Septic Tanks Don’t Work, Restoration Does

For Friday, Aug, 7, 2015

[audio https://dl.dropbox.com/s/ng90urix4mxpayo/8-7-15-environment-report-mrgreatlakes.mp3]

1 – Great Lakes restoration projects are coming to Northeast Michigan.

Sustain Our Great Lakes, a public-private partnership, is funding 20 projects at a total cost of more than $5.7 million.

That money includes $350,000 to Huron Pines, a nonprofit in Gaylord.

Huron Pines will use $115,000 to restore more than 350 acres of wetland and shoreline habitat by controlling invasive species, planting native buffers, and reconnecting upland and wetland habitat.

Another $235,000 will be used in the Au Gres River Watershed, to replace five road–stream crossings, install in-stream habitat structures, and implement agricultural conservation practices.

Other grants went to conservation organizations and public agencies in Indiana, Minnesota, New York, Ohio, Ontario, Pennsylvania and Wisconsin.

2 – Researchers at Michigan State University say, bluntly, that “septic tanks aren’t keeping poo out of rivers and lakes.”

poo sign michigan msu septic tanks

Credit: Börkur Sigurbjörnsson

The researchers sampled 64 river systems in Michigan for E. coli and human fecal bacteria as part of largest watershed study of its kind to date.

Sample after sample, bacterial concentrations were highest where there were higher numbers of septic systems in the watershed area.

It has been assumed that soil can filter human sewage, working as a natural treatment system. Unfortunately, such systems do not keep E. coli and other pathogens from water supplies, the researchers say.

The MSU study was published in the Proceedings of the National Academy of Sciences.

Researchers say information from the study is vital for improving management decisions for locating, constructing, and maintaining on-site wastewater treatment systems.

3 – Old habitat is being reopened to Saginaw Bay fish.

A Frankenmuth fish passage project began last week. The work will reconnect fish of the Saginaw Bay to more than 70 miles of historically significant spawning areas.

Construction crews are assembling a “rock rapids” system along the Cass River, which will allow passage of walleye, sturgeon and other fish beyond the a dam to areas that have not been accessible for more than 150 years.

Early work on the project was supported by the Saginaw Bay Watershed Initiative Network, headquartered in Bay City.

The project should be mostly complete by mid-September.

-30-

– Mr. Great Lakes is heard at 9 a.m. Fridays in Bay City, Michigan, on Delta College Q-90.1 FM NPR.

Follow @jeffkart on Twitter

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