albee said:
Well that explains a lot. My running buddies and I used to soak our aching legs in Boulder Creek 4 or 5 times per week when I lived out there in the summer of 2000 and 2001. All this time I thought it was "shrinkage" since the water was so cold!
I always wondered what they were doing up there in Nederland and Ward!!
Thank you for raising awareness of this topic, Thom. Would you say that it is highly unlikely that someone could get Giardia from that type of source (a well)? If you didn't have access to the results of a water sample, what would you think about that well water - would you treat it or not, or would you choose to get water elsewhere? Also, knowing what you know, what level of treatment do you personally practice when procuring drinking water in the backcountry? I'm just curious. Thanks in advance!
The gadolinium does not come from Ward and Nederland, based on upstream samples, but from the hospital in Boulder. I think that most of the other contaminants are also introduced in Boulder, as the sampling showed that they have much greater loadings below the sewage treatment plant (i.e., sewage treatment plants do not remove everything). Most of Ward and Nederland use private septic systems, so their waste does not reach Boulder Creek (not yet, anyway).
After nearly succumbing to dysentery in Ladakh in 1980 (could have been the water, or could have been tainted yak curd, which we reluctantly ate when offered by our gracious hosts), I have been very careful about what I drink and eat (including in restaurants!). I would never consider drinking from the Carrigain well, whether it is topping over as it was a couple weeks ago or when the water table is lower in drier seasons, without double treatment (two out of three, if possible: boiling, filtering, and/or using chemicals, such as iodine, which is what the solo Carrigain summit camper was doing when I visited most recently). But, that's just me, and I have friends who drink from White Mountain streams that enter from the sides of trails all the time, without apparent negative consequences. I think that people's gastro-intestinal systems vary incredibly in their ability to process various liquids and solids. But, all it takes is one giardia cyst from one infected rodent to make a person very sick (yes, antibiotics usually cures within a week to 10 days, but I just do not think that the distress is worth it). So, when I am solo hiking, I carry all the treated water that I think will be needed for a hike. But, if I am hiking with one or more others on a long traverse with lots of water sources en route, such as the Mahoosucs, I will carry a water filter to spread out the extra weight (so, just one of the three treatments). I carry iodine for emergencies, but do not like to use it routinely because it kills all the good flora along with the bad in your gut. High on Aconcagua, I was really conflicted, as the temperature of our boiling water was probably not sufficient to kill everything, and filters do not remove viruses, given their small size. But, we did not use our iodine, and got away with it. I do not carry a stove on day hikes because of the extra weight. I know, some day I will not be prepared for an emergency when a stove could save my life, but I do carry an emergency fire starter in cotton balls soaked in vaseline; hey, Mats could use these on his feet! :>)