I think you are right to arch an eyebrow but it is possible. A member of my brewing club lives about 7 miles from me as the crow flies. My well runs 27 on the sulfate. He sent me a Ward Labs report that said his well read 0. I said bring some over and have a beer while we test it. Sure enough, it came up 0 so there you are. Consider yourself lucky if you like noble hops.