Community Water System · PWSID OR4100507

Mapleton Water District

Serves 600 peopleSurface WaterOwner: Local GovernmentMapleton, Oregon
Nothing open right now.

On record since 1994: 116 violations. 5 treatment lapses · 109 missed or late tests · 2 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
5Treatment lapse
109Missed or late test
2Notice or report

More violations on record than 98% of active water systems in Oregon. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

1994 · Treatment lapse: 11994 · Missed or late test: 11995 · Treatment lapse: 11995200020052008 · Missed or late test: 1201020152016 · Missed or late test: 72016 · Missed or late test: 72016 · Missed or late test: 72017 · Missed or late test: 212017 · Missed or late test: 212017 · 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: 32020 · Missed or late test: 122020 · Missed or late test: 122020 · Missed or late test: 122020 · Missed or late test: 1220202021 · Missed or late test: 102021 · Missed or late test: 102021 · Missed or late test: 102021 · Missed or late test: 102022 · Missed or late test: 72022 · Missed or late test: 72022 · Missed or late test: 72023 · Missed or late test: 332023 · Missed or late test: 332023 · Missed or late test: 332023 · Missed or late test: 332023 · Missed or late test: 332023 · Missed or late test: 332023 · Missed or late test: 332023 · Missed or late test: 332023 · Missed or late test: 332023 · Missed or late test: 332023 · Missed or late test: 332024 · Treatment lapse: 32024 · Missed or late test: 102024 · Missed or late test: 102024 · Missed or late test: 102024 · Missed or late test: 102024 · Notice or report: 12025 · Missed or late test: 42025 · Missed or late test: 42025 · Notice or report: 12025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
4% treatment lapse · 594% missed or late test · 1092% notice or report · 2

Across Oregon, 85% 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 3 results on file · action level 15 ppb

4.6 ppb
3 ppb
2.6 ppb

Every violation on record

  1. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  2. 2025-04-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  3. 2025-04-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  4. 2025-01-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/RBack in compliance
  5. 2024-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  6. 2024-05-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  7. 2024-05-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  8. 2024-05-01Surface water treatment (SWTR) ×2Treatment Technique (SWTR and GWR)Back in compliance
  9. 2024-04-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  10. 2024-02-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  11. 2024-02-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  12. 2024-01-01Lead and Copper Rule ×2Initial, Follow-up, or Routine Source Water M/RBack in compliance
  13. 2024-01-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  14. 2023-12-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  15. 2023-12-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  16. 2023-07-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/RBack in compliance
  17. 2023-05-01Revised Total Coliform RuleMONBack in compliance
  18. 2023-02-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  19. 2023-02-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  20. 2023-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  21. 2023-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  22. 2023-01-01StyreneMonitoring, RegularBack in compliance
  23. 2023-01-01EthylbenzeneMonitoring, RegularBack in compliance
  24. 2023-01-01TolueneMonitoring, RegularBack in compliance
  25. 2023-01-01BenzeneMonitoring, RegularBack in compliance
Show the other 69 entries
  1. 2023-01-01ChlorobenzeneMonitoring, RegularBack in compliance
  2. 2023-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
  3. 2023-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  4. 2023-01-01TrichloroethyleneMonitoring, RegularBack in compliance
  5. 2023-01-011,2-DichloropropaneMonitoring, RegularBack in compliance
  6. 2023-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
  7. 2023-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  8. 2023-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
  9. 2023-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  10. 2023-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  11. 2023-01-01Vinyl chlorideMonitoring, RegularBack in compliance
  12. 2023-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  13. 2023-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
  14. 2023-01-01DichloromethaneMonitoring, RegularBack in compliance
  15. 2023-01-01Xylenes, TotalMonitoring, RegularBack in compliance
  16. 2023-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  17. 2023-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  18. 2023-01-01NitrateMonitoring, RegularBack in compliance
  19. 2023-01-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/RBack in compliance
  20. 2022-12-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  21. 2022-12-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  22. 2022-07-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/RBack in compliance
  23. 2022-01-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  24. 2022-01-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  25. 2021-09-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  26. 2021-09-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  27. 2021-08-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  28. 2021-08-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  29. 2021-01-01Lead and Copper Rule ×4Initial, Follow-up, or Routine Source Water M/RBack in compliance
  30. 2020-12-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  31. 2020-12-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  32. 2020-11-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  33. 2020-11-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  34. 2020-07-01Lead and Copper Rule ×2Initial, Follow-up, or Routine Source Water M/RBack in compliance
  35. 2020-03-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  36. 2020-03-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  37. 2020-01-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/RBack in compliance
  38. 2018-03-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  39. 2018-03-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  40. 2017-09-01Revised Total Coliform RuleMONBack in compliance
  41. 2017-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  42. 2017-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  43. 2017-01-01DichloromethaneMonitoring, RegularBack in compliance
  44. 2017-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
  45. 2017-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  46. 2017-01-01Vinyl chlorideMonitoring, RegularBack in compliance
  47. 2017-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  48. 2017-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  49. 2017-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
  50. 2017-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  51. 2017-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
  52. 2017-01-011,2-DichloropropaneMonitoring, RegularBack in compliance
  53. 2017-01-01TrichloroethyleneMonitoring, RegularBack in compliance
  54. 2017-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  55. 2017-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
  56. 2017-01-01ChlorobenzeneMonitoring, RegularBack in compliance
  57. 2017-01-01BenzeneMonitoring, RegularBack in compliance
  58. 2017-01-01TolueneMonitoring, RegularBack in compliance
  59. 2017-01-01EthylbenzeneMonitoring, RegularBack in compliance
  60. 2017-01-01StyreneMonitoring, RegularBack in compliance
  61. 2016-10-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  62. 2016-10-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  63. 2016-09-01Revised Total Coliform RuleMONBack in compliance
  64. 2016-06-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  65. 2016-06-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  66. 2008-07-01Surface water treatment (LT2)Monitoring, Source Water (LT2)Back in compliance
  67. 1995-07-01Lead and Copper RuleOCCT/SOWT Treatment Installation/DemonstrationBack in compliance
  68. 1994-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  69. 1994-01-01Lead and Copper RuleOCCT/SOWT Study/RecommendationBack in compliance

System details

Population served600
Service connections267
Water sourceSurface Water
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityMapleton
EPA ZIP on file97453

Areas served

  • Lane County

Reading this record

Mapleton Water District is a community water system that draws from surface water and serves about 600 people in Mapleton, Oregon. 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.