Since the last reliable water source (Trail Camp) is in a high use area, I always carry a water filter for this location.
nothing wrong with the water flowing into the small tarn/lake. Just don't take it out of the lake.
Also, unless you're up there in late season, Trail CAmp is the last "reliable" water source. Check above map - switchback 23 - and ask hikers who come down about it. Saves some weight at least for the first few hundred feet, and if you know where that switchback is, you won't have to filter either unless you find a wag bag right in the spring.
