Community Water System · PWSID NJ1106002

Mercer County Correctional Center

Serves 860 peopleGroundwaterOwner: Local GovernmentLambertville, New Jersey
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 2005: 76 violations. 3 treatment lapses · 63 missed or late tests · 10 notices or reports. Most recent began 2024-10-01.

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
3Treatment lapse
63Missed or late test1 open
10Notice or report

More violations on record than 98% of active water systems in New Jersey. 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: 1200520102011 · Notice or report: 12013 · Notice or report: 12014 · Notice or report: 12015 · Missed or late test: 42015 · Missed or late test: 42015 · Notice or report: 120152016 · Treatment lapse: 12016 · Missed or late test: 222016 · Missed or late test: 222016 · Missed or late test: 222016 · Missed or late test: 222016 · Missed or late test: 222016 · Missed or late test: 222016 · Missed or late test: 222016 · Missed or late test: 222016 · Missed or late test: 222016 · Missed or late test: 222016 · Missed or late test: 222017 · Treatment lapse: 12017 · Missed or late test: 42017 · Missed or late test: 42017 · Notice or report: 22018 · Missed or late test: 32018 · Missed or late test: 32019 · Missed or late test: 42019 · Missed or late test: 42020 · Notice or report: 120202021 · Missed or late test: 32021 · Missed or late test: 32022 · Treatment lapse: 12023 · Missed or late test: 212023 · Missed or late test: 212023 · Missed or late test: 212023 · Missed or late test: 212023 · Missed or late test: 212023 · Missed or late test: 212023 · Missed or late test: 212023 · Missed or late test: 212023 · Missed or late test: 212023 · Missed or late test: 212023 · Missed or late test: 212023 · Notice or report: 32023 · Notice or report: 32024 · Missed or late test: 12025
One square ≈ 2 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
4% treatment lapse · 383% missed or late test · 6313% notice or report · 10

Across New Jersey, 74% of violations are missed or late tests and 2% are water over a limit.

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 19 results on file · action level 15 ppb

21.7 ppb
14.5 ppb
12.3 ppb
11.1 ppb
9.5 ppb
8.5 ppb
7.8 ppb
6.5 ppb
6.3 ppb
5 ppb
4 ppb
2.7 ppb
2 ppb
1.9 ppb
1.6 ppb
1.6 ppb
1.3 ppb
0.91 ppb
0.65 ppb

Open now (1)

  1. 2021-09-09E. ColiMonitoring, Source Water (GWR)Open

Every violation on record

  1. 2024-10-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  2. 2023-07-20Public NoticePN Violation without NPDWR ViolationBack in compliance
  3. 2023-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  4. 2023-04-10Public NoticePN Violation without NPDWR ViolationBack in compliance
  5. 2023-01-01StyreneMonitoring, RegularPeriod ended · no return to compliance on file
  6. 2023-01-01EthylbenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  7. 2023-01-01TolueneMonitoring, RegularPeriod ended · no return to compliance on file
  8. 2023-01-01BenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  9. 2023-01-01ChlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  10. 2023-01-01TetrachloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  11. 2023-01-011,1,2-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  12. 2023-01-01TrichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  13. 2023-01-011,2-DichloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  14. 2023-01-01Carbon tetrachlorideMonitoring, RegularPeriod ended · no return to compliance on file
  15. 2023-01-011,1,1-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  16. 2023-01-011,2-DichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  17. 2023-01-01trans-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  18. 2023-01-011,1-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  19. 2023-01-01Vinyl chlorideMonitoring, RegularPeriod ended · no return to compliance on file
  20. 2023-01-01p-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  21. 2023-01-01o-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  22. 2023-01-01DichloromethaneMonitoring, RegularPeriod ended · no return to compliance on file
  23. 2023-01-01Xylenes, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  24. 2023-01-01cis-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  25. 2023-01-011,2,4-TrichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
Show the other 51 entries
  1. 2022-02-13Groundwater RuleFailure To Address ContaminationBack in compliance
  2. 2021-09-29Lead and Copper RuleLead Consumer NoticeBack in compliance
  3. 2021-09-09E. ColiMonitoring, Source Water (GWR)Open
  4. 2021-01-01NitrateMonitoring, RegularBack in compliance
  5. 2020-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  6. 2019-04-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  7. 2019-01-011, 2-Dibromo-3-ChloropropaneMonitoring, RegularBack in compliance
  8. 2019-01-01Ethylene DibromideMonitoring, RegularBack in compliance
  9. 2019-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  10. 2018-09-29Lead and Copper RuleLead Consumer NoticeBack in compliance
  11. 2018-04-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  12. 2018-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  13. 2017-10-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  14. 2017-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  15. 2017-08-08Lead and Copper RuleOCCT/SOWT Study/RecommendationBack in compliance
  16. 2017-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  17. 2017-05-11Revised Total Coliform RuleRPTBack in compliance
  18. 2017-01-11Revised Total Coliform RuleRPTBack in compliance
  19. 2017-01-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
  20. 2016-12-01Lead and Copper RulePublic EducationBack in compliance
  21. 2016-06-01Lead and Copper RuleWater Quality Parameter M/RPeriod ended · no return to compliance on file
  22. 2016-01-01StyreneMonitoring, RegularBack in compliance
  23. 2016-01-01EthylbenzeneMonitoring, RegularBack in compliance
  24. 2016-01-01TolueneMonitoring, RegularBack in compliance
  25. 2016-01-01BenzeneMonitoring, RegularBack in compliance
  26. 2016-01-01ChlorobenzeneMonitoring, RegularBack in compliance
  27. 2016-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
  28. 2016-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  29. 2016-01-01TrichloroethyleneMonitoring, RegularBack in compliance
  30. 2016-01-011,2-DichloropropaneMonitoring, RegularBack in compliance
  31. 2016-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
  32. 2016-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  33. 2016-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
  34. 2016-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  35. 2016-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  36. 2016-01-01Vinyl chlorideMonitoring, RegularBack in compliance
  37. 2016-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  38. 2016-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
  39. 2016-01-01DichloromethaneMonitoring, RegularBack in compliance
  40. 2016-01-01Xylenes, TotalMonitoring, RegularBack in compliance
  41. 2016-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  42. 2016-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  43. 2015-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  44. 2015-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  45. 2015-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  46. 2015-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  47. 2015-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  48. 2014-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  49. 2013-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  50. 2011-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  51. 2005-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served860
Service connections2
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityLambertville
EPA ZIP on file08530

Areas served

  • Mercer County

Reading this record

Mercer County Correctional Center is a community water system that draws from groundwater and serves about 860 people in Lambertville, New Jersey. 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.