Community Water System · PWSID LA1017023

Mooringsport Water System

Serves 999 peopleSurface Water PurchasedOwner: Local GovernmentMooringsport, Louisiana
1 open treatment violation.

Open for: Lead service line inventory. 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 1989: 84 violations. 55 over the limit · 1 treatment lapse · 18 missed or late tests · 10 notices or reports. Most recent began 2024-10-17.

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

55Over the limit
1Treatment lapse1 open
18Missed or late test
10Notice or report

More violations on record than 97% 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

1989 · Over the limit: 11990 · Over the limit: 11990199520002004 · Over the limit: 22005 · Over the limit: 62005 · Over the limit: 62005 · Over the limit: 620052006 · Over the limit: 22007 · Over the limit: 42007 · Over the limit: 42008 · Over the limit: 42008 · Over the limit: 42008 · Missed or late test: 42008 · Missed or late test: 42009 · Missed or late test: 82009 · Missed or late test: 82009 · Missed or late test: 82009 · Missed or late test: 82010 · Over the limit: 82010 · Over the limit: 82010 · Over the limit: 82010 · Over the limit: 820102011 · Over the limit: 62011 · Over the limit: 62011 · Over the limit: 62011 · Notice or report: 12012 · Over the limit: 72012 · Over the limit: 72012 · Over the limit: 72012 · Over the limit: 72013 · Over the limit: 52013 · Over the limit: 52013 · Over the limit: 52013 · Notice or report: 32013 · Notice or report: 32014 · Over the limit: 82014 · Over the limit: 82014 · Over the limit: 82014 · Over the limit: 82014 · Missed or late test: 42014 · Missed or late test: 42014 · Notice or report: 42014 · Notice or report: 42015 · Over the limit: 12015 · Missed or late test: 12015 · Notice or report: 1201520202024 · Treatment lapse: 12024 · Missed or late test: 12024 · Notice or report: 12025
One square ≈ 2 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
65% over the limit · 551% treatment lapse · 121% missed or late test · 1812% notice or report · 10

