Don't bite on this story. It's propaganda. The good guys are winning the argument and they, the bad guys know by throwing the dastardly drug issue into the mix they can muddy up the argument.
For years and years and years salmonoids returned to rivers in Washington and had to swim through bodies of water so polluted you could almost walk on it.
The inland river system in America until recently was used as sewer and other industrial waste dumps, yet fish survived and prospered. I do not beleive for a minute, the clandestine drug dump is the culprit.
Swimming through poluted waters and surviving a caustic attack on gills are two different things.
Hey Bob, you spend a lot of time in the meth and pot areas, ever think your activities may have been filmed???