Great Lakes Water Authority
Published drinking-water records and contacts for Great Lakes Water Authority. System MI0002838. Review sources and dates; not a real-time water assessment.
- System ID
- MI0002838
- State or territory
- MI
- Published population served
- 0
- System type (source code)
- CWS
Published records and dates
- Michigan EGLE PFAS compliance sampling: 448 — 2020-10-12 – 2025-11-04
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
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| HFPO-DA | < 2 ppt | 2025-11-04 | TP101 / Michigan EGLE PFAS compliance sampling |
| PFNA | < 2 ppt | 2025-11-04 | TP101 / Michigan EGLE PFAS compliance sampling |
| PFOA | < 2 ppt | 2025-11-04 | TP100 / Michigan EGLE PFAS compliance sampling |
| PFHxA | < 2 ppt | 2025-11-04 | TP100 / Michigan EGLE PFAS compliance sampling |
| PFOS | < 2 ppt | 2025-11-04 | TP100 / Michigan EGLE PFAS compliance sampling |
| HFPO-DA | < 2 ppt | 2025-11-04 | TP100 / Michigan EGLE PFAS compliance sampling |
| HFPO-DA | < 2 ppt | 2025-11-04 | TP102 / Michigan EGLE PFAS compliance sampling |
| PFHxS | < 2 ppt | 2025-11-04 | TP100 / Michigan EGLE PFAS compliance sampling |
| PFOA | < 2 ppt | 2025-11-04 | TP101 / Michigan EGLE PFAS compliance sampling |
| PFHxS | < 2 ppt | 2025-11-04 | TP101 / Michigan EGLE PFAS compliance sampling |
| PFOS | < 2 ppt | 2025-11-04 | TP101 / Michigan EGLE PFAS compliance sampling |
| PFHxA | < 2 ppt | 2025-11-04 | TP102 / Michigan EGLE PFAS compliance sampling |
State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.
Download state records with source notes (CSV)
Published compliance history
6 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 |
|---|---|---|---|---|
| Surface Water Treatment Rule / Monitoring of Treatment (SWTR-Filter) | 2024-09-01 – 2024-09-30 | Resolved | No | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Treatment Technique Precursor Removal | 2024-01-01 – 2024-03-31 | Resolved | Yes | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Treatment Technique Precursor Removal | 2023-10-01 – 2023-12-31 | Resolved | Yes | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Treatment Technique Precursor Removal | 2023-07-01 – 2023-09-30 | Resolved | Yes | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2022-01-01 – 2022-03-31 | Resolved | No | 2026Q3 |
| Interim and Long Term 1 Enhanced Surface Water Treatment Rule / Failure Submit Filter Profile/CPE Report | 2021-08-01 – 2021-08-31 | Resolved | 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
- Michigan EGLE PFAS compliance sampling — last successful check: 2026-10-14
Administrative contact (EPA filing)
Steary, Christopher: 810-385-2021
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.