Community Water System · PWSID LA1073040

Prairie Road Water District

Serves 2,598 peopleGroundwaterOwner: PrivateMonroe, Louisiana
1 open treatment violation.

Open for: Groundwater Rule. EPA counts treatment-technique violations as health-based: a required protective step was not done. It is not a measurement of contamination.

On record since 2000: 50 violations. 27 over the limit · 15 treatment lapses · 2 missed or late tests · 6 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.

27Over the limit
15Treatment lapse1 open
2Missed or late test
6Notice or report

More violations on record than 93% 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

2000 · Notice or report: 120002001 · Notice or report: 12005 · Over the limit: 42005 · Over the limit: 42005 · Over the limit: 42005 · Over the limit: 42005 · Notice or report: 120052006 · Over the limit: 42006 · Over the limit: 42006 · Over the limit: 42006 · Over the limit: 42007 · Over the limit: 42007 · Over the limit: 42007 · Over the limit: 42007 · Over the limit: 42008 · Over the limit: 42008 · Over the limit: 42008 · Over the limit: 42008 · Over the limit: 42009 · Over the limit: 12010 · Over the limit: 12010 · Missed or late test: 120102011 · Over the limit: 12014 · Missed or late test: 120152017 · Over the limit: 12019 · Treatment lapse: 22019 · Treatment lapse: 22020 · Treatment lapse: 62020 · Treatment lapse: 62020 · Treatment lapse: 62020 · Treatment lapse: 62020 · Treatment lapse: 62020 · Treatment lapse: 62020 · Notice or report: 120202022 · Over the limit: 32022 · Over the limit: 32022 · Over the limit: 32023 · Over the limit: 22023 · Over the limit: 22023 · Treatment lapse: 72023 · Treatment lapse: 72023 · Treatment lapse: 72023 · Treatment lapse: 72023 · Treatment lapse: 72023 · Treatment lapse: 72023 · Treatment lapse: 72023 · Notice or report: 22023 · Notice or report: 22025 · Over the limit: 22025 · Over the limit: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
54% over the limit · 2730% treatment lapse · 154% missed or late test · 212% notice or report · 6

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 0.1040 MG/L vs limit 0.0800 MG/L (1.3×)2025-04-01 · Trihalomethanes (TTHM): measured 0.0890 MG/L vs limit 0.0800 MG/L (1.1×)2023-04-01 · Trihalomethanes (TTHM): measured 0.0880 MG/L vs limit 0.0800 MG/L (1.1×)2023-01-01 · Trihalomethanes (TTHM): measured 0.1000 MG/L vs limit 0.0800 MG/L (1.2×)2022-10-01 · Trihalomethanes (TTHM): measured 0.1090 MG/L vs limit 0.0800 MG/L (1.4×)2022-07-01 · Trihalomethanes (TTHM): measured 0.0990 MG/L vs limit 0.0800 MG/L (1.2×)2022-04-01 · Trihalomethanes (TTHM): measured 0.0920 MG/L vs limit 0.0800 MG/L (1.1×)2017-10-01 · Trihalomethanes (TTHM): measured 81.00 UG/L vs limit 80.00 UG/L (1.0×)2011-10-01 · Trihalomethanes (TTHM): measured 98.00 UG/L vs limit 80.00 UG/L (1.2×)2010-10-01 · Trihalomethanes (TTHM): measured 145.00 UG/L vs limit 80.00 UG/L (1.8×)2009-10-01 · Trihalomethanes (TTHM): measured 190.00 UG/L vs limit 80.00 UG/L (2.4×)2008-07-01 · Trihalomethanes (TTHM): measured 192.00 UG/L vs limit 80.00 UG/L (2.4×)2008-04-01 · Trihalomethanes (TTHM): measured 200.00 UG/L vs limit 80.00 UG/L (2.5×)2008-01-01 · Trihalomethanes (TTHM): measured 207.00 UG/L vs limit 80.00 UG/L (2.6×)2007-10-01 · Trihalomethanes (TTHM): measured 201.00 UG/L vs limit 80.00 UG/L (2.5×)2007-07-01 · Trihalomethanes (TTHM): measured 212.00 UG/L vs limit 80.00 UG/L (2.6×)2007-04-01 · Trihalomethanes (TTHM): measured 202.00 UG/L vs limit 80.00 UG/L (2.5×)2007-01-01 · Trihalomethanes (TTHM): measured 188.00 UG/L vs limit 80.00 UG/L (2.4×)2006-10-01 · Trihalomethanes (TTHM): measured 189.00 UG/L vs limit 80.00 UG/L (2.4×)2006-07-01 · Trihalomethanes (TTHM): measured 185.00 UG/L vs limit 80.00 UG/L (2.3×)2006-04-01 · Trihalomethanes (TTHM): measured 170.00 UG/L vs limit 80.00 UG/L (2.1×)2006-01-01 · Trihalomethanes (TTHM): measured 171.00 UG/L vs limit 80.00 UG/L (2.1×)2005-10-01 · Trihalomethanes (TTHM): measured 167.00 UG/L vs limit 80.00 UG/L (2.1×)2005-07-01 · Trihalomethanes (TTHM): measured 155.00 UG/L vs limit 80.00 UG/L (1.9×)2005-04-01 · Trihalomethanes (TTHM): measured 188.00 vs limit 80.00 (2.4×)2005-01-01 · Trihalomethanes (TTHM): measured 97.00 vs limit 80.00 (1.2×)
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

