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Public water system record

Des Arc Waterworks

Serves an area of Prairie County and Lonoke County, AR that includes Des Arc · 4,245 people served

Federal records show 7 health-based violations and 1 monitoring/reporting issue for Des Arc Waterworks in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • AR0000449
  • DES ARC
  • AR
  • 4,245 served

System profile

Source water Groundwater
ZIP 72040
EPA system ID AR0000449

Verify this system on EPA ECHO →

Health-based violations, last 10 years
7
Resolved
7
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
1

Key facts

  • Des Arc Waterworks draws water from 4 wells.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 100 µg/L, federal limit 80 µg/L (1.3 times the limit), 2017.
  • Most recent formal enforcement: administrative penalty by Arkansas, May 2017.
  • Record on file since 1994, with 5 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 1,761 unknown out of 2,055 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 90 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Apr 1, 2018 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 89 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Jan 1, 2018 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 92 µg/L, federal limit 80 µg/L (1.2 times the limit)
 220 Oct 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 94 µg/L, federal limit 80 µg/L (1.2 times the limit)
 220 Jul 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 98 µg/L, federal limit 80 µg/L (1.2 times the limit)
 220 Apr 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 100 µg/L, federal limit 80 µg/L (1.3 times the limit)
 220 Jan 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 99 µg/L, federal limit 80 µg/L (1.2 times the limit)
 220 Oct 1, 2016 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
E. coli
Monitoring and reporting
 Apr 1, 2025 Resolved

Full record since 1994

EPA's records for Des Arc Waterworks go back to 1994. Before October 19, 2016 they list 5 health-based violations (3 resolved, 2 archived by EPA without a recorded fix) and 11 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 2 9
2000s 1 2
2010 to October 18, 2016 2 0
October 19, 2016 to 2019 6 0
2020s 0 1

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

Show all 5 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 99 µg/L, federal limit 80 µg/L (1.2 times the limit)
 Oct 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 82 µg/L, federal limit 80 µg/L (at or just above the limit)
 Jul 1, 2016 Resolved
Total Coliform
Contaminant limit exceeded
 Sep 1, 2004 Resolved
Total Coliform
Contaminant limit exceeded
 Mar 1, 1998 Archived
Total Coliform (acute)
Contaminant limit exceeded
 Jul 1, 1994 Archived

Enforcement actions

Arkansas regulators took 2 formal enforcement actions against Des Arc Waterworks in 2017. The most recent was an administrative penalty in May 2017.

Date By Action Violations covered
May 3, 2017 Arkansas Administrative penalty 8 violations (8 health-based): Total Trihalomethanes (TTHMs)
Jan 30, 2017 Arkansas Compliance order (no penalty) 2 violations (2 health-based): Total Trihalomethanes (TTHMs)

What the violations mean

Total Trihalomethanes (TTHMs)

7 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Des Arc Waterworks draws water from 4 wells.

Annual water quality report

Des Arc 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