Ok - dumb newbie questions - we are doing our first true backcounty camping trip in a month (always done car camping previously). We are staying at a small campsite that has 5 camp sites and a small creek running through. If we want to wash out our clothes using camp suds (just a drop of soap, but mainly just to rinse off our clothes as it will likely be hot and sweaty,) can we do it in the creek were we get drinking water, or is that bad etiquette? We would do it downstream (make it obvious that we are going down from the camp site). Not sure how else (other than just taking a couple bottles of water out of the lake and doing so at our camp site.