Community Water System · PWSID PR0004545

Aibonito La Plata

Serves 16,202 peopleSurface WaterOwner: Local GovernmentAibonito, Puerto Rico
Nothing open that measures the water, but 1 open testing or paperwork violation.

A missed test is not evidence of bad water. It also is not evidence of good water: for that period nobody checked.

On record since 1992: 108 violations. 12 over the limit · 1 treatment lapse · 92 missed or late tests · 3 notices or reports. Most recent began 2024-07-01.

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

12Over the limit
1Treatment lapse
92Missed or late test1 open
3Notice or report

More violations on record than 96% of active water systems in Puerto Rico. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

1992 · Missed or late test: 119952000200520102011 · Missed or late test: 12012 · Missed or late test: 12013 · Missed or late test: 12014 · Over the limit: 12014 · Notice or report: 12015 · Over the limit: 42015 · Missed or late test: 120152016 · Over the limit: 32016 · Treatment lapse: 12017 · Missed or late test: 212017 · Missed or late test: 212017 · Missed or late test: 212017 · Missed or late test: 212017 · Missed or late test: 212018 · Missed or late test: 62018 · Missed or late test: 62018 · Notice or report: 12020 · Over the limit: 12020 · Missed or late test: 12020 · Notice or report: 120202022 · Over the limit: 32024 · Missed or late test: 592024 · Missed or late test: 592024 · Missed or late test: 592024 · Missed or late test: 592024 · Missed or late test: 592024 · Missed or late test: 592024 · Missed or late test: 592024 · Missed or late test: 592024 · Missed or late test: 592024 · Missed or late test: 592024 · Missed or late test: 592024 · Missed or late test: 592025
One square ≈ 5 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
11% over the limit · 12<1% treatment lapse · 185% missed or late test · 923% notice or report · 3

Across Puerto Rico, 83% of violations are missed or late tests and 9% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Trihalomethanes (TTHM)2020-01-01 · Trihalomethanes (TTHM): measured 0.0810 MG/L vs limit 0.0800 MG/L (1.0×)2016-07-01 · Trihalomethanes (TTHM): measured 0.1040 MG/L vs limit 0.0800 MG/L (1.3×)2016-04-01 · Trihalomethanes (TTHM): measured 0.1090 MG/L vs limit 0.0800 MG/L (1.4×)2016-01-01 · Trihalomethanes (TTHM): measured 0.1240 MG/L vs limit 0.0800 MG/L (1.6×)2015-10-01 · Trihalomethanes (TTHM): measured 0.1240 MG/L vs limit 0.0800 MG/L (1.6×)2015-07-01 · Trihalomethanes (TTHM): measured 0.1080 MG/L vs limit 0.0800 MG/L (1.3×)2015-04-01 · Trihalomethanes (TTHM): measured 0.1060 MG/L vs limit 0.0800 MG/L (1.3×)2015-01-01 · Trihalomethanes (TTHM): measured 0.0930 MG/L vs limit 0.0800 MG/L (1.2×)2014-10-01 · Trihalomethanes (TTHM): measured 0.0840 MG/L vs limit 0.0800 MG/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.

Open now (1)

