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Public water system record

Town of Walsh

Serves Walsh, Baca County, CO · 650 people served

Federal records show 17 health-based violations and 6 monitoring/reporting issues for Town of Walsh in the last ten years. The most serious issue in this window was a Nitrate violation that EPA lists as archived, not resolved.

  • CO0105900
  • WALSH
  • CO
  • 650 served

System profile

Source water Groundwater
ZIP 81090
EPA system ID CO0105900

Verify this system on EPA ECHO →

Health-based violations, last 10 years
17
Resolved
11
Unresolved
0
Archived by EPA
6
Any acute record
Yes
Monitoring issues, last 10 years
6

Key facts

  • Town of Walsh draws water from 3 wells (2 of them for emergency, seasonal or other part-time use).
  • Highest measured level in the last 10 years: Combined Radium (-226 and -228), 6.92 pCi/L, federal limit 5 pCi/L (1.4 times the limit), 2021.
  • Most recent formal enforcement: compliance order (no penalty) by Colorado, March 2022.
  • Record on file since 1992, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 237 unknown out of 355 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Nitrate
Contaminant limit exceeded
Measured 11.3 mg/L, federal limit 10 mg/L (1.1 times the limit)
 330 Oct 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 Yes
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
 340 Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
 340 Apr 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 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.
 Yes
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
 340 Jan 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
 340 Oct 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Nitrate
Contaminant limit exceeded
Measured 11.2 mg/L, federal limit 10 mg/L (1.1 times the limit)
 330 Jul 1, 2024 Resolved Yes
Nitrate
Contaminant limit exceeded
Measured 12.45 mg/L, federal limit 10 mg/L (1.2 times the limit)
 330 Apr 1, 2024 Resolved Yes
Nitrate
Contaminant limit exceeded
Measured 10.8 mg/L, federal limit 10 mg/L (1.1 times the limit)
 330 Oct 1, 2022 Resolved Yes
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
 340 Apr 1, 2022 Resolved No
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.45 pCi/L, federal limit 5 pCi/L (1.3 times the limit)
 340 Jan 1, 2022 Resolved No
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.92 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
 340 Oct 1, 2021 Resolved No
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5.725 pCi/L, federal limit 5 pCi/L (1.1 times the limit)
 340 Jul 1, 2021 Resolved No
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
 330 Jul 1, 2019 Resolved Yes
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
 330 Jul 1, 2018 Resolved Yes
Groundwater Rule
Treatment technique failure
 140 Jan 12, 2018 Resolved No
Groundwater Rule
Treatment technique failure
 140 Jan 12, 2018 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Public Notice
OTHER
 Oct 26, 2025 Resolved
Public Notice
OTHER
 Apr 26, 2025 Resolved
Public Notice
OTHER
 Sep 15, 2024 Resolved
Revised Total Coliform Rule
OTHER
 Apr 21, 2023 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2019 Resolved
Revised Total Coliform Rule
OTHER
 Sep 13, 2017 Resolved

Full record since 1992

EPA's records for Town of Walsh go back to 1992. 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 2
2000s 1 16
2010 to October 18, 2016 0 1
October 19, 2016 to 2019 4 2
2020s 13 4

Most recent health-based violation before October 19, 2016: Total Coliform, began October 2007, Resolved.

Show the health-based violation before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Oct 1, 2007 Resolved

Enforcement actions

Colorado regulators took 2 formal enforcement actions against Town of Walsh between 2019 and 2022. The most recent was a compliance order (no penalty) in March 2022.

Date By Action Violations covered
Mar 28, 2022 Colorado Compliance order (no penalty) 14 violations (14 health-based): Nitrate, Combined Radium (-226 and -228)
Feb 26, 2019 Colorado Compliance order (no penalty) 2 violations (2 health-based): Nitrate

What the violations mean

Combined Radium (-226 and -228)

8 incidents

Test results for Combined Radium (-226 and -228) were above the federal limit (a maximum contaminant level violation).

The utility had to notify customers about each of these violations.

Nitrate

7 incidents

Nitrate exceeded the federal limit

High nitrate is especially dangerous for infants under 6 months and can cause blue baby syndrome

Groundwater Rule

2 incidents

The 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.

Where the water comes from

Town of Walsh draws water from 3 wells (2 of them for emergency, seasonal or other part-time use).

Annual water quality report

Town of Walsh 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