City of Saginaw MI -
Laboratory

The laboratory operates seven days a week from 8:00 am to 4:30 pm. The laboratory is staffed by a Chemist and two Lab Technicians.

There are a variety of analyses done by the laboratory personnel on a daily basis to monitor water quality. The Michigan Department of Environmental Quality (MDEQ) and the United States Environmental Protection Agency (EPA) require analyses be done on the Influent and Effluent water for the following parameters: Suspended Solids, BOD 5 (five day Biochemical Oxygen Demand), Dissolved Oxygen, Fecal Coliform, Phosphorus, pH (hydrogen ion) and Ammonia Nitrogen. All of these tests are done to ensure the plant meets the discharge parameter limits set by the MDEQ and EPA in its National Pollutant Discharge Elimination System (NPDES) Permit.

Other analyses are done in addition to what is required. Monitoring of Industrial Pollutants is also important. Testing is performed on a bi-weekly basis to detect contaminants such as cadmium, chromium, copper, cyanide, iron, lead, mercury, nickel, silver, zinc, phenol, oils, greases and poly-chlorinated bi-phenyls (PCB's).

Major Daily Tests

Test NPDES Permit Limit Actual Discharge 2012
Suspended Solids30 mg/L 5.3 mg/L
BOD 30 mg/L 7.2 mg/L
Dissolved Oxygen 3.0 mg/L 6.5 mg/L
Fecal Coliform 200/100 ml 45/100 ml
Phosphorus 0.75 mg/L 0.39 mg/L
pH 6.5 to 9.0 7.1
Ammonia Nitrogen5.0 mg/L0.4 mg/L

Wastewater Microbiology

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FREEDOM OF INFORMATION ACT

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