non pollution

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Sept. 2, 2022, 2:43 a.m.
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Hello Mr. socraticDev,

 

How are you ?

 

Following the inspection of the river near your place, it seems that the rainbow present in the river is caused by the decomposition of organic/inorganic matter by ferruginous bacteria.

 

However, to prevent any error on my part, sampling was done and retention measures were installed.

 

Unfortunately, I did not find an informative article in French, but here are some informative articles on the subject:

 

https://nwdistrict.ifas.ufl.edu/nat/2021/11/19/iron-oxidizing-bacteria-an-unusual-natural-phenomenon/

https://www.bmcc.nsw.gov.au/media-centre/iron-bacteria-blooms-blue-mountains-given-wet-period

 

When the analysis results are available to me, I will be able to better decide whether decontamination is necessary. If the source is likely natural, there is no environmental risk.

 

Cheers,

________________________________________________
Alexandre Caron

Environment and health technician
Environmental monitoring section

Environmental Prevention and Control Division

Prevention and environmental quality