1 ppb
1 ppb
1 ppb

Open now (1)

  1. 2019-06-24Groundwater RuleFailure To Address DeficiencyOpen

Every violation on record

  1. 2025-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1040 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  2. 2025-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0890 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  3. 2023-07-21Public NoticePN Violation for NPDWR ViolationBack in compliance
  4. 2023-07-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  5. 2023-06-02Groundwater Rule ×7Failure To Address DeficiencyBack in compliance
  6. 2023-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0880 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  7. 2023-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1000 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  8. 2022-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1090 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  9. 2022-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0990 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  10. 2022-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0920 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  11. 2020-07-23Public NoticePN Violation for NPDWR ViolationBack in compliance
  12. 2020-06-03Groundwater Rule ×6Failure To Address DeficiencyBack in compliance
  13. 2019-06-24Groundwater RuleFailure To Address DeficiencyOpen
  14. 2019-06-24Groundwater RuleFailure To Address DeficiencyBack in compliance
  15. 2017-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 81.00 UG/L · limit 80.00 UG/LBack in compliance
  16. 2014-07-31Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  17. 2011-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 98.00 UG/L · limit 80.00 UG/LBack in compliance
  18. 2010-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 145.00 UG/L · limit 80.00 UG/LBack in compliance
  19. 2010-07-02Dbp Stage 2Failure Submit IDSE/Subpart V Plan RptBack in compliance
  20. 2009-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 190.00 UG/L · limit 80.00 UG/LBack in compliance
  21. 2008-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 203.00 UG/LBack in compliance
  22. 2008-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 192.00 UG/L · limit 80.00 UG/LBack in compliance
  23. 2008-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 200.00 UG/L · limit 80.00 UG/LBack in compliance
  24. 2008-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 207.00 UG/L · limit 80.00 UG/LBack in compliance
  25. 2007-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 201.00 UG/L · limit 80.00 UG/LBack in compliance
Show the other 14 entries
  1. 2007-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 212.00 UG/L · limit 80.00 UG/LBack in compliance
  2. 2007-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 202.00 UG/L · limit 80.00 UG/LBack in compliance
  3. 2007-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 188.00 UG/L · limit 80.00 UG/LBack in compliance
  4. 2006-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 189.00 UG/L · limit 80.00 UG/LBack in compliance
  5. 2006-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 185.00 UG/L · limit 80.00 UG/LBack in compliance
  6. 2006-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 170.00 UG/L · limit 80.00 UG/LBack in compliance
  7. 2006-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 171.00 UG/L · limit 80.00 UG/LBack in compliance
  8. 2005-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 167.00 UG/L · limit 80.00 UG/LBack in compliance
  9. 2005-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 155.00 UG/L · limit 80.00 UG/LBack in compliance
  10. 2005-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  11. 2005-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 188.00 · limit 80.00 Back in compliance
  12. 2005-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 97.00 · limit 80.00 Back in compliance
  13. 2001-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  14. 2000-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served2,598
Service connections866
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityMonroe
EPA ZIP on file71202

Areas served

  • Ouachita Parish

Reading this record

Prairie Road Water District is a community water system that draws from groundwater and serves about 2,598 people in Monroe, 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.