Community Water System · PWSID PA1150108

Kennett Square Mun Water Works

Serves 6,328 peopleSurface Water PurchasedOwner: Local GovernmentKennett Square, Pennsylvania
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 2003: 156 violations. 2 treatment lapses · 86 missed or late tests · 68 notices or reports. Most recent began 2025-07-01.

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
2Treatment lapse
86Missed or late test1 open
68Notice or report

More violations on record than 97% of active water systems in Pennsylvania. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2003 · Notice or report: 12004 · Notice or report: 22005 · Notice or report: 1200520102015 · Missed or late test: 120152016 · Missed or late test: 42017 · Missed or late test: 12017 · Notice or report: 12018 · Notice or report: 12020 · Treatment lapse: 22020 · Missed or late test: 42020 · Notice or report: 220202021 · Missed or late test: 52021 · Notice or report: 22022 · Missed or late test: 462022 · Missed or late test: 462022 · Missed or late test: 462022 · Missed or late test: 462022 · Missed or late test: 462022 · Missed or late test: 462022 · Missed or late test: 462022 · Missed or late test: 462022 · Missed or late test: 462022 · Missed or late test: 462022 · Notice or report: 92022 · Notice or report: 92023 · Missed or late test: 172023 · Missed or late test: 172023 · Missed or late test: 172023 · Missed or late test: 172023 · Notice or report: 12024 · Notice or report: 462024 · Notice or report: 462024 · Notice or report: 462024 · Notice or report: 462024 · Notice or report: 462024 · Notice or report: 462024 · Notice or report: 462024 · Notice or report: 462024 · Notice or report: 462024 · Notice or report: 462025 · Missed or late test: 82025 · Missed or late test: 82025 · Notice or report: 22025
One square ≈ 5 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
1% treatment lapse · 255% missed or late test · 8644% notice or report · 68

Across Pennsylvania, 71% 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 4 results on file · action level 15 ppb

0 ppb
0 ppb
0 ppb
0 ppb

Open now (1)

  1. 2023-01-01Lead and Copper RuleLead Consumer NoticeOpen

Every violation on record

  1. 2025-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  2. 2025-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  3. 2025-05-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  4. 2025-04-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Period ended · no return to compliance on file
  5. 2025-03-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Period ended · no return to compliance on file
  6. 2025-01-11Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  7. 2025-01-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Period ended · no return to compliance on file
  8. 2025-01-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  9. 2025-01-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  10. 2024-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  11. 2024-01-11Public Notice ×45PN Violation for NPDWR ViolationBack in compliance
  12. 2023-10-01Nitrite ×2Monitoring, RegularBack in compliance
  13. 2023-10-01Nitrate ×2Monitoring, RegularBack in compliance
  14. 2023-10-01Combined UraniumMonitoring, RegularBack in compliance
  15. 2023-10-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  16. 2023-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  17. 2023-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  18. 2023-07-11Public NoticePN Violation for NPDWR ViolationBack in compliance
  19. 2023-04-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  20. 2023-04-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  21. 2023-01-01Lead and Copper RuleLead Consumer NoticeOpen
  22. 2023-01-01Nitrite ×2Monitoring, RegularBack in compliance
  23. 2023-01-01Nitrate ×2Monitoring, RegularBack in compliance
  24. 2023-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  25. 2023-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
Show the other 57 entries
  1. 2022-12-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  2. 2022-10-01Nitrite ×2Monitoring, RegularBack in compliance
  3. 2022-10-01Nitrate ×2Monitoring, RegularBack in compliance
  4. 2022-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  5. 2022-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  6. 2022-06-11Public NoticePN Violation for NPDWR ViolationBack in compliance
  7. 2022-05-11Public NoticePN Violation for NPDWR ViolationBack in compliance
  8. 2022-04-11Public NoticePN Violation for NPDWR ViolationBack in compliance
  9. 2022-04-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  10. 2022-01-11Public Notice ×4PN Violation for NPDWR ViolationBack in compliance
  11. 2022-01-01Styrene ×2Monitoring, RegularBack in compliance
  12. 2022-01-01Ethylbenzene ×2Monitoring, RegularBack in compliance
  13. 2022-01-01Toluene ×2Monitoring, RegularBack in compliance
  14. 2022-01-01Benzene ×2Monitoring, RegularBack in compliance
  15. 2022-01-01Chlorobenzene ×2Monitoring, RegularBack in compliance
  16. 2022-01-01Tetrachloroethylene ×2Monitoring, RegularBack in compliance
  17. 2022-01-011,1,2-Trichloroethane ×2Monitoring, RegularBack in compliance
  18. 2022-01-01Trichloroethylene ×2Monitoring, RegularBack in compliance
  19. 2022-01-011,2-Dichloropropane ×2Monitoring, RegularBack in compliance
  20. 2022-01-01Carbon tetrachloride ×2Monitoring, RegularBack in compliance
  21. 2022-01-011,1,1-Trichloroethane ×2Monitoring, RegularBack in compliance
  22. 2022-01-011,2-Dichloroethane ×2Monitoring, RegularBack in compliance
  23. 2022-01-01trans-1,2-Dichloroethylene ×2Monitoring, RegularBack in compliance
  24. 2022-01-011,1-Dichloroethylene ×2Monitoring, RegularBack in compliance
  25. 2022-01-01p-Dichlorobenzene ×2Monitoring, RegularBack in compliance
  26. 2022-01-01o-Dichlorobenzene ×2Monitoring, RegularBack in compliance
  27. 2022-01-01Dichloromethane ×2Monitoring, RegularBack in compliance
  28. 2022-01-01Xylenes, Total ×2Monitoring, RegularBack in compliance
  29. 2022-01-01cis-1,2-Dichloroethylene ×2Monitoring, RegularBack in compliance
  30. 2022-01-011,2,4-Trichlorobenzene ×2Monitoring, RegularBack in compliance
  31. 2021-10-01Combined UraniumMonitoring, RegularBack in compliance
  32. 2021-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  33. 2021-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  34. 2021-05-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  35. 2021-04-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  36. 2021-03-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  37. 2021-02-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  38. 2020-12-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  39. 2020-10-01Radium-228Monitoring, RegularBack in compliance
  40. 2020-10-01Radium-226Monitoring, RegularBack in compliance
  41. 2020-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  42. 2020-08-13Public NoticePN Violation for NPDWR ViolationBack in compliance
  43. 2020-08-01Groundwater RuleTreatment Technique (SWTR and GWR)Back in compliance
  44. 2020-06-13Public NoticePN Violation for NPDWR ViolationBack in compliance
  45. 2020-06-01Groundwater RuleTreatment Technique (SWTR and GWR)Back in compliance
  46. 2018-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  47. 2017-06-11Public NoticePN Violation for NPDWR ViolationBack in compliance
  48. 2017-05-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  49. 2016-08-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  50. 2016-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  51. 2016-05-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  52. 2016-04-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  53. 2015-12-01Groundwater RuleMonitoring of Treatment (SWTR-Unfilt/GWR)Back in compliance
  54. 2005-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  55. 2004-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  56. 2004-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  57. 2003-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance

System details

Population served6,328
Service connections1,885
Water sourceSurface Water Purchased
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityKennett Square
EPA ZIP on file19348

Areas served

  • Chester County

Reading this record

Kennett Square Mun Water Works is a community water system that draws from surface water purchased and serves about 6,328 people in Kennett Square, Pennsylvania. 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.