Community Water System · PWSID LA1031014

South Mansfield Water System

Serves 933 peopleGroundwaterOwner: Local GovernmentMansfield, Louisiana
3 open treatment violations.

Open for: Revised Total Coliform Rule, 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 2008: 24 violations. 12 treatment lapses · 6 missed or late tests · 6 notices or reports. Most recent began 2025-07-02.

None of them is a measurement of contaminated water.

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

0Over the limit
12Treatment lapse3 open
6Missed or late test
6Notice or report2 open

More violations on record than 81% 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

20052008 · Missed or late test: 12010 · Missed or late test: 32010 · Missed or late test: 32010 · Missed or late test: 320102015 · Missed or late test: 22015 · Missed or late test: 220152019 · Treatment lapse: 120202021 · Treatment lapse: 92021 · Treatment lapse: 92021 · Treatment lapse: 92021 · Treatment lapse: 92021 · Treatment lapse: 92021 · Treatment lapse: 92021 · Treatment lapse: 92021 · Treatment lapse: 92021 · Treatment lapse: 92021 · Notice or report: 22021 · Notice or report: 22022 · Notice or report: 12024 · Treatment lapse: 22024 · Treatment lapse: 22024 · Notice or report: 12025 · Notice or report: 22025 · Notice or report: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
50% treatment lapse · 1225% missed or late test · 625% notice or report · 6

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

What you can do

  • Total Coliform Bacteria: If your water system has coliform violations, consider boiling water or using bottled water until the system confirms the issue is resolved. Contact your water provider for their latest test results and any boil-water advisories.

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

2 ppb
1 ppb
0 ppb

Open now (5)

  1. 2025-07-02Lead service line inventoryRPTOpen
  2. 2025-01-24Public NoticePN Violation for NPDWR ViolationOpen
  3. 2024-12-07Revised Total Coliform RuleTTOpen
  4. 2021-07-30Groundwater RuleFailure To Address DeficiencyOpen
  5. 2019-02-02Groundwater RuleFailure To Address DeficiencyOpen

Every violation on record

  1. 2025-07-02Lead service line inventoryRPTOpen
  2. 2025-01-24Public NoticePN Violation for NPDWR ViolationOpen
  3. 2024-12-07Revised Total Coliform RuleTTOpen
  4. 2024-10-17Lead service line inventoryTTBack in compliance
  5. 2024-10-17Lead service line inventoryRPTBack in compliance
  6. 2022-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  7. 2021-09-24Public NoticePN Violation for NPDWR ViolationBack in compliance
  8. 2021-09-07Public NoticePN Violation for NPDWR ViolationBack in compliance
  9. 2021-07-30Groundwater RuleFailure To Address DeficiencyOpen
  10. 2021-07-30Groundwater Rule ×8Failure To Address DeficiencyBack in compliance
  11. 2019-02-02Groundwater RuleFailure To Address DeficiencyOpen
  12. 2015-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  13. 2015-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  14. 2010-07-02Dbp Stage 2Failure Submit IDSE/Subpart V Plan RptBack in compliance
  15. 2010-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  16. 2010-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  17. 2008-04-01Dbp Stage 2Monitoring, Routine (IDSE)Back in compliance

System details

Population served933
Service connections311
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityMansfield
EPA ZIP on file71052

Areas served

  • De Soto Parish

Reading this record

South Mansfield Water System is a community water system that draws from groundwater and serves about 933 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.