Im thinking about getting a steripen. I do much of my backpacking on the Superior Hiking Trail. I have read online that the steripen does not kill tapeworm eggs, and that tape worm eggs are present at Isle Royale NP, and in Lake Superior (?). I'm not planning any trips to Isle Royale, but the relative geographic proximity to the SHT and to Lake Superior has me concerned. Anyone know if tapeworm eggs are or are not present along the SHT and its water sources? Anyone with experience using just a steripen or steripen/coffee filter, bandana, etc. on the SHT? Were you okay?