Community Water System · PWSID IL0790010

Ej Water Cooperative

Serves 29,720 peopleSurface WaterOwner: PrivateDieterich, Illinois
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 2006: 26 violations. 1 over the limit · 23 missed or late tests · 2 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.

1Over the limit
0Treatment lapse
23Missed or late test
2Notice or report1 open

More violations on record than 92% 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

20052006 · Notice or report: 120102015 · Over the limit: 120152018 · Missed or late test: 220202022 · Missed or late test: 12024 · Missed or late test: 162024 · Missed or late test: 162024 · Missed or late test: 162024 · Missed or late test: 162024 · Missed or late test: 162024 · Missed or late test: 162024 · Missed or late test: 162024 · Missed or late test: 162025 · Missed or late test: 42025 · Missed or late test: 42025 · Notice or report: 12025
One square ≈ 2 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
4% over the limit · 188% missed or late test · 238% notice or report · 2

Across Illinois, 81% of violations are missed or late tests and 3% 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 41 results on file · action level 15 ppb

8 ppb
8 ppb
7.4 ppb
7.4 ppb
7 ppb
6 ppb
5.6 ppb
4.5 ppb
4.4 ppb
4.2 ppb
3.8 ppb
3.7 ppb
2.8 ppb
2.8 ppb
2.8 ppb
2.7 ppb
2.6 ppb
2.6 ppb
2.5 ppb
2.3 ppb
2.2 ppb
2 ppb
2 ppb
2 ppb

Open now (1)

  1. 2025-07-01Consumer Confidence RuleCCR Inadequate ReportingOpen

Every violation on record

  1. 2025-07-01Consumer Confidence RuleCCR Inadequate ReportingOpen
  2. 2025-07-01CryptosporidiumMonitoring, Source Water (LT2)Back in compliance
  3. 2025-04-01E. ColiMonitoring, Source Water (LT2)Period ended · no return to compliance on file
  4. 2025-04-01CryptosporidiumMonitoring, Source Water (LT2)Period ended · no return to compliance on file
  5. 2025-04-01TurbidityMonitoring, Source Water (LT2)Period ended · no return to compliance on file
  6. 2024-12-01E. ColiMonitoring, Source Water (LT2)Period ended · no return to compliance on file
  7. 2024-12-01TurbidityMonitoring, Source Water (LT2)Period ended · no return to compliance on file
  8. 2024-11-01E. ColiMonitoring, Source Water (LT2)Period ended · no return to compliance on file
  9. 2024-11-01CryptosporidiumMonitoring, Source Water (LT2)Period ended · no return to compliance on file
  10. 2024-11-01TurbidityMonitoring, Source Water (LT2)Period ended · no return to compliance on file
  11. 2024-11-01ChloriteMonitoring and Reporting (DBP)Back in compliance
  12. 2024-10-01E. ColiMonitoring, Source Water (LT2)Period ended · no return to compliance on file
  13. 2024-10-01CryptosporidiumMonitoring, Source Water (LT2)Period ended · no return to compliance on file
  14. 2024-10-01TurbidityMonitoring, Source Water (LT2)Period ended · no return to compliance on file
  15. 2024-09-01E. ColiMonitoring, Source Water (LT2)Back in compliance
  16. 2024-09-01CryptosporidiumMonitoring, Source Water (LT2)Back in compliance
  17. 2024-09-01TurbidityMonitoring, Source Water (LT2)Back in compliance
  18. 2024-08-01E. ColiMonitoring, Source Water (LT2)Back in compliance
  19. 2024-08-01CryptosporidiumMonitoring, Source Water (LT2)Back in compliance
  20. 2024-08-01TurbidityMonitoring, Source Water (LT2)Back in compliance
  21. 2024-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  22. 2022-09-01ChloriteMonitoring and Reporting (DBP)Back in compliance
  23. 2018-12-01Revised Total Coliform RuleMONBack in compliance
  24. 2018-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  25. 2015-12-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
Show the other 1 entries
  1. 2006-08-24Consumer Confidence RuleCCR Inadequate ReportingBack in compliance

System details

Population served29,720
Service connections11,888
Water sourceSurface Water
System typeCommunity Water System
OwnerPrivate
StatusActive
CityDieterich
EPA ZIP on file62424

Areas served

  • Jasper County

Reading this record

Ej Water Cooperative is a community water system that draws from surface water and serves about 29,720 people in Dieterich, 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.