Bill - I remember this stream from our 1997 Kickass I trip.  Steve and Charlie were adamant about filtering their water at the beginning of the trip.  I told them that where there was little risk if there was nobody camping in the basin, they religiously pumped their water in the morning.  Then on the 6th day, I came around the bend to this stream and saw them filling their water bottles directly from the creek. (Note no one got sick after the trip, or on any of our trips).