Industrial users of Clinton River WRRF
Pontiac, Michigan · 15 industrial users on record · 5 sampled for PFAS · 5 above 12 ng/L PFOS
In short
Clinton River WRRF in Pontiac treats 10.99 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.
PFAS sampling of the plant's industrial users
- Users sampled
- 5
- of 15 on record
- Above 12 ng/L PFOS
- 5
- 22 of 24 PFOS samples
- Highest PFOS sample
- 1,450 ng/L
- Oakland Heights Development
- Latest sample
- Dec 2023
- 24 samples in all
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 |
Unlock 10 more industrial users of this plant
For every industrial user of Clinton River WRRF: discharge flow, federal category, full PFAS sampling history, source documents and contacts. Free with a Klarifi account.
Or let Klarifi Plus run the outreach for you →Industrial users discharging to Clinton River WRRF, ordered by their highest PFOS sample; the first 5 of 15. Source: PFAS sampling reports that treatment plants file with EGLE under the IPP PFAS Initiative (MiEnviro Portal), extracted by Klarifi.
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
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 18, 2026.
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.