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E.coli Public Release 9-23-15
9/23/2015 3:00:00 PM - Utilities Services

Here are the E.coli results from this week. The levels have increased slightly from last week.

 

Please distribute the attached information.

E. coli levels on the Chippewa River were sampled at School Rd bridge crossing,  Meridian Park, Chip-A-Waters Park, North Branch Chippewa River near Meridian Road

and Chippewa Rd bridge crossing on Tuesday, September 22nd, 2015. The results are as follows:

 

School Rd bridge crossing:

Daily Geometric Mean: 10

30-Day Geometric Mean: 20

 

The mean E.coli level at School Rd bridge crossing of 10 is currently below 300, the State of Michigan Water Quality Standard for Daily Geometric Mean. The 30-Day Geometric mean of 20 is currently below 130, the State of Michigan Water Quality Standard for 30-Day Geometric Mean.

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Meridian Park:

Daily Geometric Mean: 96

30-Day Geometric Mean: 133

The mean E.coli level at Meridian park of 96 is currently below 300, the State of Michigan Water Quality Standard for Daily Geometric Mean. The 30-Day Geometric mean of 133 is currently above 130, the State of Michigan Water Quality Standard for 30-Day Geometric Mean.

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North Branch Chippewa River near Meridian Road

Daily Geometric Mean: 500

30-Day Geometric Mean: 885

The mean E.coli level at Meridian of 500 is currently above 300, the State of Michigan Water Quality Standard for Daily Geometric Mean. The 30-Day Geometric mean of 885 is currently above 130, the State of Michigan Water Quality Standard for 30-Day Geometric Mean.

 

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Chipp-A-Waters Park:

Daily Geometric Mean: 320

30-Day Geometric mean: 248

The mean E.coli levels at Chip-A-Waters Park of 320 is currently above 300, the State of Michigan Water Quality Standard for Daily Geometric Mean. The 30-Day Geometric mean of 248 is currently above 130, the State of Michigan Water Quality Standard for 30-Day Geometric Mean.

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Chippewa Rd bridge crossing:

Daily Geometric Mean: 685

30-Day Geometric Mean: 248

The mean E.coli level at Chippewa Rd bridge crossing of 685 is currently above 300, the State of Michigan Water Quality Standard for Daily Geometric Mean. The 30-Day Geometric mean of 248 is currently above 130, the State of Michigan Water Quality Standard for 30-Day Geometric Mean.

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Based on the 30-day geometric mean the Meridian Park, North Branch of Chippewa River,  Chipp-A-Waters Park and Chippewa Rd. do exceed State of Michigan water quality standards for full body contact. 


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