Clean camping practices and river rafting regulations dictate that white water rafting groups carry all solid human waste with them, and out of the river corridor at the end of the trip. That means we all use portable toilets and pack out the contents. Personally, I really enjoy a dramatic view!
River toilets are referred to by many river runners as 'groovers'. As the story goes, the name 'groover' is due to the fact that back in the day, river runners used surplus ammunition containers called 'rocket boxes' as their toilets. Users would obtain 'grooves' in their cheeks from trying to sit on the sharp edges of the box. Some still use rocket boxes, but usually have adapted them with regular toilet seats!
There are several other types of toilets and each has their advocates and detractors. I'll skip that religious war. But if you'll be handling the groover, be sure to remember to take a supply of rubber gloves. They sure help when dealing with the toilets on the river and when things get out of hand during the dump process after the trip.
It is absolutely imperative that nothing but human waste and toilet paper goes into a groover. If you have never taken a rafting trip, you need to know that this IS A HUGE DEAL! We use devices called 'scat machines' to clean river toilets. Think of them as giant dish washers for your toilet. Anything besides poop and toilet paper plugs them up. Anything. Too many times I've had to dig toilet paper tubes, feminine products, fabric, and sticks out of a full groover tank before emptying it in a scat machine. These items can clog scat machines with nasty consequences and make me liable for big repair bills. While the machine is out of service for days or weeks at a time, every other group coming off that river needs to go search for another way to dump their tanks. I'm a pretty thick-skinned guy. But this is one offense that really sets me off. I expect it does the same for others who must deal with river toilets after a trip.
Regulations on most rivers require that urine goes into the river itself. Deal with it. This rule does a great job of keeping campsites from becoming stinky. And don't worry about the hundreds of people peeing upstream from you. The dilution factor is so great that you shouldn't worry about swimming in contaminated water. And some biologists even think that adding urine may actually improve the subsurface river environment.
Be sure to set up a hand washing station. There are several ways to rig up a means to apply water to hands without touching anything. Some are as simple as a tank of water with a spigot that sits on the edge of a table. Others use a foot pump, and there are even battery powered electric models. Make sure the soapy water from your hands drains into a container. Make the hand washing station one of the first items to set up when you make camp, and that last to pack away when you break camp.
Keep a bottle of hand sanitizer on the kitchen counter or a camp table. Also, keep a box of alcohol baby wipes handy. They're great to clean surfaces and hands, and can be used in a pinch to clean a piece of silverware or a kitchen knife.
All liquids from cooking and dish washing must be strained. We do so over our infamous 'ca-ca bucket', a special bucket clearly labeled for waste water. We then discard the water according to the regulations for that river.
Know the local regulations for disposal of soapy or contaminated water. Use a catch-bucket and then cast the water above the high water line or into the main current of the river, depending on the regulations for the river you are floating. Spit your toothpaste into the waste water bucket. Dump all your soapy, strained dishwater and your bleached rinse water into the waste water bucket. Strain and left-over soups and liquid foods, and dump empty left over beer or soda pop in there too. Strain all liquids as necessary, and then dispose of it all properly.
We keep three garbage bags open at all times for burnable, non-burnable, and recyclable items. Also, discard cooking greases and oils in a container in the trash or burn in the fire pan.
Sun showers are great little devices, but soap should not be used anywhere near the river or in any hot springs. Use sun showers according to the regulations for disposal of waste water, that is, either capture and cast soapy water into the current or shower above the high water line.
Procuring fresh potable water is sometimes a challenge. But more challenging is making sure that people handling the water jugs don't contaminate your precious supply and the containers you carry it in. So be sure to wash hands before working with water jugs and handling spouts and spigots. Bad hygiene around the water jugs puts the entire trip at risk.
Potable water is available at the put-in for many of the most popular western rivers. Also, with a little research you can find sources at ranches, river stores, and springs to allow you to restock your water supply midway through the trip. If you plan properly, you can make due with these sources. But be sure to carry filters. Personally, I will drink out of a spring or side stream if I can get a good read on the source of that water. If it's coming crashing down a steep hillside and there is zero chance of creatures living in it upstream, and if I need to, I'll drink it. But mostly we filter from side streams to refill our jugs. The same precautions for handling water jugs apply to handling the filtration equipment.