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Public water system record

Town of Granger

Serves Granger, Sweetwater County, WY · 139 people served

Federal records show 4 health-based violations and 17 monitoring/reporting issues for Town of Granger in the last ten years, including an unresolved Long Term 2 Enhanced Surface Water Treatment Rule violation.

  • WY5600020
  • GRANGER
  • WY
  • 139 served

System profile

Source water Surface water
ZIP 82934
EPA system ID WY5600020

Verify this system on EPA ECHO →

Health-based violations, last 10 years
4
Resolved
3
Unresolved
1
Any acute record
Yes
Monitoring issues, last 10 years
17

Key facts

  • Town of Granger draws water from 1 surface water intake.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit), 2021.
  • Most recent formal enforcement: compliance order (no penalty) by EPA, February 2024.
  • Record on file since 1982, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 53 unknown out of 54 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
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Sep 3, 2023 Resolved No
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Aug 1, 2022 Active
Enforcement action in place
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jan 1, 2021 Resolved No
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Jun 1, 2017 Resolved Yes

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Haloacetic Acids (HAA5)
Monitoring and reporting
 Apr 1, 2025 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Apr 1, 2025 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Oct 1, 2024 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Oct 1, 2024 Resolved
Interim Enhanced Surface Water Treatment Rule
OTHER
 Jul 10, 2023 Active
Enforcement action in place
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jun 1, 2020 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jun 1, 2020 Resolved
CARBON, TOTAL
Monitoring and reporting
 Oct 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
CARBON, TOTAL
Monitoring and reporting
 Oct 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
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.
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.
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.
CARBON, TOTAL
Monitoring and reporting
 Jan 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
 Jan 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
 Jan 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
 Dec 1, 2016 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Dec 1, 2016 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.

Full record since 1982

EPA's records for Town of Granger go back to 1982. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 80 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 0 8
1990s 0 53
2000s 0 17
2010 to October 18, 2016 1 2
October 19, 2016 to 2019 1 10
2020s 3 7

Most recent health-based violation before October 19, 2016: Total Coliform, began October 2013, Resolved.

Show the health-based violation before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Oct 1, 2013 Resolved

Enforcement actions

EPA took 2 formal enforcement actions against Town of Granger between 2018 and 2024. The most recent was a compliance order (no penalty) in February 2024.

Date By Action Violations covered
Feb 20, 2024 EPA Compliance order (no penalty) 8 violations (3 health-based): Interim Enhanced Surface Water Treatment Rule, CARBON, TOTAL, Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs), Long Term 2 Enhanced Surface Water Treatment Rule
Jul 27, 2018 EPA Compliance order (no penalty) 5 violations (1 health-based): CARBON, TOTAL, Interim Enhanced Surface Water Treatment Rule, Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)

What the violations mean

Long Term 2 Enhanced Surface Water Treatment Rule

2 incidents

The system failed required surface water treatment or filtration standards

Untreated or inadequately treated surface water can contain bacteria and viruses

Total Trihalomethanes (TTHMs)

1 incident

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Interim Enhanced Surface Water Treatment Rule

1 incident

The 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

Where the water comes from

Town of Granger draws water from 1 surface water intake.

Annual water quality report

Town of Granger 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 Town of Granger 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 EPA Region 8.

Certified drinking water labs by state EPA guidance for private wells