[trading_wheels]

>> and the water from Montreal, which Roy claims to have just the right purity level to produce his spruce beer’s unique taste.

Must be the result of this: https://www.cnn.com/2015/11/12/americas/canada-montreal-wast...

[giarc]

My neighbour growing up had a great patch of wild rhubarb in the back yard. Giant stalks with giant leaves. Turns out his septic tank was leaking and it was directly under the rhubarb.

[Raphmedia]

This situation was really bad but obliviously wastewater isn't the water that we drink.