Community Water System · PWSID LA1061003

Dubach Water System

Serves 1,218 peopleGroundwaterOwner: Local GovernmentDubach, Louisiana
Nothing open right now.

On record since 2004: 59 violations. 36 over the limit · 18 missed or late tests · 5 notices or reports. Most recent began 2025-07-01.

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

36Over the limit
0Treatment lapse
18Missed or late test
5Notice or report

More violations on record than 95% of active water systems in Louisiana. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2004 · Missed or late test: 120052009 · Missed or late test: 32009 · Missed or late test: 32009 · Missed or late test: 32010 · Missed or late test: 52010 · Missed or late test: 52010 · Missed or late test: 52010 · Missed or late test: 52010 · Missed or late test: 520102011 · Missed or late test: 22011 · Missed or late test: 22012 · Notice or report: 12013 · Over the limit: 22013 · Over the limit: 22013 · Missed or late test: 22013 · Missed or late test: 22014 · Over the limit: 42014 · Over the limit: 42014 · Over the limit: 42014 · Over the limit: 42014 · Missed or late test: 22014 · Missed or late test: 22015 · Over the limit: 42015 · Over the limit: 42015 · Over the limit: 42015 · Over the limit: 420152016 · Over the limit: 42016 · Over the limit: 42016 · Over the limit: 42016 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Missed or late test: 12017 · Notice or report: 12018 · Over the limit: 22018 · Over the limit: 22019 · Missed or late test: 12020 · Over the limit: 32020 · Over the limit: 32020 · Over the limit: 32020 · Missed or late test: 120202021 · Over the limit: 32021 · Over the limit: 32021 · Over the limit: 32023 · Over the limit: 32023 · Over the limit: 32023 · Over the limit: 32023 · Notice or report: 22023 · Notice or report: 22024 · Over the limit: 42024 · Over the limit: 42024 · Over the limit: 42024 · Over the limit: 42025 · Over the limit: 32025 · Over the limit: 32025 · Over the limit: 32025 · Notice or report: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
61% over the limit · 3631% missed or late test · 188% notice or report · 5

Across Louisiana, 31% of violations are missed or late tests and 25% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Trihalomethanes (TTHM)2025-07-01 · Trihalomethanes (TTHM): measured 0.1510 MG/L vs limit 0.0800 MG/L (1.9×)2025-04-01 · Trihalomethanes (TTHM): measured 0.1560 MG/L vs limit 0.0800 MG/L (1.9×)2025-01-01 · Trihalomethanes (TTHM): measured 0.1530 MG/L vs limit 0.0800 MG/L (1.9×)2024-10-01 · Trihalomethanes (TTHM): measured 0.1560 MG/L vs limit 0.0800 MG/L (1.9×)2024-07-01 · Trihalomethanes (TTHM): measured 0.1590 MG/L vs limit 0.0800 MG/L (2.0×)2024-04-01 · Trihalomethanes (TTHM): measured 0.1490 MG/L vs limit 0.0800 MG/L (1.9×)2024-01-01 · Trihalomethanes (TTHM): measured 0.1380 MG/L vs limit 0.0800 MG/L (1.7×)2023-10-01 · Trihalomethanes (TTHM): measured 0.1200 MG/L vs limit 0.0800 MG/L (1.5×)2023-07-01 · Trihalomethanes (TTHM): measured 0.1050 MG/L vs limit 0.0800 MG/L (1.3×)2023-04-01 · Trihalomethanes (TTHM): measured 0.0970 MG/L vs limit 0.0800 MG/L (1.2×)2021-07-01 · Trihalomethanes (TTHM): measured 0.0810 MG/L vs limit 0.0800 MG/L (1.0×)2021-04-01 · Trihalomethanes (TTHM): measured 0.0850 MG/L vs limit 0.0800 MG/L (1.1×)2021-01-01 · Trihalomethanes (TTHM): measured 0.0890 MG/L vs limit 0.0800 MG/L (1.1×)2020-10-01 · Trihalomethanes (TTHM): measured 0.0950 MG/L vs limit 0.0800 MG/L (1.2×)2020-07-01 · Trihalomethanes (TTHM): measured 0.0870 MG/L vs limit 0.0800 MG/L (1.1×)2020-04-01 · Trihalomethanes (TTHM): measured 0.0880 MG/L vs limit 0.0800 MG/L (1.1×)2018-04-01 · Trihalomethanes (TTHM): measured 87.00 UG/L vs limit 80.00 UG/L (1.1×)2018-01-01 · Trihalomethanes (TTHM): measured 82.00 UG/L vs limit 80.00 UG/L (1.0×)2017-10-01 · Trihalomethanes (TTHM): measured 209.00 UG/L vs limit 80.00 UG/L (2.6×)2017-07-01 · Trihalomethanes (TTHM): measured 164.00 UG/L vs limit 80.00 UG/L (2.0×)2017-04-01 · Trihalomethanes (TTHM): measured 166.00 UG/L vs limit 80.00 UG/L (2.1×)2017-01-01 · Trihalomethanes (TTHM): measured 157.00 UG/L vs limit 80.00 UG/L (2.0×)2016-10-01 · Trihalomethanes (TTHM): measured 125.00 UG/L vs limit 80.00 UG/L (1.6×)2016-07-01 · Trihalomethanes (TTHM): measured 155.00 UG/L vs limit 80.00 UG/L (1.9×)2016-04-01 · Trihalomethanes (TTHM): measured 180.00 UG/L vs limit 80.00 UG/L (2.2×)2016-01-01 · Trihalomethanes (TTHM): measured 203.00 UG/L vs limit 80.00 UG/L (2.5×)2015-10-01 · Trihalomethanes (TTHM): measured 219.00 UG/L vs limit 80.00 UG/L (2.7×)2015-07-01 · Trihalomethanes (TTHM): measured 210.00 UG/L vs limit 80.00 UG/L (2.6×)2015-04-01 · Trihalomethanes (TTHM): measured 195.00 UG/L vs limit 80.00 UG/L (2.4×)2015-01-01 · Trihalomethanes (TTHM): measured 204.00 UG/L vs limit 80.00 UG/L (2.5×)2014-10-01 · Trihalomethanes (TTHM): measured 212.00 UG/L vs limit 80.00 UG/L (2.6×)2014-07-01 · Trihalomethanes (TTHM): measured 222.00 UG/L vs limit 80.00 UG/L (2.8×)2014-04-01 · Trihalomethanes (TTHM): measured 296.00 UG/L vs limit 80.00 UG/L (3.7×)2014-01-01 · Trihalomethanes (TTHM): measured 300.00 UG/L vs limit 80.00 UG/L (3.8×)2013-10-01 · Trihalomethanes (TTHM): measured 229.00 UG/L vs limit 80.00 UG/L (2.9×)2013-07-01 · Trihalomethanes (TTHM): measured 172.00 UG/L vs limit 80.00 UG/L (2.1×)
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 3 results on file · action level 15 ppb