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×+Total Haloacetic Acids (HAA5)Trihalomethanes (TTHM)2015-01-01 · Total Haloacetic Acids (HAA5): measured 80.00 UG/L vs limit 60.00 UG/L (1.3×)2014-10-01 · Total Haloacetic Acids (HAA5): measured 184.00 UG/L vs limit 60.00 UG/L (3.1×)2014-10-01 · Trihalomethanes (TTHM): measured 98.00 UG/L vs limit 80.00 UG/L (1.2×)2014-07-01 · Total Haloacetic Acids (HAA5): measured 208.00 UG/L vs limit 60.00 UG/L (3.5×)2014-07-01 · Trihalomethanes (TTHM): measured 126.00 UG/L vs limit 80.00 UG/L (1.6×)2014-04-01 · Total Haloacetic Acids (HAA5): measured 186.00 UG/L vs limit 60.00 UG/L (3.1×)2014-04-01 · Trihalomethanes (TTHM): measured 134.00 UG/L vs limit 80.00 UG/L (1.7×)2014-01-01 · Trihalomethanes (TTHM): measured 120.00 UG/L vs limit 80.00 UG/L (1.5×)2014-01-01 · Total Haloacetic Acids (HAA5): measured 139.00 UG/L vs limit 60.00 UG/L (2.3×)2013-10-01 · Trihalomethanes (TTHM): measured 129.40 UG/L vs limit 80.00 UG/L (1.6×)2013-07-01 · Trihalomethanes (TTHM): measured 114.00 UG/L vs limit 80.00 UG/L (1.4×)2013-04-01 · Trihalomethanes (TTHM): measured 99.00 UG/L vs limit 80.00 UG/L (1.2×)2013-01-01 · Total Haloacetic Acids (HAA5): measured 98.00 UG/L vs limit 60.00 UG/L (1.6×)2013-01-01 · Trihalomethanes (TTHM): measured 137.00 UG/L vs limit 80.00 UG/L (1.7×)2012-10-01 · Total Haloacetic Acids (HAA5): measured 96.00 UG/L vs limit 60.00 UG/L (1.6×)2012-10-01 · Trihalomethanes (TTHM): measured 141.00 UG/L vs limit 80.00 UG/L (1.8×)2012-07-01 · Total Haloacetic Acids (HAA5): measured 78.00 UG/L vs limit 60.00 UG/L (1.3×)2012-07-01 · Trihalomethanes (TTHM): measured 148.00 UG/L vs limit 80.00 UG/L (1.9×)2012-04-01 · Total Haloacetic Acids (HAA5): measured 96.00 UG/L vs limit 60.00 UG/L (1.6×)2012-04-01 · Trihalomethanes (TTHM): measured 157.00 UG/L vs limit 80.00 UG/L (2.0×)2012-01-01 · Trihalomethanes (TTHM): measured 127.00 UG/L vs limit 80.00 UG/L (1.6×)2011-10-01 · Trihalomethanes (TTHM): measured 130.00 UG/L vs limit 80.00 UG/L (1.6×)2011-07-01 · Trihalomethanes (TTHM): measured 126.00 UG/L vs limit 80.00 UG/L (1.6×)2011-04-01 · Total Haloacetic Acids (HAA5): measured 82.00 UG/L vs limit 60.00 UG/L (1.4×)2011-04-01 · Trihalomethanes (TTHM): measured 172.00 UG/L vs limit 80.00 UG/L (2.1×)2011-01-01 · Total Haloacetic Acids (HAA5): measured 90.00 UG/L vs limit 80.00 UG/L (1.1×)2011-01-01 · Trihalomethanes (TTHM): measured 205.00 UG/L vs limit 80.00 UG/L (2.6×)2010-10-01 · Trihalomethanes (TTHM): measured 216.00 UG/L vs limit 80.00 UG/L (2.7×)2010-10-01 · Total Haloacetic Acids (HAA5): measured 111.00 UG/L vs limit 60.00 UG/L (1.9×)2010-07-01 · Total Haloacetic Acids (HAA5): measured 125.00 UG/L vs limit 60.00 UG/L (2.1×)2010-07-01 · Trihalomethanes (TTHM): measured 248.00 UG/L vs limit 80.00 UG/L (3.1×)2010-04-01 · Total Haloacetic Acids (HAA5): measured 98.00 MG/L vs limit 60.00 MG/L (1.6×)2010-04-01 · Trihalomethanes (TTHM): measured 202.00 MG/L vs limit 80.00 MG/L (2.5×)2010-01-01 · Total Haloacetic Acids (HAA5): measured 118.00 MG/L vs limit 60.00 MG/L (2.0×)2010-01-01 · Trihalomethanes (TTHM): measured 112.00 MG/L vs limit 80.00 MG/L (1.4×)2008-04-01 · Total Haloacetic Acids (HAA5): measured 74.00 UG/L vs limit 60.00 UG/L (1.2×)2008-04-01 · Trihalomethanes (TTHM): measured 151.00 UG/L vs limit 80.00 UG/L (1.9×)2008-01-01 · Total Haloacetic Acids (HAA5): measured 87.00 UG/L vs limit 60.00 UG/L (1.4×)2008-01-01 · Trihalomethanes (TTHM): measured 154.00 UG/L vs limit 80.00 UG/L (1.9×)2007-10-01 · Total Haloacetic Acids (HAA5): measured 78.00 UG/L vs limit 60.00 UG/L (1.3×)2007-10-01 · Trihalomethanes (TTHM): measured 137.00 UG/L vs limit 80.00 UG/L (1.7×)2007-07-01 · Total Haloacetic Acids (HAA5): measured 63.00 UG/L vs limit 60.00 UG/L (1.1×)2007-07-01 · Trihalomethanes (TTHM): measured 93.00 UG/L vs limit 80.00 UG/L (1.2×)2006-07-01 · Total Haloacetic Acids (HAA5): measured 61.00 UG/L vs limit 60.00 UG/L (1.0×)2006-04-01 · Total Haloacetic Acids (HAA5): measured 65.00 UG/L vs limit 60.00 UG/L (1.1×)2005-10-01 · Total Haloacetic Acids (HAA5): measured 82.00 UG/L vs limit 60.00 UG/L (1.4×)2005-07-01 · Total Haloacetic Acids (HAA5): measured 82.00 vs limit 60.00 (1.4×)2005-04-01 · Total Haloacetic Acids (HAA5): measured 126.00 vs limit 60.00 (2.1×)2005-04-01 · Trihalomethanes (TTHM): measured 100.00 vs limit 80.00 (1.2×)2005-01-01 · Total Haloacetic Acids (HAA5): measured 127.00 vs limit 60.00 (2.1×)2005-01-01 · Trihalomethanes (TTHM): measured 116.00 vs limit 80.00 (1.4×)2004-10-01 · Total Haloacetic Acids (HAA5): measured 134.00 vs limit 60.00 (2.2×)2004-10-01 · Trihalomethanes (TTHM): measured 108.00 vs limit 80.00 (1.4×)
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

