Creating a Greywater System for an Outdoor Shower
Step 1: Check your Local Laws
The first thing you want to do in this case is find out what your local laws are regarding greywater. Until recently any form of greywater was explicitly illegal in most states. In some states (true to it's name) greywater is still in a legal gray area, some states like Texas and Arizona, however, are loosening their grip on the use of greywater. California recently changed their laws regarding the subject but they generally want you to dispose of it rather than use it.
Step 2: Set Up Your Outdoor Shower
You can typically find an solar powered outdoor shower kit at your local camping supply store. If you can't find one at a camping supply store, look at military surplus stores. These work off of small solar panels that heat the water. After you've set up your outdoor shower place a tub or bin where you will be standing while taking your shower.
Step 3: Use Your PVC Pipe
Take your drill and your rotary tool and make six holes in your bin about a centimeter wider than your PVC pipe. This will allow for a snug fit. Once you've drilled the holes take the PVC pipes and put them in. This is going to create your drip system. All the used water is now going to drip from the bin down the PVC pipes.
Step 4: Place Your Smaller Buckets
The smaller buckets are there to collect the greywater from your bin after you're done with your shower. This is how you keep the used water for further use. Ideally when it comes to greywater you would scale it down for use regarding to task. Meaning the cleaner the task the cleaner the water you should use, but if you don't need absolutely clean water for certain tasks than this is what you would use that water for.
Step 5 Water the Plants
After you've collected your water you're going to want to use it to water your plants or garden. The fact that this water has absorbed certain minerals from the fact that it's been used is also going to make it better for plants because it will now have various natural fertilizers in it.