Community Water System · PWSID IL0995150

Fields Hill Improvement Association

Serves 312 peopleGroundwater PurchasedOwner: PrivateOttawa, Illinois
1 open treatment violation.

Open for: Lead service line inventory. 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 1993: 82 violations. 1 over the limit · 1 treatment lapse · 49 missed or late tests · 31 notices or reports. Most recent began 2025-09-26.

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

1Over the limit
1Treatment lapse1 open
49Missed or late test1 open
31Notice or report24 open

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

The record, year by year

1993 · Missed or late test: 1199520002002 · Notice or report: 12004 · Missed or late test: 12004 · Notice or report: 220052006 · Notice or report: 220102014 · Notice or report: 1201520202022 · Missed or late test: 22022 · Notice or report: 12023 · Over the limit: 12023 · Missed or late test: 72023 · Missed or late test: 72023 · Missed or late test: 72024 · Treatment lapse: 12024 · Missed or late test: 202024 · Missed or late test: 202024 · Missed or late test: 202024 · Missed or late test: 202024 · Missed or late test: 202024 · Missed or late test: 202024 · Missed or late test: 202024 · Notice or report: 92024 · Notice or report: 92024 · Notice or report: 92025 · Missed or late test: 182025 · Missed or late test: 182025 · Missed or late test: 182025 · Missed or late test: 182025 · Missed or late test: 182025 · Missed or late test: 182025 · Notice or report: 152025 · Notice or report: 152025 · Notice or report: 152025 · Notice or report: 152025 · Notice or report: 152025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
1% over the limit · 11% treatment lapse · 160% missed or late test · 4938% notice or report · 31

Across Illinois, 81% 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×+Combined Radium (-226 and...2023-07-01 · Combined Radium (-226 and -228): measured 8.00 PCI/L vs limit 5.00 PCI/L (1.6×)
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 (26)

  1. 2025-09-26Public NoticePN Violation for NPDWR ViolationOpen
  2. 2025-08-30Public Notice ×2PN Violation for NPDWR ViolationOpen
  3. 2025-08-22Public NoticePN Violation for NPDWR ViolationOpen
  4. 2025-08-20Public NoticePN Violation for NPDWR ViolationOpen
  5. 2025-07-31Public NoticePN Violation for NPDWR ViolationOpen
  6. 2025-07-02Lead service line inventoryRPTOpen
  7. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen
  8. 2025-06-07Public Notice ×2PN Violation for NPDWR ViolationOpen
  9. 2025-04-19Public NoticePN Violation for NPDWR ViolationOpen
  10. 2025-03-26Public NoticePN Violation for NPDWR ViolationOpen
  11. 2025-02-21Public Notice ×2PN Violation for NPDWR ViolationOpen
  12. 2025-01-26Public NoticePN Violation for NPDWR ViolationOpen
  13. 2024-12-18Public NoticePN Violation for NPDWR ViolationOpen
  14. 2024-12-07Public Notice ×2PN Violation for NPDWR ViolationOpen
  15. 2024-11-06Public Notice ×2PN Violation for NPDWR ViolationOpen
  16. 2024-10-17Lead service line inventoryRPTOpen
  17. 2024-10-17Lead service line inventoryTTOpen
  18. 2024-10-11Public NoticePN Violation for NPDWR ViolationOpen
  19. 2024-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen
  20. 2024-04-11Public NoticePN Violation for NPDWR ViolationOpen
  21. 2023-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen

Every violation on record

  1. 2025-09-26Public NoticePN Violation for NPDWR ViolationOpen
  2. 2025-09-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  3. 2025-09-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  4. 2025-08-30Public Notice ×2PN Violation for NPDWR ViolationOpen
  5. 2025-08-22Public NoticePN Violation for NPDWR ViolationOpen
  6. 2025-08-20Public NoticePN Violation for NPDWR ViolationOpen
  7. 2025-08-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  8. 2025-08-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  9. 2025-07-31Public NoticePN Violation for NPDWR ViolationOpen
  10. 2025-07-02Lead service line inventoryRPTOpen
  11. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen
  12. 2025-07-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  13. 2025-07-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  14. 2025-06-07Public Notice ×2PN Violation for NPDWR ViolationOpen
  15. 2025-06-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  16. 2025-06-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  17. 2025-05-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  18. 2025-05-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  19. 2025-04-19Public NoticePN Violation for NPDWR ViolationOpen
  20. 2025-04-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  21. 2025-04-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  22. 2025-03-26Public NoticePN Violation for NPDWR ViolationOpen
  23. 2025-03-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  24. 2025-03-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  25. 2025-02-21Public Notice ×2PN Violation for NPDWR ViolationOpen
Show the other 50 entries
  1. 2025-02-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  2. 2025-02-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  3. 2025-01-26Public NoticePN Violation for NPDWR ViolationOpen
  4. 2025-01-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  5. 2025-01-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  6. 2024-12-18Public NoticePN Violation for NPDWR ViolationOpen
  7. 2024-12-07Public Notice ×2PN Violation for NPDWR ViolationOpen
  8. 2024-12-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  9. 2024-12-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  10. 2024-11-06Public Notice ×2PN Violation for NPDWR ViolationOpen
  11. 2024-11-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  12. 2024-11-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  13. 2024-10-17Lead service line inventoryRPTOpen
  14. 2024-10-17Lead service line inventoryTTOpen
  15. 2024-10-11Public NoticePN Violation for NPDWR ViolationOpen
  16. 2024-10-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  17. 2024-10-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  18. 2024-09-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  19. 2024-08-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  20. 2024-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen
  21. 2024-07-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  22. 2024-07-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  23. 2024-06-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  24. 2024-05-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  25. 2024-04-11Public NoticePN Violation for NPDWR ViolationOpen
  26. 2024-04-01Chlorine ×3Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  27. 2024-04-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  28. 2024-03-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  29. 2024-02-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  30. 2024-01-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  31. 2024-01-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  32. 2023-12-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  33. 2023-11-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  34. 2023-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen
  35. 2023-10-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  36. 2023-10-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  37. 2023-09-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  38. 2023-07-01Combined Radium (-226 and -228)MCL, Averagemeasured 8.00 PCI/L · limit 5.00 PCI/LBack in compliance
  39. 2023-07-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  40. 2022-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  41. 2022-07-01Revised Total Coliform RuleMONBack in compliance
  42. 2022-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  43. 2014-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  44. 2006-02-08Public NoticePN Violation without NPDWR ViolationBack in compliance
  45. 2006-02-08Public NoticePN Violation for NPDWR ViolationBack in compliance
  46. 2004-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  47. 2004-07-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  48. 2004-01-09Public NoticePN Violation for NPDWR ViolationBack in compliance
  49. 2002-07-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  50. 1993-10-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance

System details

Population served312
Service connections104
Water sourceGroundwater Purchased
System typeCommunity Water System
OwnerPrivate
StatusActive
CityOttawa
EPA ZIP on file61350

Areas served

  • Lasalle County

Reading this record

Fields Hill Improvement Association is a community water system that draws from groundwater purchased and serves about 312 people in Ottawa, Illinois. 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.