Community Water System · PWSID IL1030300

Harmon

Serves 111 peopleGroundwaterOwner: Local GovernmentHarmon, 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: 21 violations. 1 over the limit · 9 missed or late tests · 11 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
9Missed or late test1 open
11Notice or report

More violations on record than 90% 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: 52006 · Notice or report: 52006 · Notice or report: 52006 · Notice or report: 52006 · Notice or report: 5201020152016 · Notice or report: 12019 · Missed or late test: 12020 · Missed or late test: 22020 · Missed or late test: 220202021 · Over the limit: 12021 · Missed or late test: 12021 · Notice or report: 22021 · Notice or report: 22022 · Missed or late test: 22022 · Missed or late test: 22022 · Notice or report: 22022 · Notice or report: 22023 · Missed or late test: 12023 · Notice or report: 12025 · Missed or late test: 22025 · Missed or late test: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
5% over the limit · 143% missed or late test · 952% notice or report · 11

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...2021-01-01 · Combined Radium (-226 and -228): measured 7.00 PCI/L vs limit 5.00 PCI/L (1.4×)
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.

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

7.2 ppb
5 ppb
1.2 ppb

Open now (1)

  1. 2022-12-30Lead and Copper RuleLead Consumer NoticeOpen

Every violation on record

  1. 2025-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  2. 2025-07-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  3. 2023-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  4. 2023-01-01Combined Radium (-226 and -228)Monitoring, RegularPeriod ended · no return to compliance on file
  5. 2022-12-30Lead and Copper RuleLead Consumer NoticeOpen
  6. 2022-07-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  7. 2022-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  8. 2022-01-15Public NoticePN Violation for NPDWR ViolationBack in compliance
  9. 2021-10-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  10. 2021-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  11. 2021-04-25Public NoticePN Violation for NPDWR ViolationBack in compliance
  12. 2021-01-01Combined Radium (-226 and -228)MCL, Averagemeasured 7.00 PCI/L · limit 5.00 PCI/LBack in compliance
  13. 2020-10-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  14. 2020-04-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  15. 2019-12-30Lead and Copper RuleLead Consumer NoticeBack in compliance
  16. 2016-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  17. 2006-10-09Public NoticePN Violation without NPDWR ViolationBack in compliance
  18. 2006-10-09Public NoticePN Violation for NPDWR ViolationBack in compliance
  19. 2006-07-11Public NoticePN Violation for NPDWR ViolationBack in compliance
  20. 2006-01-06Public NoticePN Violation without NPDWR ViolationBack in compliance
  21. 2006-01-06Public NoticePN Violation for NPDWR ViolationBack in compliance

System details

Population served111
Service connections75
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityHarmon
EPA ZIP on file61042

Areas served

  • Harmon, Lee County

Reading this record

Harmon is a community water system that draws from groundwater and serves about 111 people in Harmon, 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.