Effects of post-event event effluent on sea fishing

[Highlander]

I dont think it would be a problem, because I dont think it would reach the sea, if your sewage system wasn't working it would just block up and wouldn't go anywhere,...if waste got as far as the treatment centers then it would be treated and water cleaned.

.... but lets say it did get to the sea, fish wouldn't swim in unfit water, you would either see dead fish, or no fish...and what little fish might feel they could deal with would be filter through their gills,.... I dont think it would effect the fish you could catch