Diamond Lake School
Published drinking-water records and contacts for Diamond Lake School. System IL3086868. Review sources and dates; not a real-time water assessment.
- System ID
- IL3086868
- State or territory
- IL
- Published population served
- 350
- System type (source code)
- NTNCWS
Published records and dates
- Lead and copper monitoring summaries: 17 — 1994-07-01 – 2023-12-31
Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.
Published testing results
Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.
“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example
Lead and copper: 90th-percentile summaries
These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile
| Substance | Published 90th percentile | Monitoring period | Source quarter |
|---|---|---|---|
| Lead (PB90) | 0.00062 mg/L | 2021-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0.0016 mg/L | 2015-01-01 – 2017-12-31 | 2026Q3 |
| Lead (PB90) | 0.0018 mg/L | 2012-01-01 – 2014-12-31 | 2026Q3 |
| Lead (PB90) | 0.00108 mg/L | 2009-01-01 – 2011-12-31 | 2026Q3 |
| Lead (PB90) | 0.0032 mg/L | 2006-01-01 – 2008-12-31 | 2026Q3 |
| Lead (PB90) | 0.00797 mg/L | 2003-01-01 – 2005-12-31 | 2026Q3 |
| Lead (PB90) | 0.004 mg/L | 2000-01-01 – 2002-12-31 | 2026Q3 |
Published compliance history
26 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.
| Rule / record | Period | Recorded status | Health-based (EPA classification) | Source quarter |
|---|---|---|---|---|
| Nitrate Rule / Monitoring, Regular | 2025-01-01 – 2025-12-31 | Resolved | No | 2026Q3 |
| Lead and Copper Rule Revisions / LSL Reporting | 2024-10-17 – — | Resolved | No | 2026Q3 |
| Lead and Copper Rule Revisions / LSL Inventory | 2024-10-17 – — | Resolved | Yes | 2026Q3 |
| Lead and Copper Rule / Lead Consumer Notice | 2024-03-26 – — | Resolved | No | 2026Q3 |
| Lead and Copper Rule / Lead Consumer Notice | 2021-09-02 – — | Resolved | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
| Volatile Organic Chemicals / Monitoring, Regular | 1996-01-01 – 1996-03-31 | Archived | No | 2026Q3 |
Source dates and refresh checks
A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.
- EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
- EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
- EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17
Administrative contact (EPA filing)
Styskal, Theodore: 847-566-6601
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.