Ticking time-bomb lurking in your pump room?

[Tink]

Well, I seriously doubt somebody is pouring acid in ones cachment tanks. The winds gather around the islands and move up towards Alaska, along the coastline there and down the mainland coast to about the tip of Baja, then circle back towards the islands. During its journey it picks up pollutants whether from the volcano or the LA smog filled basin and points in between, depositing the "dirt" wherever it rains.
Just too many people on this planet to make anything "pure" anymore.

Community begins with Aloha