Mr. HBG, I sympathize. Even in the "big city" we would have bouts of very rank algae smell.
A clarification if anyone else cares.
Apparently our water is purchased from said big city after it is taken from the ground, and... untreated, pushed through a pipe, and into our impressive new water tower.
Problem is it is taken out of the Kansas only famous Equus beds aquifers(sorry chap) which are being depleted due to people growing corn instead of wheat
The mineral content drew a letter from health and environment saying we had x amount of time to fix it.
It will be very interesting what happens, cuz there is no cheap easy solution.