Industrial users of Clinton River WRRF
Pontiac, Michigan · 15 industrial users on record · 5 sampled for PFAS · 5 above 12 ng/L PFOS
Clinton River WRRF in Pontiac treats 13.91 MGD and receives process wastewater from 15 industrial users on record in its pretreatment programme, led by landfills and waste management (5) and automotive, metal and equipment manufacturing (3). 1 are categorical users under federal pretreatment standards. 5 of them have been sampled for PFAS (24 samples, 2023); 5 had a sample with PFOS above the 12 ng/L screening level.
- Clinton River WRRF: permit, flow and compliance
- PFAS sources at all Michigan plants
- All treatment plants in Michigan
- What is a significant industrial user?
PFAS sampling of the plant's industrial users
- Users sampled
- 5
- Above 12 ng/L PFOS
- 5
- Highest PFOS sample
- 1,450 ng/L
- Latest sample
- Dec 2023
12 ng/L is Michigan’s surface water quality value for PFOS and the screening criterion of the initiative; 170 ng/L is the value for PFOA since July 2022. Both apply to what a treatment plant discharges to a river or lake, not to what a factory sends to the sewer. An industrial user above the level has not broken a limit: it is a source the receiving plant has to follow up with sampling, a reduction plan or pretreatment.
5 of 15 industrial users
| # | Industrial user | Industry | Type | Highest PFOS | Latest PFOS | Samples |
|---|---|---|---|---|---|---|
| 1 | Oakland Heights Development · Auburn Hills | Landfills and waste management | Significant | 1,450 ng/L121× · Dec 2023 | 1,450 ng/LDec 2023 | 12 |
| 2 | 561 Collier Rd · Auburn Hills | Landfills and waste management | Significant | 930 ng/L78× · Feb 2023 | 640 ng/LAug 2023 | 3 |
| 3 | RJL Equities · Auburn Hills | Landfills and waste management | Significant | 57.9 ng/L4.8× · Aug 2023 | 57.9 ng/LAug 2023 | 2 |
| 4 | GFL-Transfer Station · Pontiac | Landfills and waste management | Significant | 33 ng/L2.8× · Aug 2023 | 33 ng/LAug 2023 | 3 |
| 5 | Pontiac Landfill (Advanced Disposal Services) · Pontiac | Landfills and waste management | Significant | 21 ng/LSep 2023 | not detectedNov 2023 | 4 |
Industrial users by industry
| Industry | Industrial users |
|---|---|
| Landfills and waste management | 5 |
| Automotive, metal and equipment manufacturing | 3 |
| Hospitals and public institutions | 3 |
| Chemicals, plastics and petroleum | 2 |
| Food and beverage | 1 |
| Other industries | 1 |
The largest groups, from each user's NAICS code.
Industrial users of Clinton River WRRF: questions
Which industries discharge to Clinton River WRRF?
15 industrial users on record discharge process wastewater to Clinton River WRRF in Pontiac, most of them in landfills and waste management (5), automotive, metal and equipment manufacturing (3), hospitals and public institutions (3). 1 are categorical users, subject to federal pretreatment standards for their industry.
Has PFAS been found in wastewater sent to Clinton River WRRF?
5 of the plant’s industrial users have been sampled for PFAS, 24 samples in 2023. 5 had at least one sample with PFOS above the 12 ng/L screening level; the highest was 1,450 ng/L. The level is a surface water quality value, so a sample above it marks a source the plant has to follow up, not a violation by the company.
What is an industrial pretreatment programme?
Under the Clean Water Act a treatment plant that receives industrial wastewater has to control it at the source: it permits its significant industrial users, sets local limits, inspects and samples them, and reports to the state each year. The aim is to stop pollutants that pass through or disrupt the plant, or end up in its biosolids.
How do I get the full list of industrial users for Clinton River WRRF?
This page shows the first 5 of 15. The full list, with each user’s discharge flow, federal category, PFAS sampling history, source documents and contacts, is available with a free Klarifi account.
Industrial users: PFAS sampling reports that treatment plants file with EGLE under the IPP PFAS Initiative (MiEnviro Portal), extracted by Klarifi. Values are as reported by the receiving plant; a value shared by several compounds in one sample is read as the laboratory’s reporting limit and not counted as a detection. Spotted an error? Tell us and we correct it.
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