Community Water System · PWSID LA1031009

Mansfield Water System

Serves 7,512 peopleSurface WaterOwner: Local GovernmentMansfield, Louisiana
Nothing open right now.

On record since 2005: 30 violations. 14 over the limit · 13 treatment lapses · 3 missed or late tests. Most recent began 2025-03-01.

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

14Over the limit
13Treatment lapse
3Missed or late test
0Notice or report

More violations on record than 85% 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

2005 · Missed or late test: 1200520102012 · Over the limit: 12014 · 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: 220152017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Treatment lapse: 22017 · Treatment lapse: 22018 · Over the limit: 120202023 · Over the limit: 22023 · Over the limit: 22024 · Over the limit: 22024 · Over the limit: 22024 · Treatment lapse: 82024 · Treatment lapse: 82024 · Treatment lapse: 82024 · Treatment lapse: 82024 · Treatment lapse: 82024 · Treatment lapse: 82024 · Treatment lapse: 82024 · Treatment lapse: 82025 · Treatment lapse: 32025 · Treatment lapse: 32025 · Treatment lapse: 32025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
47% over the limit · 1443% treatment lapse · 1310% missed or late test · 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)2024-04-01 · Trihalomethanes (TTHM): measured 0.1120 MG/L vs limit 0.0800 MG/L (1.4×)2024-01-01 · Trihalomethanes (TTHM): measured 0.1130 MG/L vs limit 0.0800 MG/L (1.4×)2023-10-01 · Trihalomethanes (TTHM): measured 0.1020 MG/L vs limit 0.0800 MG/L (1.3×)2023-07-01 · Trihalomethanes (TTHM): measured 0.0970 MG/L vs limit 0.0800 MG/L (1.2×)2018-04-01 · Trihalomethanes (TTHM): measured 84.00 UG/L vs limit 80.00 UG/L (1.1×)2017-10-01 · Trihalomethanes (TTHM): measured 96.00 UG/L vs limit 80.00 UG/L (1.2×)2017-07-01 · Trihalomethanes (TTHM): measured 91.00 UG/L vs limit 80.00 UG/L (1.1×)2017-04-01 · Trihalomethanes (TTHM): measured 85.00 UG/L vs limit 80.00 UG/L (1.1×)2017-01-01 · Trihalomethanes (TTHM): measured 86.00 UG/L vs limit 80.00 UG/L (1.1×)2014-07-01 · Total Haloacetic Acids (HAA5): measured 70.00 UG/L vs limit 60.00 UG/L (1.2×)2014-07-01 · Trihalomethanes (TTHM): measured 87.00 UG/L vs limit 80.00 UG/L (1.1×)2014-04-01 · Total Haloacetic Acids (HAA5): measured 63.00 UG/L vs limit 60.00 UG/L (1.1×)2014-04-01 · Trihalomethanes (TTHM): measured 87.00 UG/L vs limit 80.00 UG/L (1.1×)2012-07-01 · Trihalomethanes (TTHM): measured 90.30 UG/L vs limit 80.00 UG/L (1.1×)
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 9 results on file · action level 15 ppb

23 ppb
15 ppb
10 ppb
9 ppb
4 ppb
3 ppb
2 ppb
2 ppb
1 ppb

Copper, 90th percentile 4 results on file · action level 1.3 mg/L

4.1 mg/L
3.4 mg/L
3.3 mg/L
1.6 mg/L

Every violation on record

  1. 2025-03-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  2. 2025-02-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  3. 2025-01-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  4. 2024-11-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  5. 2024-11-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  6. 2024-10-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  7. 2024-08-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  8. 2024-07-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  9. 2024-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1120 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  10. 2024-03-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Back in compliance
  11. 2024-01-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Back in compliance
  12. 2024-01-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Back in compliance
  13. 2024-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1130 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  14. 2023-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1020 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  15. 2023-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0970 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  16. 2018-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 84.00 UG/L · limit 80.00 UG/LBack in compliance
  17. 2017-10-01Carbon, TotalTreatment Technique Precursor RemovalPeriod ended · no return to compliance on file
  18. 2017-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 96.00 UG/L · limit 80.00 UG/LBack in compliance
  19. 2017-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 91.00 UG/L · limit 80.00 UG/LBack in compliance
  20. 2017-07-01Carbon, TotalTreatment Technique Precursor RemovalBack in compliance
  21. 2017-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 85.00 UG/L · limit 80.00 UG/LBack in compliance
  22. 2017-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 86.00 UG/L · limit 80.00 UG/LBack in compliance
  23. 2014-07-31Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  24. 2014-07-31Total Haloacetic Acids (HAA5)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  25. 2014-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 70.00 UG/L · limit 60.00 UG/LBack in compliance
Show the other 5 entries
  1. 2014-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 87.00 UG/L · limit 80.00 UG/LBack in compliance
  2. 2014-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 63.00 UG/L · limit 60.00 UG/LBack in compliance
  3. 2014-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 87.00 UG/L · limit 80.00 UG/LBack in compliance
  4. 2012-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 90.30 UG/L · limit 80.00 UG/LBack in compliance
  5. 2005-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served7,512
Service connections2,504
Water sourceSurface Water
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityMansfield
EPA ZIP on file71052

Areas served

  • De Soto Parish

Reading this record

Mansfield Water System is a community water system that draws from surface water and serves about 7,512 people in Mansfield, 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.