Community Water System · PWSID AR0000449

Des Arc Waterworks

Serves 4,245 peopleGroundwaterOwner: Local GovernmentDes Arc, Arkansas
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On record since 2002: 11 violations. 8 over the limit · 2 missed or late tests · 1 notice or report. Most recent began 2025-04-01.

For this year's test results, ask the utility for its annual Consumer Confidence Report. Every community system must publish one.

8Over the limit
0Treatment lapse
2Missed or late test
1Notice or report

More violations on record than 71% of active water systems in Arkansas. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2002 · Missed or late test: 12005201020152016 · Over the limit: 22016 · Over the limit: 22017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42018 · Over the limit: 22018 · Over the limit: 22018 · Notice or report: 120202025 · Missed or late test: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
73% over the limit · 818% missed or late test · 29% notice or report · 1

Across Arkansas, 36% of violations are missed or late tests and 15% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Trihalomethanes (TTHM)2018-04-01 · Trihalomethanes (TTHM): measured 90.00 UG/L vs limit 80.00 UG/L (1.1×)2018-01-01 · Trihalomethanes (TTHM): measured 89.00 UG/L vs limit 80.00 UG/L (1.1×)2017-10-01 · Trihalomethanes (TTHM): measured 92.00 UG/L vs limit 80.00 UG/L (1.1×)2017-07-01 · Trihalomethanes (TTHM): measured 94.00 UG/L vs limit 80.00 UG/L (1.2×)2017-04-01 · Trihalomethanes (TTHM): measured 98.00 UG/L vs limit 80.00 UG/L (1.2×)2017-01-01 · Trihalomethanes (TTHM): measured 100.00 UG/L vs limit 80.00 UG/L (1.2×)2016-10-01 · Trihalomethanes (TTHM): measured 99.00 UG/L vs limit 80.00 UG/L (1.2×)2016-07-01 · Trihalomethanes (TTHM): measured 82.00 UG/L vs limit 80.00 UG/L (1.0×)
Each dot is one over-the-limit violation: the measured value divided by the limit it broke, on a log scale. Most legal limits for chemicals are running averages set for a lifetime of drinking, so “just over” and “ten times over” are very different news. Hover a dot for the numbers.

Lead & copper at the tap

Utilities sample taps in homes most likely to have lead pipes, and report the 90th-percentile result: 9 in 10 homes sampled came in at or below this number. Above the red line (the action level) the utility must act. The action level is not a safe level; EPA's health goal for lead is zero. EPA's file does not date these results, so they are shown highest first.

Lead, 90th percentile 4 results on file · action level 15 ppb

3 ppb
3 ppb
1 ppb
1 ppb

Every violation on record

  1. 2025-04-01E. ColiMonitoring, Source Water (GWR)Back in compliance
  2. 2018-04-01Unknown contaminantOperations ReportBack in compliance
  3. 2018-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 90.00 UG/L · limit 80.00 UG/LBack in compliance
  4. 2018-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 89.00 UG/L · limit 80.00 UG/LBack in compliance
  5. 2017-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 92.00 UG/L · limit 80.00 UG/LBack in compliance
  6. 2017-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 94.00 UG/L · limit 80.00 UG/LBack in compliance
  7. 2017-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 98.00 UG/L · limit 80.00 UG/LBack in compliance
  8. 2017-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 100.00 UG/L · limit 80.00 UG/LBack in compliance
  9. 2016-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 99.00 UG/L · limit 80.00 UG/LBack in compliance
  10. 2016-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 82.00 UG/L · limit 80.00 UG/LBack in compliance
  11. 2002-10-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance

System details

Population served4,245
Service connections1,698
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityDes Arc
EPA ZIP on file72040

Areas served

    Reading this record

    Des Arc Waterworks is a community water system that draws from groundwater and serves about 4,245 people in Des Arc, Arkansas. Everything above comes from the EPA's Safe Drinking Water Information System (SDWIS), where states report every violation by every public water system.

    Four kinds of violation. Only one is a measurement of the water: over the limit means a test came back above a legal maximum (an MCL). A treatment lapse means a required protective step was not done, such as disinfection, filtration, fixing a defect an inspector found, or filing a lead-pipe inventory. A missed or late test means a required test was skipped or never reported. That is the most common kind, and the most misread: it does not mean the water was bad, and it does not mean the water was fine. Notices and reports covers public notices and the annual Consumer Confidence Report.

    Status. “Back in compliance” means the state recorded a return to compliance. “Period ended” means the violation's compliance period is over but no return to compliance was ever filed, which is common in older records. EPA's federal copy lags state records by months, so call the utility for anything current.