3m Co Greystone Plant
Published drinking-water records and contacts for 3m Co Greystone Plant. System WI7370691. Review sources and dates; not a real-time water assessment.
- System ID
- WI7370691
- State or territory
- WI
- Published population served
- 52
- System type (source code)
- NTNCWS
Published records and dates
- Lead and copper monitoring summaries: 37 — 1993-07-01 – 2022-09-30
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 |
|---|---|---|---|
| Copper (CU90) | 1.38001 mg/L | 2022-06-01 – 2022-09-30 | 2026Q3 |
| Lead (PB90) | 0.000292 mg/L | 2022-06-01 – 2022-09-30 | 2026Q3 |
| Lead (PB90) | 0.00102 mg/L | 2019-06-01 – 2019-09-30 | 2026Q3 |
| Lead (PB90) | 0.000665 mg/L | 2016-06-01 – 2016-09-30 | 2026Q3 |
| Lead (PB90) | 0.00175 mg/L | 2013-06-01 – 2013-09-30 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2012-06-01 – 2012-09-30 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2010-07-01 – 2010-12-31 | 2026Q3 |
| Lead (PB90) | 0.0008 mg/L | 2010-01-01 – 2010-06-30 | 2026Q3 |
Published compliance history
10 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 |
|---|---|---|---|---|
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2024-01-01 – 2024-12-31 | Resolved | No | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2024-01-01 – 2024-12-31 | Resolved | No | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2023-01-01 – 2023-12-31 | Resolved | No | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2023-01-01 – 2023-12-31 | Resolved | No | 2026Q3 |
| Lead and Copper Rule / OCCT/SOWT Study/Recommendation | 2022-10-01 – — | Resolved | Yes | 2026Q3 |
| Lead and Copper Rule / Water Quality Parameter M/R | 2022-06-01 – 2022-11-30 | Resolved | No | 2026Q3 |
| Lead and Copper Rule / Water Quality Parameter M/R | 2022-06-01 – 2022-11-30 | Resolved | No | 2026Q3 |
| Lead and Copper Rule / Lead Consumer Notice | 2020-01-01 – — | Resolved | No | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Treatment Technique No Certif. Operator | 2017-11-02 – — | Resolved | Yes | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1994-10-01 – 1994-12-31 | 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
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.