If you don't do anything else..

[BOATS]

The link posted is actually not very accurate. Glyphosate is not used for hydrilla control and never has been, actually it doesn't even work applied subsurface below the water because it is quickly deactivated, binds to sediments, and broken down by microbes in the water. It has to be applied to the foliage of plants to actually work. The article also states it is a "known carcinogen"... this is also false, there is no peer reviewed data/information that points to glyphosate as being a carcinogen, it is actually listed as a "probable carcinogen" along with a number of other chemicals people are exposed to nearly every day. The person that started the petition also doesn't provide any evidence/data that links glyphosate to be the actual culprit responsible for the algal blooms mostly just speculation, and they are essentially focusing only on aquatic applications, but what about all the glyphosate that is applied on agriculture, residential and commercial properties. Not siding with anyone on this but these claims seem to be somewhat vague with limited data to support them.

No, but what they do use for submerged weeds does not seem good, everything on the sds says poison but okay for lakes
https://lakerestoration.com/pdf/AquatholSuperKLabel.pdf

[bass_prodigy75]

chlorine doesn't seem good either, but it is ok for use in swimming pools, potable water, artisan wells, food processing plants, etc..

http://fs1.agrian.com/pdfs/Aquafit_A..._AST_Label.pdf