No open health-based violations on EPA record in the last 10 years.
EPA lists no population count. It uses surface water from its own intake.
From EPA's record for MI0002838. PurityMap is independent of Great Lakes Water Authority.
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3 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From January 2024 | Carbon, total | – | TT | Resolved |
| From October 2023 | Carbon, total | – | TT | Resolved |
| From July 2023 | Carbon, total | – | TT | Resolved |
No lab results for other contaminants (like PFAS) are on file for this system. EPA required that testing from systems serving more than 3,300 people, plus a sample of smaller ones.
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
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Follow this water →Great Lakes Water Authority's phone number on EPA record is 313-245-1601. Its mailing address is 11000 E 8 MILE RD, DETROIT, MI 48205.
According to EPA's record, Great Lakes Water Authority uses surface water from its own intake.
EPA's record shows 3 health-based violations for Great Lakes Water Authority in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 3 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
PurityMap has no verified website for Great Lakes Water Authority. Its phone number on EPA record is 313-245-1601. Its mailing address on EPA record is 11000 E 8 MILE RD, DETROIT, MI 48205. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.