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Public water system record

Dry Prairie Rural Water Authority

Serves Culbertson, Roosevelt County, MT · 3,005 people served

Federal records show no health-based violations and 3 monitoring/reporting issues for Dry Prairie Rural Water Authority in the last ten years. At least one of these issues remains unresolved.

  • MT0004348
  • CULBERTSON
  • MT
  • 3,005 served

System profile

Source water Purchased surface water
ZIP 59218
EPA system ID MT0004348

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
3

Key facts

  • Dry Prairie Rural Water Authority buys its water from Assiniboine & Sioux Rural Water System.
  • Record on file since 2005, with 5 health-based violations before October 19, 2016.

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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.

None since October 2016.

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2024 Active
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jan 1, 2024 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jan 1, 2024 Resolved

Full record since 2005

EPA's records for Dry Prairie Rural Water Authority go back to 2005. Before October 19, 2016 they list 5 health-based violations (5 resolved) and 3 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 0 1
2010 to October 18, 2016 5 2
2020s 0 3

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began April 2015, Resolved.

Show all 5 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 137 µg/L, federal limit 80 µg/L (1.7 times the limit)
 Apr 1, 2015 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 94 µg/L, federal limit 60 µg/L (1.6 times the limit)
 Apr 1, 2015 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.0693 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 Jan 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1078 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Jan 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Oct 1, 2014 Resolved

Where the water comes from

Dry Prairie Rural Water Authority buys its water from Assiniboine & Sioux Rural Water System. It lists no wells or intakes of its own. 11 other community water systems and 1 smaller public system such as schools, businesses or campgrounds buy water from Dry Prairie Rural Water Authority. 2 other public water systems have seasonal connections to Dry Prairie Rural Water Authority.

Buys water from

Community systems that buy water from it

Annual water quality report

Dry Prairie Rural Water Authority 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 Montana.

Certified drinking water labs by state EPA guidance for private wells