  1. 1992-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuOpen

Every violation on record

  1. 2024-07-01Chlordane ×2Monitoring, RegularBack in compliance
  2. 2024-07-01Ethylene Dibromide ×2Monitoring, RegularBack in compliance
  3. 2024-07-011, 2-Dibromo-3-Chloropropane ×2Monitoring, RegularBack in compliance
  4. 2024-07-01Total Polychlorinated Biphenyls (PCB) ×2Monitoring, RegularBack in compliance
  5. 2024-07-01Pentachlorophenol ×2Monitoring, RegularBack in compliance
  6. 2024-07-01Benzo(a)pyrene ×2Monitoring, RegularBack in compliance
  7. 2024-07-01Hexachlorobenzene ×2Monitoring, RegularBack in compliance
  8. 2024-07-012, 4, 5-Tp ×2Monitoring, RegularBack in compliance
  9. 2024-07-012, 4-D ×2Monitoring, RegularBack in compliance
  10. 2024-07-01Heptachlor epoxide ×2Monitoring, RegularBack in compliance
  11. 2024-07-01Heptachlor ×2Monitoring, RegularBack in compliance
  12. 2024-07-01Lasso ×2Monitoring, RegularBack in compliance
  13. 2024-07-01Atrazine ×2Monitoring, RegularBack in compliance
  14. 2024-07-01Carbofuran ×2Monitoring, RegularBack in compliance
  15. 2024-07-01Hexachlorocyclopentadiene ×2Monitoring, RegularBack in compliance
  16. 2024-07-01Dinoseb ×2Monitoring, RegularBack in compliance
  17. 2024-07-01Picloram ×2Monitoring, RegularBack in compliance
  18. 2024-07-01Di(2-ethylhexyl) phthalate ×2Monitoring, RegularBack in compliance
  19. 2024-07-01Simazine ×2Monitoring, RegularBack in compliance
  20. 2024-07-01Oxamyl ×2Monitoring, RegularBack in compliance
  21. 2024-07-01Di(2-ethylhexyl) adipate ×2Monitoring, RegularBack in compliance
  22. 2024-07-01Glyphosate ×2Monitoring, RegularBack in compliance
  23. 2024-07-01Endothall ×2Monitoring, RegularBack in compliance
  24. 2024-07-01Diquat ×2Monitoring, RegularBack in compliance
  25. 2024-07-01Dalapon ×2Monitoring, RegularBack in compliance
Show the other 54 entries
  1. 2024-07-01Toxaphene ×2Monitoring, RegularBack in compliance
  2. 2024-07-01Methoxychlor ×2Monitoring, RegularBack in compliance
  3. 2024-07-01Bhc-Gamma ×2Monitoring, RegularBack in compliance
  4. 2024-07-01Endrin ×2Monitoring, RegularBack in compliance
  5. 2024-01-01NitrateMonitoring, RegularBack in compliance
  6. 2022-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0710 MG/LBack in compliance
  7. 2022-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0870 MG/LBack in compliance
  8. 2022-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0830 MG/LBack in compliance
  9. 2020-07-01Revised Total Coliform RuleMONBack in compliance
  10. 2020-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  11. 2020-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0810 MG/L · limit 0.0800 MG/LBack in compliance
  12. 2018-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  13. 2018-04-01E. ColiMonitoring, Source Water (LT2)Back in compliance
  14. 2018-04-01CryptosporidiumMonitoring, Source Water (LT2)Back in compliance
  15. 2018-04-01TurbidityMonitoring, Source Water (LT2)Back in compliance
  16. 2018-01-01E. ColiMonitoring, Source Water (LT2)Back in compliance
  17. 2018-01-01CryptosporidiumMonitoring, Source Water (LT2)Back in compliance
  18. 2018-01-01TurbidityMonitoring, Source Water (LT2)Back in compliance
  19. 2017-01-01StyreneMonitoring, RegularBack in compliance
  20. 2017-01-01EthylbenzeneMonitoring, RegularBack in compliance
  21. 2017-01-01TolueneMonitoring, RegularBack in compliance
  22. 2017-01-01BenzeneMonitoring, RegularBack in compliance
  23. 2017-01-01ChlorobenzeneMonitoring, RegularBack in compliance
  24. 2017-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
  25. 2017-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  26. 2017-01-01TrichloroethyleneMonitoring, RegularBack in compliance
  27. 2017-01-011,2-DichloropropaneMonitoring, RegularBack in compliance
  28. 2017-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
  29. 2017-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  30. 2017-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
  31. 2017-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  32. 2017-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  33. 2017-01-01Vinyl chlorideMonitoring, RegularBack in compliance
  34. 2017-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  35. 2017-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
  36. 2017-01-01DichloromethaneMonitoring, RegularBack in compliance
  37. 2017-01-01Xylenes, TotalMonitoring, RegularBack in compliance
  38. 2017-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  39. 2017-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  40. 2016-11-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Back in compliance
  41. 2016-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1040 MG/L · limit 0.0800 MG/LBack in compliance
  42. 2016-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1090 MG/L · limit 0.0800 MG/LBack in compliance
  43. 2016-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1240 MG/L · limit 0.0800 MG/LBack in compliance
  44. 2015-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1240 MG/L · limit 0.0800 MG/LBack in compliance
  45. 2015-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1080 MG/L · limit 0.0800 MG/LBack in compliance
  46. 2015-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1060 MG/L · limit 0.0800 MG/LBack in compliance
  47. 2015-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  48. 2015-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0930 MG/L · limit 0.0800 MG/LBack in compliance
  49. 2014-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0840 MG/L · limit 0.0800 MG/LBack in compliance
  50. 2014-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  51. 2013-07-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  52. 2012-07-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  53. 2011-07-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  54. 1992-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuOpen

System details

Population served16,202
Service connections6,068
Water sourceSurface Water
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityAibonito
EPA ZIP on file00653

Areas served

  • Aibonito Municipio County

Reading this record

Aibonito La Plata is a community water system that draws from surface water and serves about 16,202 people in Aibonito, Puerto Rico. 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.