LJ, the white ones are to filter out fluoride. The black ones are the good ones who filter out the ick.
This discussion made me think that even tho I’m on a 228’ deep well, it might be a good idea to replace the filters.
LOL, I “requested” DH to buy me one for Christmas one year (1998), he told me it’s the most he ever spent on me! After he died and I moved here, I hauled water for 2 years, so the Berky was used all the time.
Then, after the well was finally put in, I still used the Berky cos I didn’t trust the water...sometimes it smelled (not rotten egg, just “off”). (Was my water coming from China? my well is about 4 times as deep as my country neighbors.) Did that for about 2 years and decided what’s the worst the water can do, give me cancer?? HA! I already had cancer, so put the Berkey away. But, in typical Mom fashion, I feel obligated to have it on hand should any of the youngers need it.
So I looked on Amazon and the Berkey blacks are hella expensive! Like, $175!. But, another company makes the same thing for under 40 bucks. Yeah, I’m gonna get those.
Hmm, when we got the white ones they took out a lot more than flouride; but I guess not pesticides. The black ones sure got expensive.
Radon gas?..It comes from granite.