0 ppb
0 ppb
0 ppb

Every violation on record

  1. 2025-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1510 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  2. 2025-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1560 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  3. 2025-02-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  4. 2025-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1530 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  5. 2024-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1560 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  6. 2024-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1590 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  7. 2024-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1490 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  8. 2024-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1380 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  9. 2023-11-09Public NoticePN Violation for NPDWR ViolationBack in compliance
  10. 2023-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1200 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  11. 2023-08-05Public NoticePN Violation for NPDWR ViolationBack in compliance
  12. 2023-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1050 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  13. 2023-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0970 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  14. 2021-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0810 MG/L · limit 0.0800 MG/LBack in compliance
  15. 2021-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0850 MG/L · limit 0.0800 MG/LBack in compliance
  16. 2021-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0890 MG/L · limit 0.0800 MG/LBack in compliance
  17. 2020-12-10Lead and Copper RuleLead Consumer NoticeBack in compliance
  18. 2020-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0950 MG/L · limit 0.0800 MG/LBack in compliance
  19. 2020-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0870 MG/L · limit 0.0800 MG/LBack in compliance
  20. 2020-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0880 MG/L · limit 0.0800 MG/LBack in compliance
  21. 2019-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  22. 2018-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 87.00 UG/L · limit 80.00 UG/LBack in compliance
  23. 2018-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 82.00 UG/L · limit 80.00 UG/LBack in compliance
  24. 2017-10-31Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  25. 2017-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 209.00 UG/L · limit 80.00 UG/LBack in compliance
Show the other 34 entries
  1. 2017-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  2. 2017-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 164.00 UG/L · limit 80.00 UG/LBack in compliance
  3. 2017-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 166.00 UG/L · limit 80.00 UG/LBack in compliance
  4. 2017-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 157.00 UG/L · limit 80.00 UG/LBack in compliance
  5. 2016-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 125.00 UG/L · limit 80.00 UG/LBack in compliance
  6. 2016-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 155.00 UG/L · limit 80.00 UG/LBack in compliance
  7. 2016-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 180.00 UG/L · limit 80.00 UG/LBack in compliance
  8. 2016-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 203.00 UG/L · limit 80.00 UG/LBack in compliance
  9. 2015-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 219.00 UG/L · limit 80.00 UG/LBack in compliance
  10. 2015-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 210.00 UG/L · limit 80.00 UG/LBack in compliance
  11. 2015-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 195.00 UG/L · limit 80.00 UG/LBack in compliance
  12. 2015-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 204.00 UG/L · limit 80.00 UG/LBack in compliance
  13. 2014-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 212.00 UG/L · limit 80.00 UG/LBack in compliance
  14. 2014-07-31Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  15. 2014-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 222.00 UG/L · limit 80.00 UG/LBack in compliance
  16. 2014-05-01Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  17. 2014-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 296.00 UG/L · limit 80.00 UG/LBack in compliance
  18. 2014-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 300.00 UG/L · limit 80.00 UG/LBack in compliance
  19. 2013-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 229.00 UG/L · limit 80.00 UG/LBack in compliance
  20. 2013-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  21. 2013-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  22. 2013-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 172.00 UG/L · limit 80.00 UG/LBack in compliance
  23. 2012-06-29Public NoticePN Violation for NPDWR ViolationBack in compliance
  24. 2011-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  25. 2011-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  26. 2010-07-02Dbp Stage 2Failure Submit IDSE/Subpart V Plan RptBack in compliance
  27. 2010-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  28. 2010-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  29. 2010-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  30. 2010-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  31. 2009-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  32. 2009-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  33. 2009-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  34. 2004-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served1,218
Service connections406
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityDubach
EPA ZIP on file71235

Areas served

  • Lincoln Parish

Reading this record

Dubach Water System is a community water system that draws from groundwater and serves about 1,218 people in Dubach, Louisiana. 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.