Thanks for pursuing.
I wonder if the word "developed" spring means it is not presumably pristine water from on high, but say instead piped from some not-so-high source to that location.
Or does the word "developed" just mean a naturally -occuring spring that has been put to commercial or public use?
Either way, the coliform dont swim uphill so the source of contamination is at that spring...or higher. If dirty water at Trail Camp percolates through thousands of feet of rocks and gravel, where does it come out.?
One could put a harmless radioactive "tag" in Trail Camp lake but with dilution and passage of time to get downhill, it might be hard to detect. I realize this idea may be anathema to some folks even it is plausible. Dont know what other tricks the Water Dept has. Years ago the Brits had Indian "pundits" drop carved logs in rivers upstream and hoped to recover them downstream and map drainage of the Indian subcontinent. Did not work, trying to find a log umpteen miles or years later
