Hey PEP-folks,
It was a long winter with illness, but I am glad to be back to badge bits!
We recently had our well water professionally tested, but as I didn't take all the required pics, oh well. So I decided to get some many-in-one test strips (from Amazon
https://www.amazon.com/dp/B0CQ1VLX88, this is not an
affiliate link, just disclosing what I used). The strips test for a basket of elements/compounds, but the one of interest to me was fluoride.
Yes, our wellhead water test got an F+. Sorry, chemistry/ion joke. But it scored 1.91mg/L, which is above California municipal drinking water recommended limit (0.7mg/L), though below the absolute max permitted in (2mg/L). Moreover, our Arsenic levels are higher than the current 0.01mg/L standard (which is fairly new, it used to be 0.04mg/L, but still, As might not be your friend).
So, I got the F/As reduction cartridges for the Berkey. We've had our Berkey at least a decade, very satisfied, but very subjective. I have never tested upstream & downstream of it, and here was my chance! So I sampled at our tap, dipped a strip, and then sampled after the Berkey.
I can't honestly recommend these strips. The reagent swatches are too close together, and I had to use several strips before I could piece together a non-blotted reading on some of the swatches. Still, they gave results, and generally speaking, it seems like the Berkey takes out some F+. It is by no means a tightly toleranced test, and I would use it only qualitatively, but that's OK, it is what it is, and I can find ways to make use of it.
As far as the overall picture of our water, it is what I expected - hard desert well water, but the pH is in a fine place. There's a nitrate reading, which I am curious about, but it jives with the professional report (1.93mg/L, max level 10). The well tested absent for the usual E.Coli/Coliform test, and the level is very consistent with the report from 2 years ago, so I am not overly worried. The arsenic this year is much higher than it was 2 years ago, which I believe to be due to many new wells coming on line in that time. This would lower the water table locally, and mean we were drawing older water from the aquifer, which has more dissolved minerals, including As. The lab guy thought this was reasonable, too, so I'm not completely making it up... I think.
All in all, minor postprocessing required, and we have water in a desert, so I will count my blessings.
Happy homesteading!
Mark