Community Water System · PWSID LA1073061

Hidden Oaks Subdivision Ws

Serves 438 peopleGroundwater PurchasedOwner: PrivateWest Monroe, Louisiana
Nothing open right now.

On record since 1991: 40 violations. 25 over the limit · 12 missed or late tests · 3 notices or reports. Most recent began 2022-10-01.

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

25Over the limit
0Treatment lapse
12Missed or late test
3Notice or report

More violations on record than 90% 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

1991 · Over the limit: 11995200020052010 · Missed or late test: 22010 · Missed or late test: 220102011 · Missed or late test: 22011 · Missed or late test: 22012 · Missed or late test: 22012 · Missed or late test: 22014 · Missed or late test: 22014 · Missed or late test: 22014 · Notice or report: 12015 · Over the limit: 12015 · Missed or late test: 22015 · Missed or late test: 220152016 · Over the limit: 52016 · Over the limit: 52016 · Over the limit: 52016 · Over the limit: 52016 · Over the limit: 52016 · Missed or late test: 22016 · Missed or late test: 22017 · Over the limit: 32017 · Over the limit: 32017 · Over the limit: 32017 · Notice or report: 22017 · Notice or report: 22018 · Over the limit: 72018 · Over the limit: 72018 · Over the limit: 72018 · Over the limit: 72018 · Over the limit: 72018 · Over the limit: 72018 · Over the limit: 72019 · Over the limit: 42019 · Over the limit: 42019 · Over the limit: 42019 · Over the limit: 420202022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
63% over the limit · 2530% missed or late test · 128% notice or report · 3

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)Total Haloacetic Acids (HAA5)2022-10-01 · Trihalomethanes (TTHM): measured 0.0880 MG/L vs limit 0.0800 MG/L (1.1×)2022-07-01 · Trihalomethanes (TTHM): measured 0.0920 MG/L vs limit 0.0800 MG/L (1.1×)2022-04-01 · Trihalomethanes (TTHM): measured 0.1010 MG/L vs limit 0.0800 MG/L (1.3×)2022-01-01 · Trihalomethanes (TTHM): measured 0.0960 MG/L vs limit 0.0800 MG/L (1.2×)2019-07-01 · Trihalomethanes (TTHM): measured 0.0900 MG/L vs limit 0.0800 MG/L (1.1×)2019-04-01 · Trihalomethanes (TTHM): measured 0.1740 MG/L vs limit 0.0800 MG/L (2.2×)2019-01-01 · Trihalomethanes (TTHM): measured 0.2580 MG/L vs limit 0.0800 MG/L (3.2×)2019-01-01 · Total Haloacetic Acids (HAA5): measured 0.0650 MG/L vs limit 0.0600 MG/L (1.1×)2018-10-01 · Trihalomethanes (TTHM): measured 0.3610 MG/L vs limit 0.0800 MG/L (4.5×)2018-10-01 · Total Haloacetic Acids (HAA5): measured 0.0790 MG/L vs limit 0.0600 MG/L (1.3×)2018-07-01 · Trihalomethanes (TTHM): measured 373.00 UG/L vs limit 80.00 UG/L (4.7×)2018-07-01 · Total Haloacetic Acids (HAA5): measured 68.00 UG/L vs limit 60.00 UG/L (1.1×)2018-04-01 · Trihalomethanes (TTHM): measured 398.00 UG/L vs limit 80.00 UG/L (5.0×)2018-04-01 · Total Haloacetic Acids (HAA5): measured 68.00 UG/L vs limit 60.00 UG/L (1.1×)2018-01-01 · Trihalomethanes (TTHM): measured 362.00 UG/L vs limit 80.00 UG/L (4.5×)2017-10-01 · Trihalomethanes (TTHM): measured 272.00 UG/L vs limit 80.00 UG/L (3.4×)2017-07-01 · Trihalomethanes (TTHM): measured 199.00 UG/L vs limit 80.00 UG/L (2.5×)2017-04-01 · Trihalomethanes (TTHM): measured 97.00 UG/L vs limit 80.00 UG/L (1.2×)2016-10-01 · Total Haloacetic Acids (HAA5): measured 65.00 UG/L vs limit 60.00 UG/L (1.1×)2016-07-01 · Trihalomethanes (TTHM): measured 121.00 UG/L vs limit 80.00 UG/L (1.5×)2016-07-01 · Total Haloacetic Acids (HAA5): measured 85.00 UG/L vs limit 60.00 UG/L (1.4×)2016-04-01 · Trihalomethanes (TTHM): measured 156.00 UG/L vs limit 80.00 UG/L (1.9×)2016-04-01 · Total Haloacetic Acids (HAA5): measured 98.00 UG/L vs limit 60.00 UG/L (1.6×)2015-10-01 · Trihalomethanes (TTHM): measured 94.00 UG/L vs limit 80.00 UG/L (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
0 ppb
0 ppb

