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Public water system record

Blacklick Valley Muni Auth

Serves an area of Cambria County, PA that includes Belsano, Twin Rocks and Vintondale · 1,650 people served

Federal records show 6 health-based violations and 12 monitoring/reporting issues for Blacklick Valley Muni Auth in the last ten years. The most serious issue in this window was a resolved Surface Water Treatment Rule violation.

  • PA4110077
  • TWIN ROCKS
  • PA
  • 1,650 served

System profile

Source water Purchased surface water
ZIP 15960
EPA system ID PA4110077

Verify this system on EPA ECHO →

Health-based violations, last 10 years
6
Resolved
4
Unresolved
0
Archived by EPA
2
Any acute record
No
Monitoring issues, last 10 years
12

Key facts

  • Blacklick Valley Muni Auth buys its water from Nanty Glo Water Auth and Ebensburg Boro Muni Auth.
  • Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.102 mg/L, federal limit 0.06 mg/L (1.7 times the limit), 2020.
  • Most recent formal enforcement: compliance order (no penalty) by Pennsylvania, February 2012.
  • Record on file since 2001, with 18 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 763 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
Surface Water Treatment Rule
Treatment technique failure
 120 Aug 1, 2025 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.069 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 220 Oct 1, 2020 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.096 mg/L, federal limit 0.06 mg/L (1.6 times the limit)
 220 Jul 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.102 mg/L, federal limit 0.06 mg/L (1.7 times the limit)
 220 Apr 1, 2020 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.096 mg/L, federal limit 0.06 mg/L (1.6 times the limit)
 220 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.077 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
 220 Oct 1, 2019 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
 Nov 11, 2025 Resolved
Public Notice
OTHER
 Oct 11, 2025 Resolved
Revised Total Coliform Rule
Monitoring violation
 Oct 1, 2024 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jul 1, 2023 Resolved
Public Notice
OTHER
 Feb 10, 2021 Active
Public Notice
OTHER
 Oct 28, 2020 Resolved
Public Notice
OTHER
 Aug 10, 2020 Resolved
Revised Total Coliform Rule
RPT
 Nov 12, 2018 Resolved
Public Notice
OTHER
 Nov 10, 2009 Active
Public Notice
OTHER
 Nov 10, 2005 Resolved
Public Notice
OTHER
 Aug 10, 2005 Resolved
Public Notice
OTHER
 May 11, 2005 Resolved

Full record since 2001

EPA's records for Blacklick Valley Muni Auth go back to 2001. Before October 19, 2016 they list 18 health-based violations (16 resolved, 2 archived by EPA without a recorded fix) and 15 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 9 12
2010 to October 18, 2016 9 3
October 19, 2016 to 2019 1 1
2020s 5 7

Most recent health-based violation before October 19, 2016: Haloacetic Acids (HAA5), began April 2016, Resolved.

Show all 18 health-based violations before October 19, 2016
Contaminant Start date Status
Haloacetic Acids (HAA5)
Contaminant limit exceeded
 Apr 1, 2016 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
 Jan 1, 2016 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
 Oct 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.104525 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Apr 1, 2011 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1009 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Jan 1, 2011 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.102875 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Oct 1, 2010 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.0946 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Jul 1, 2010 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083975 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Apr 1, 2010 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083075 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Jan 1, 2010 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081275 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Oct 1, 2009 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.089175 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Jul 1, 2009 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081738 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Jul 1, 2008 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.088313 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Apr 1, 2008 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.089138 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Jan 1, 2008 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.102943 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Jul 1, 2005 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.102107 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Apr 1, 2005 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.092295 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Jan 1, 2005 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
 Oct 1, 2004 Resolved

Enforcement actions

Pennsylvania regulators took 2 formal enforcement actions against Blacklick Valley Muni Auth between 2010 and 2012. The most recent was a compliance order (no penalty) in February 2012.

Date By Action Violations covered
Feb 7, 2012 Pennsylvania Compliance order (no penalty) 2 violations (2 health-based): Total Trihalomethanes (TTHMs)
Jun 9, 2010 Pennsylvania Compliance order (no penalty) 2 violations (2 health-based): Total Trihalomethanes (TTHMs)

What the violations mean

Haloacetic Acids (HAA5)

5 incidents

Haloacetic acid byproducts exceeded the federal limit

Long-term exposure to HAAs may increase cancer risk

Surface Water Treatment Rule

1 incident

The 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 this violation.

Where the water comes from

Blacklick Valley Muni Auth buys its water from Nanty Glo Water Auth and Ebensburg Boro Muni Auth. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

Blacklick Valley Muni Auth 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 Pennsylvania.

Certified drinking water labs by state EPA guidance for private wells