(NOTE: This research note is in-progress and not complete ... please feel free to add relevant info!) 

## Glyophosate 

### Where does it come from?

Glyophosate is a commonly used pesticide sold under trademarks such as Monsanto's 'Roundup'. that enters the water supply via ...

### How much is safe?
Experts disagree on safe levels; the EPA has set a legally enforceable maximum contaminant level (MCL) for glyphosate of 700 ug/l in drinking water, which is 7,000 times higher than the MCL in Europe.

### How is it tested?
Possible testing methods include: a) laboratory tests, for $200 - $300 (links to more info) b) spectroscopy (see Public Lab's Spectroscopy Kit) (links more info) ; c) conductivity (see Public Lab's Riffle) (links more info) d) paper chromatography tests (see the following four kits, available online) (links to more info)

### References

http://www.organicconsumers.org/articles/article_29696.cfm

## Endocrine disruptors 
## Mercury 
## Arsenic