Community Water System · PWSID NY5918395

Oakridge Water District

Serves 892 peopleGroundwaterOwner: Local GovernmentLagrangeville, New York
1 open treatment violation.

Open for: Lead and Copper 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 1994: 85 violations. 25 over the limit · 1 treatment lapse · 32 missed or late tests · 27 notices or reports. Most recent began 2025-07-01.

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

25Over the limit
1Treatment lapse1 open
32Missed or late test
27Notice or report

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

The record, year by year

1994 · Missed or late test: 11995200020052009 · Notice or report: 12010 · Missed or late test: 120102011 · Missed or late test: 120152016 · Over the limit: 12016 · Missed or late test: 12017 · Over the limit: 12017 · Notice or report: 120202021 · Over the limit: 92021 · Over the limit: 92021 · Over the limit: 92021 · Missed or late test: 12021 · Notice or report: 252021 · Notice or report: 252021 · Notice or report: 252021 · Notice or report: 252021 · Notice or report: 252021 · Notice or report: 252021 · Notice or report: 252021 · Notice or report: 252021 · Notice or report: 252022 · Over the limit: 52022 · Over the limit: 52022 · Missed or late test: 252022 · Missed or late test: 252022 · Missed or late test: 252022 · Missed or late test: 252022 · Missed or late test: 252022 · Missed or late test: 252022 · Missed or late test: 252022 · Missed or late test: 252022 · Missed or late test: 252023 · Over the limit: 32024 · Over the limit: 32024 · Missed or late test: 22025 · Over the limit: 32025 · Treatment lapse: 12025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
29% over the limit · 251% treatment lapse · 138% missed or late test · 3232% notice or report · 27

Across New York, 67% of violations are missed or late tests and 3% are water over a limit.

How far over the limit

at the limit2×5×10×100×+28052806Trihalomethanes (TTHM)2025-07-01 · 2805: measured 0.000011 MG/L vs limit 0.000010 MG/L (1.1×)2025-04-01 · 2805: measured 0.000014 MG/L vs limit 0.000010 MG/L (1.4×)2025-01-01 · 2805: measured 0.000013 MG/L vs limit 0.000010 MG/L (1.3×)2024-07-01 · 2806: measured 0.000011 MG/L vs limit 0.000010 MG/L (1.1×)2024-07-01 · 2805: measured 0.000015 MG/L vs limit 0.000010 MG/L (1.5×)2024-01-01 · 2805: measured 0.000014 MG/L vs limit 0.000010 MG/L (1.4×)2023-10-01 · 2805: measured 0.000015 MG/L vs limit 0.000010 MG/L (1.5×)2023-07-01 · 2805: measured 0.000014 MG/L vs limit 0.000010 MG/L (1.4×)2023-04-01 · 2805: measured 12.80 NG/L vs limit 10.00 NG/L (1.3×)2022-10-01 · 2806: measured 0.000010 NG/L vs limit 0.000010 NG/L (1.0×)2022-10-01 · 2805: measured 0.000012 NG/L vs limit 0.000010 NG/L (1.2×)2022-10-01 · 2805: measured 0.000013 NG/L vs limit 0.000010 NG/L (1.2×)2022-07-01 · 2805: measured 0.000012 MG/L vs limit 0.000010 MG/L (1.2×)2022-01-01 · 2805: measured 0.000013 MG/L vs limit 0.000010 MG/L (1.3×)2021-10-01 · 2806: measured 0.000011 MG/L vs limit 0.000010 MG/L (1.1×)2021-10-01 · 2805: measured 0.000014 MG/L vs limit 0.000010 MG/L (1.4×)2021-10-01 · 2806: measured 0.000011 MG/L vs limit 0.000010 MG/L (1.1×)2021-10-01 · 2806: measured 0.000011 MG/L vs limit 0.000010 MG/L (1.1×)2021-07-01 · 2805: measured 12.50 NG/L vs limit 10.00 NG/L (1.2×)2021-04-01 · 2806: measured 10.30 NG/L vs limit 10.00 NG/L (1.0×)2021-04-01 · 2805: measured 12.30 NG/L vs limit 10.00 NG/L (1.2×)2021-04-01 · 2805: measured 12.40 NG/L vs limit 10.00 NG/L (1.2×)2021-01-01 · 2805: measured 0.000015 MG/L vs limit 0.000010 MG/L (1.4×)2017-07-01 · Trihalomethanes (TTHM): measured 86.10 UG/L vs limit 80.00 UG/L (1.1×)2016-07-01 · Trihalomethanes (TTHM): measured 95.20 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.

What you can do

  • Lead: Run cold water for 30 seconds to 2 minutes before using it for drinking or cooking, especially after the water has been sitting for several hours. Use only cold water for cooking and baby formula. Consider a water filter certified to remove lead (look for NSF/ANSI Standard 53 certification). Have your water tested if you live in an older home.