Every violation on record

  1. 2022-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0880 MG/L · limit 0.0800 MG/LBack in compliance
  2. 2022-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0920 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  3. 2022-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1010 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  4. 2022-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0960 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  5. 2019-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0900 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  6. 2019-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1740 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  7. 2019-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.2580 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  8. 2019-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0650 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  9. 2018-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.3610 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  10. 2018-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0790 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  11. 2018-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 373.00 UG/L · limit 80.00 UG/LPeriod ended · no return to compliance on file
  12. 2018-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 68.00 UG/L · limit 60.00 UG/LPeriod ended · no return to compliance on file
  13. 2018-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 398.00 UG/L · limit 80.00 UG/LPeriod ended · no return to compliance on file
  14. 2018-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 68.00 UG/L · limit 60.00 UG/LPeriod ended · no return to compliance on file
  15. 2018-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 362.00 UG/L · limit 80.00 UG/LPeriod ended · no return to compliance on file
  16. 2017-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 272.00 UG/L · limit 80.00 UG/LPeriod ended · no return to compliance on file
  17. 2017-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  18. 2017-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  19. 2017-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 199.00 UG/L · limit 80.00 UG/LPeriod ended · no return to compliance on file
  20. 2017-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 97.00 UG/L · limit 80.00 UG/LPeriod ended · no return to compliance on file
  21. 2016-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 65.00 UG/L · limit 60.00 UG/LPeriod ended · no return to compliance on file
  22. 2016-07-31Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  23. 2016-07-31Total Haloacetic Acids (HAA5)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  24. 2016-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 121.00 UG/L · limit 80.00 UG/LPeriod ended · no return to compliance on file
  25. 2016-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 85.00 UG/L · limit 60.00 UG/LPeriod ended · no return to compliance on file
Show the other 15 entries
  1. 2016-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 156.00 UG/L · limit 80.00 UG/LPeriod ended · no return to compliance on file
  2. 2016-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 98.00 UG/L · limit 60.00 UG/LPeriod ended · no return to compliance on file
  3. 2015-12-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  4. 2015-12-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  5. 2015-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 94.00 UG/L · limit 80.00 UG/LBack in compliance
  6. 2014-12-08Public NoticePN Violation for NPDWR ViolationBack in compliance
  7. 2014-08-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  8. 2014-07-01ChloramineMonitoring and Reporting (DBP)Back in compliance
  9. 2012-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  10. 2012-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  11. 2011-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  12. 2011-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  13. 2010-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  14. 2010-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  15. 1991-06-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance

System details

Population served438
Service connections146
Water sourceGroundwater Purchased
System typeCommunity Water System
OwnerPrivate
StatusActive
CityWest Monroe
EPA ZIP on file71294

Areas served

  • Ouachita Parish

Reading this record

Hidden Oaks Subdivision Ws is a community water system that draws from groundwater purchased and serves about 438 people in West 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.