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Public water system record

Prairie Grove Waterworks

Serves an area of Washington County, AR that includes Prairie Grove · 9,615 people served

Federal records show 4 health-based violations and no monitoring/reporting issues for Prairie Grove Waterworks in the last ten years. The most serious issue in this window was a Total Trihalomethanes (TTHMs) violation that EPA lists as archived, not resolved.

  • AR0000573
  • PRAIRIE GROVE
  • AR
  • 9,615 served

System profile

Source water Surface water
ZIP 72753
EPA system ID AR0000573

Verify this system on EPA ECHO →

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

Key facts

  • Prairie Grove Waterworks draws water from 1 surface water intake.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 88 µg/L, federal limit 80 µg/L (1.1 times the limit), 2023.
  • Most recent formal enforcement: compliance order (no penalty) by Arkansas, November 2023.
  • Record on file since 1998, with 7 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 3,457 unknown out of 3,457 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
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 88 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Jul 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 83 µg/L, federal limit 80 µg/L (at or just above the limit)
 220 Apr 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 81 µg/L, federal limit 80 µg/L (at or just above the limit)
 220 Jul 1, 2021 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 65 µg/L, federal limit 60 µg/L (1.1 times the limit)
 220 Apr 1, 2018 Resolved No

Full record since 1998

EPA's records for Prairie Grove Waterworks go back to 1998. Before October 19, 2016 they list 7 health-based violations (6 resolved, 1 archived by EPA without a recorded fix) and 1 monitoring or reporting violation.

Violations that began in Health-based Monitoring and reporting
1990s 1 1
2000s 2 0
2010 to October 18, 2016 4 0
October 19, 2016 to 2019 1 0
2020s 3 0

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

Show all 7 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 81 µg/L, federal limit 80 µg/L (at or just above the limit)
 Apr 1, 2016 Resolved
Total Coliform
Contaminant limit exceeded
 Sep 1, 2014 Resolved
Total Coliform
Contaminant limit exceeded
 Nov 1, 2010 Resolved
Total Coliform
Contaminant limit exceeded
 Aug 1, 2010 Resolved
Total Coliform
Contaminant limit exceeded
 Apr 1, 2009 Resolved
Total Coliform
Contaminant limit exceeded
 Oct 1, 2007 Resolved
Surface Water Treatment Rule
Treatment technique failure
 Jan 1, 1998 Archived

Enforcement actions

Arkansas regulators took 1 formal enforcement action against Prairie Grove Waterworks in 2023. The most recent was a compliance order (no penalty) in November 2023.

Date By Action Violations covered
Nov 14, 2023 Arkansas Compliance order (no penalty) 2 violations (2 health-based): Total Trihalomethanes (TTHMs)

What the violations mean

Total Trihalomethanes (TTHMs)

3 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Haloacetic Acids (HAA5)

1 incident

Haloacetic acid byproducts exceeded the federal limit

Long-term exposure to HAAs may increase cancer risk

Where the water comes from

Prairie Grove Waterworks draws water from 1 surface water intake. It also buys water from Benton-Washington Regional PWA.

Buys water from

Annual water quality report

Prairie Grove Waterworks 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 Arkansas.

Certified drinking water labs by state EPA guidance for private wells