9 ppb
7 ppb
1 ppb

Open now (1)

  1. 2024-10-17Lead service line inventoryTTOpen

Every violation on record

  1. 2024-10-17Lead service line inventoryTTOpen
  2. 2024-10-17Lead service line inventoryRPTBack in compliance
  3. 2024-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  4. 2015-05-02Public NoticePN Violation for NPDWR ViolationBack in compliance
  5. 2015-01-31Total Haloacetic Acids (HAA5)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  6. 2015-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 80.00 UG/L · limit 60.00 UG/LBack in compliance
  7. 2014-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 184.00 UG/L · limit 60.00 UG/LBack in compliance
  8. 2014-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 98.00 UG/L · limit 80.00 UG/LBack in compliance
  9. 2014-09-05Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  10. 2014-07-31Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  11. 2014-07-31Total Haloacetic Acids (HAA5)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  12. 2014-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 208.00 UG/L · limit 60.00 UG/LBack in compliance
  13. 2014-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 126.00 UG/L · limit 80.00 UG/LBack in compliance
  14. 2014-05-22Public NoticePN Violation for NPDWR ViolationBack in compliance
  15. 2014-05-01Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  16. 2014-05-01Total Haloacetic Acids (HAA5)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  17. 2014-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 186.00 UG/L · limit 60.00 UG/LBack in compliance
  18. 2014-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 134.00 UG/L · limit 80.00 UG/LBack in compliance
  19. 2014-02-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  20. 2014-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 120.00 UG/L · limit 80.00 UG/LBack in compliance
  21. 2014-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 139.00 UG/L · limit 60.00 UG/LBack in compliance
  22. 2013-11-20Public NoticePN Violation for NPDWR ViolationBack in compliance
  23. 2013-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 129.40 UG/L · limit 80.00 UG/LBack in compliance
  24. 2013-08-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  25. 2013-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 114.00 UG/L · limit 80.00 UG/LBack in compliance
Show the other 58 entries
  1. 2013-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 99.00 UG/L · limit 80.00 UG/LBack in compliance
  2. 2013-02-16Public NoticePN Violation for NPDWR ViolationBack in compliance
  3. 2013-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 98.00 UG/L · limit 60.00 UG/LBack in compliance
  4. 2013-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 137.00 UG/L · limit 80.00 UG/LBack in compliance
  5. 2012-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 96.00 UG/L · limit 60.00 UG/LBack in compliance
  6. 2012-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 141.00 UG/L · limit 80.00 UG/LBack in compliance
  7. 2012-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 78.00 UG/L · limit 60.00 UG/LBack in compliance
  8. 2012-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 148.00 UG/L · limit 80.00 UG/LBack in compliance
  9. 2012-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 96.00 UG/L · limit 60.00 UG/LBack in compliance
  10. 2012-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 157.00 UG/L · limit 80.00 UG/LBack in compliance
  11. 2012-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 127.00 UG/L · limit 80.00 UG/LBack in compliance
  12. 2011-12-02Public NoticePN Violation for NPDWR ViolationBack in compliance
  13. 2011-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 130.00 UG/L · limit 80.00 UG/LBack in compliance
  14. 2011-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 126.00 UG/L · limit 80.00 UG/LBack in compliance
  15. 2011-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 82.00 UG/L · limit 60.00 UG/LBack in compliance
  16. 2011-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 172.00 UG/L · limit 80.00 UG/LBack in compliance
  17. 2011-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 90.00 UG/L · limit 80.00 UG/LBack in compliance
  18. 2011-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 205.00 UG/L · limit 80.00 UG/LBack in compliance
  19. 2010-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 216.00 UG/L · limit 80.00 UG/LBack in compliance
  20. 2010-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 111.00 UG/L · limit 60.00 UG/LBack in compliance
  21. 2010-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 125.00 UG/L · limit 60.00 UG/LBack in compliance
  22. 2010-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 248.00 UG/L · limit 80.00 UG/LBack in compliance
  23. 2010-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 98.00 MG/L · limit 60.00 MG/LBack in compliance
  24. 2010-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 202.00 MG/L · limit 80.00 MG/LBack in compliance
  25. 2010-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 118.00 MG/L · limit 60.00 MG/LBack in compliance
  26. 2010-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 112.00 MG/L · limit 80.00 MG/LBack in compliance
  27. 2009-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  28. 2009-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  29. 2009-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  30. 2009-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  31. 2009-04-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  32. 2009-04-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  33. 2009-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  34. 2009-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  35. 2008-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  36. 2008-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  37. 2008-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  38. 2008-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  39. 2008-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 74.00 UG/L · limit 60.00 UG/LBack in compliance
  40. 2008-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 151.00 UG/L · limit 80.00 UG/LBack in compliance
  41. 2008-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 87.00 UG/L · limit 60.00 UG/LBack in compliance
  42. 2008-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 154.00 UG/L · limit 80.00 UG/LBack in compliance
  43. 2007-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 78.00 UG/L · limit 60.00 UG/LBack in compliance
  44. 2007-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 137.00 UG/L · limit 80.00 UG/LBack in compliance
  45. 2007-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 63.00 UG/L · limit 60.00 UG/LBack in compliance
  46. 2007-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 93.00 UG/L · limit 80.00 UG/LBack in compliance
  47. 2006-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 61.00 UG/L · limit 60.00 UG/LBack in compliance
  48. 2006-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 65.00 UG/L · limit 60.00 UG/LBack in compliance
  49. 2005-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 82.00 UG/L · limit 60.00 UG/LBack in compliance
  50. 2005-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 82.00 · limit 60.00 Back in compliance
  51. 2005-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 126.00 · limit 60.00 Back in compliance
  52. 2005-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 100.00 · limit 80.00 Back in compliance
  53. 2005-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 127.00 · limit 60.00 Back in compliance
  54. 2005-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 116.00 · limit 80.00 Back in compliance
  55. 2004-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 134.00 · limit 60.00 Back in compliance
  56. 2004-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 108.00 · limit 80.00 Back in compliance
  57. 1990-06-01Coliform (Pre-TCR)MCL, Averagemeasured 100.00 · limit 10.00 Back in compliance
  58. 1989-08-01Coliform (Pre-TCR)MCL, Averagemeasured 4.00 · limit 1.00 Back in compliance

System details

Population served999
Service connections333
Water sourceSurface Water Purchased
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityMooringsport
EPA ZIP on file71060

Areas served

  • Caddo Parish

Reading this record

Mooringsport Water System is a community water system that draws from surface water purchased and serves about 999 people in Mooringsport, 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.