Industrial users of City Of Port Huron Wastewater Treatment Plant
Port Huron, Michigan · 6 industrial users on record · 4 sampled for PFAS · 3 above 12 ng/L PFOS
City Of Port Huron Wastewater Treatment Plant in Port Huron treats 8.09 MGD and receives process wastewater from 6 industrial users on record in its pretreatment programme, led by metal finishing and plating (3) and automotive, metal and equipment manufacturing (1). 3 are categorical users under federal pretreatment standards. 4 of them have been sampled for PFAS (23 samples, 2023–2024); 3 had a sample with PFOS above the 12 ng/L screening level.
- City Of Port Huron Wastewater Treatment Plant: 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
- 4
- Above 12 ng/L PFOS
- 3
- Highest PFOS sample
- 2,900 ng/L
- Latest sample
- May 2024
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 6 industrial users
| # | Industrial user | Industry | Type | Highest PFOS | Latest PFOS | Samples |
|---|---|---|---|---|---|---|
| 1 | Auto Anodics · Port Huron | Metal finishing and plating | Categorical | 2,900 ng/L242× · Apr 2024 | 1,400 ng/LMay 2024 | 8 |
| 2 | St. Clair County Landfill · Smiths Creek | Landfills and waste management | Significant | 510 ng/L43× · Feb 2023 | 170 ng/LApr 2024 | 13 |
| 3 | Michigan Metal Coatings · Port Huron | Metal finishing and plating | Categorical | 370 ng/L31× · Aug 2023 | 370 ng/LAug 2023 | 1 |
| 4 | Dunn Paper, Inc. · Port Huron | Paper and packaging | — | not sampled | — | — |
| 5 | Michigan Metal Coatings · Port Huron | Metal finishing and plating | Categorical | not detected | not detectedAug 2023 | 1 |
Industrial users by industry
| Industry | Industrial users |
|---|---|
| Metal finishing and plating | 3 |
| Automotive, metal and equipment manufacturing | 1 |
| Landfills and waste management | 1 |
| Paper and packaging | 1 |
The largest groups, from each user's NAICS code.
Industrial users of City Of Port Huron Wastewater Treatment Plant: questions
Which industries discharge to City Of Port Huron Wastewater Treatment Plant?
6 industrial users on record discharge process wastewater to City Of Port Huron Wastewater Treatment Plant in Port Huron, most of them in metal finishing and plating (3), automotive, metal and equipment manufacturing (1), landfills and waste management (1). 3 are categorical users, subject to federal pretreatment standards for their industry.
Has PFAS been found in wastewater sent to City Of Port Huron Wastewater Treatment Plant?
4 of the plant’s industrial users have been sampled for PFAS, 23 samples in 2023–2024. 3 had at least one sample with PFOS above the 12 ng/L screening level; the highest was 2,900 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 City Of Port Huron Wastewater Treatment Plant?
This page shows the first 5 of 6. 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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