Greywater took about 3 days + prior thinking and planning time (for me that took about 2 years to figure out what I wanted and how to do it.)
1 day to gather materials, do set up and layout.
2 days to trench, lay pipe, and function check.
Lots of good learning, but it boils down to a few simple lessons:
1. Water flows downhill.
2. Buying material and doing it yourself is the cheapest way to do the best job.
3. Thinking about doing it takes much longer than doing it, so it’s worth it to think for a long time.
3. Reading about this was good for inspiration, but learning by doing is the one of the best ways I can pick up a skill, and it opens lots of other creative doors for me: Plumbing the back yard for an outdoor shower, wanting to learn more about plumbing and the high pressure side of it, being stoked to work with my hands on other projects like wiring a new room, and just in general more self-confidence in my trades work.
Brings to mind a great Aristotle quote I saw in Shop Class as Soul Craft:
“Lack of experience diminishes our power of taking a comprehensive view of the admitted facts. Hence those who dwell in intimate association with nature and its phenomena are more able to lay down principles such as to admit of a wide and coherent development; while those whom devotion to abstract discussions has rendered unobservant of facts are too ready to dogmatize on the basis of a few observations.”