From a scoop hole to a protected, shared supply: where the water is, how much you need, and keeping it clean between the source and the mouth.
Secure a source you can reach twice a day, forever, without a fight.
Needs first: nothing — start with bare hands.
Choose by what you have. Tick what is on or near the site. The options you can build move to the top; nothing is hidden.
Nothing ticked: every option is shown in the site's order.
Arrives clean: divert the first flush and cover the store. Yield is roof area × rainfall × 0.8.
Low risk if the catchment above it is kept clean. Box it before you rely on it.
0.5–2 m down, low and seasonal yield, high contamination risk. Treat every litre.
Survey upstream before you drink. Always treat.
Settle and clarify first. Algal blooms carry toxins that boiling concentrates rather than removes.
Cross-listed. Its home is Society, Law & Governance › Public works and administration.
Build the thing everyone needs and nobody owns — and settle who pays for it.
Needs first: Decide how you decide (Society), Find and hold water, Boundary and tenure (Society)
Every guide, build, reference sheet and book reached from the steps above.
Surface water is a treatment problem every single day. Groundwater, reached and sealed properly, is a treatment problem once.
Level 3Water in and on the ground, the air and weather, rocks and time, earthquakes and tsunamis, and the climate: each result with what it lets you do and who first found it.
Level 0The thing that kills first, and the one problem on this site that is completely solved — provided you do it every single day, including the day everyone is exhausted.
Level 0Every public institution an advanced civilisation runs, in the order a rebuilding one can found them: what each is for, when it becomes possible, and the rules that keep it honest, useful and no bigger than its job.
Drawn overview sheets, each with its corrections printed under it. They orient; they are never the thing you identify from.
