Public Notice
OTHER
|
Dec 8, 2024 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
|
Public Notice
OTHER
|
Oct 4, 2024 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Public Notice
OTHER
|
Oct 4, 2023 | Resolved |
|
Public Notice
OTHER
|
Apr 4, 2023 | Resolved |
|
Public Notice
OTHER
|
Oct 16, 2022 | Resolved |
|
Public Notice
OTHER
|
Oct 4, 2022 | Resolved |
|
Public Notice
OTHER
|
Sep 25, 2022 | Resolved |
|
Public Notice
OTHER
|
Jul 4, 2022 | Resolved |
|
Public Notice
OTHER
|
Apr 4, 2022 | Resolved |
|
Public Notice
OTHER
|
Sep 25, 2021 | Resolved |
|
Public Notice
OTHER
|
Mar 25, 2021 | Resolved |
|
Public Notice
OTHER
|
Dec 25, 2020 | Resolved |
|
Public Notice
OTHER
|
Dec 17, 2020 | Resolved |
|
Revised Total Coliform Rule
OTHER
|
Aug 25, 2020 | Resolved |
|
Public Notice
OTHER
|
Aug 24, 2020 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
May 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Apr 12, 2020 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2019 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Jul 20, 2019 | Resolved |
|
Public Notice
OTHER
|
Dec 22, 2018 | Resolved |
|
Public Notice
OTHER
|
Sep 8, 2018 | Resolved |
|
E. coli
Monitoring and reporting
|
Aug 1, 2018 | Resolved |
|
Public Notice
OTHER
|
Jun 8, 2018 | Resolved |
|
Public Notice
OTHER
|
Mar 8, 2018 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Dec 1, 2017 | Resolved |
|
E. coli
Monitoring and reporting
|
Nov 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
Full record since 1989
EPA's records for City of Walsenburg go back to 1989. Before October 19, 2016 they list 11 health-based violations (11 resolved) and 12 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 7 |
| 1990s | 8 | 0 |
| 2000s | 0 | 1 |
| 2010 to October 18, 2016 | 3 | 4 |
| October 19, 2016 to 2019 | 4 | 15 |
| 2020s | 17 | 30 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began April 2016, Resolved.
Show all 11 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2015 | Resolved |
|
Groundwater Rule
Treatment technique failure
|
May 11, 2015 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1996 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1993 | Resolved |
Enforcement actions
Colorado regulators took 2 formal enforcement actions against City of Walsenburg and issued 3 boil water orders between 2014 and 2023. The most recent was a boil water order in February 2023.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 1, 2023 | Colorado | Boil water order | 1 violation |
| Aug 10, 2020 | Colorado | Compliance order with a penalty | 13 violations (13 health-based): Interim Enhanced Surface Water Treatment Rule |
| Dec 6, 2017 | Colorado | Boil water order | 1 violation |
| Dec 30, 2016 | Colorado | Compliance order with a penalty | 2 violations (2 health-based): Surface Water Treatment Rule, Groundwater Rule |
| Dec 31, 2014 | Colorado | Boil water order | 1 violation (1 health-based): Surface Water Treatment Rule |
What the violations mean
Interim Enhanced Surface Water Treatment Rule
15 incidentsThe 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
Total Trihalomethanes (TTHMs)
4 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Surface Water Treatment Rule
2 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.
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.
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
City of Walsenburg draws water from 1 surface water intake.
Annual water quality report
City of Walsenburg 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