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 8 results on file · action level 15 ppb

61.6 ppb
15.6 ppb
10.2 ppb
5.1 ppb
5 ppb
5 ppb
4.9 ppb
2.6 ppb

Open now (1)

  1. 2025-05-23Lead and Copper RulePublic EducationOpen

Every violation on record

  1. 2025-07-012805MCL, Averagemeasured 0.000011 MG/L · limit 0.000010 MG/LPeriod ended · no return to compliance on file
  2. 2025-05-23Lead and Copper RulePublic EducationOpen
  3. 2025-04-012805MCL, Averagemeasured 0.000014 MG/L · limit 0.000010 MG/LPeriod ended · no return to compliance on file
  4. 2025-01-012805MCL, Averagemeasured 0.000013 MG/L · limit 0.000010 MG/LPeriod ended · no return to compliance on file
  5. 2024-07-012806MCL, Averagemeasured 0.000011 MG/L · limit 0.000010 MG/LPeriod ended · no return to compliance on file
  6. 2024-07-012805MCL, Averagemeasured 0.000015 MG/L · limit 0.000010 MG/LPeriod ended · no return to compliance on file
  7. 2024-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  8. 2024-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  9. 2024-01-012805MCL, Averagemeasured 0.000014 MG/L · limit 0.000010 MG/LPeriod ended · no return to compliance on file
  10. 2023-10-012805MCL, Averagemeasured 0.000015 MG/L · limit 0.000010 MG/LPeriod ended · no return to compliance on file
  11. 2023-07-012805MCL, Averagemeasured 0.000014 MG/L · limit 0.000010 MG/LPeriod ended · no return to compliance on file
  12. 2023-04-012805MCL, Averagemeasured 12.80 NG/L · limit 10.00 NG/LPeriod ended · no return to compliance on file
  13. 2022-10-012806MCL, Averagemeasured 0.000010 NG/L · limit 0.000010 NG/LPeriod ended · no return to compliance on file
  14. 2022-10-012805 ×2MCL, Averagemeasured 0.000012 NG/L · limit 0.000010 NG/LPeriod ended · no return to compliance on file
  15. 2022-07-012805MCL, Averagemeasured 0.000012 MG/L · limit 0.000010 MG/LPeriod ended · no return to compliance on file
  16. 2022-04-012829Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  17. 2022-04-012828Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  18. 2022-04-012827Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  19. 2022-04-012826Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  20. 2022-04-012825Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  21. 2022-04-012824Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  22. 2022-04-012823Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  23. 2022-04-012822Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  24. 2022-04-012821Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  25. 2022-04-012820Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
Show the other 56 entries
  1. 2022-04-012819Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  2. 2022-04-012816Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  3. 2022-04-012815Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  4. 2022-04-012814Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  5. 2022-04-012813Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  6. 2022-04-012812Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  7. 2022-04-012809Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  8. 2022-04-012808Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  9. 2022-04-012807Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  10. 2022-04-012806Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  11. 2022-04-012805Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  12. 2022-04-012804Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  13. 2022-04-012803Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  14. 2022-04-012802Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  15. 2022-04-012801Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  16. 2022-01-012805MCL, Averagemeasured 0.000013 MG/L · limit 0.000010 MG/LPeriod ended · no return to compliance on file
  17. 2021-10-012806 ×3MCL, Averagemeasured 0.000011 MG/L · limit 0.000010 MG/LPeriod ended · no return to compliance on file
  18. 2021-10-012805MCL, Averagemeasured 0.000014 MG/L · limit 0.000010 MG/LPeriod ended · no return to compliance on file
  19. 2021-07-012805MCL, Averagemeasured 12.50 NG/L · limit 10.00 NG/LPeriod ended · no return to compliance on file
  20. 2021-04-012829Notification, StateBack in compliance
  21. 2021-04-012828Notification, StateBack in compliance
  22. 2021-04-012827Notification, StateBack in compliance
  23. 2021-04-012826Notification, StateBack in compliance
  24. 2021-04-012825Notification, StateBack in compliance
  25. 2021-04-012824Notification, StateBack in compliance
  26. 2021-04-012823Notification, StateBack in compliance
  27. 2021-04-012822Notification, StateBack in compliance
  28. 2021-04-012821Notification, StateBack in compliance
  29. 2021-04-012820Notification, StateBack in compliance
  30. 2021-04-012819Notification, StateBack in compliance
  31. 2021-04-012816Notification, StateBack in compliance
  32. 2021-04-012815Notification, StateBack in compliance
  33. 2021-04-012814Notification, StateBack in compliance
  34. 2021-04-012813Notification, StateBack in compliance
  35. 2021-04-012812Notification, StateBack in compliance
  36. 2021-04-012809Notification, StateBack in compliance
  37. 2021-04-012808Notification, StateBack in compliance
  38. 2021-04-012807Notification, StateBack in compliance
  39. 2021-04-012806Notification, StateBack in compliance
  40. 2021-04-012805Notification, StateBack in compliance
  41. 2021-04-012804Notification, StateBack in compliance
  42. 2021-04-012803Notification, StateBack in compliance
  43. 2021-04-012802Notification, StateBack in compliance
  44. 2021-04-012801Notification, StateBack in compliance
  45. 2021-04-012806Monitoring, Check/Repeat/ConfirmationPeriod ended · no return to compliance on file
  46. 2021-04-012806MCL, Averagemeasured 10.30 NG/L · limit 10.00 NG/LPeriod ended · no return to compliance on file
  47. 2021-04-012805 ×2MCL, Averagemeasured 12.30 NG/L · limit 10.00 NG/LPeriod ended · no return to compliance on file
  48. 2021-01-012805MCL, Averagemeasured 0.000015 MG/L · limit 0.000010 MG/LPeriod ended · no return to compliance on file
  49. 2017-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 86.10 UG/L · limit 80.00 UG/LBack in compliance
  50. 2017-01-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  51. 2016-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 95.20 UG/L · limit 80.00 UG/LBack in compliance
  52. 2016-05-01Revised Total Coliform RuleMONBack in compliance
  53. 2011-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  54. 2010-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  55. 2009-01-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  56. 1994-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance

System details

Population served892
Service connections58
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityLagrangeville
EPA ZIP on file12540

Areas served

  • Westchester County

Reading this record

Oakridge Water District is a community water system that draws from groundwater and serves about 892 people in Lagrangeville, New York. 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.