Dig and line a well

Reach the water under your feet — sited clean, shored close behind you, roped to a hand above, and never trusting air you cannot see.

hard⏳ a week or two, and never rushedtradition — not yet hand-tested

A stream belongs to everyone upstream of you — every animal, every neighbour, every dead thing you cannot see. And in a dry year it leaves. Under your feet, meanwhile, there is usually water: filtered by the ground itself, steadier through the seasons, and yours. Digging down to it is the oldest reason a village stays in one place instead of following the rain.

It is also the most dangerous work in this book, and the reason is worth saying plainly before you read another line. Both of the things that kill here are silent, fast, and take the rescuer as readily as the digger. A wall of earth that stood all morning arrives in a second and does not let go. Air that looks exactly like air puts a person to sleep at the bottom of a hole nobody can reach into. Neither announces itself. Wells do not usually kill one person; they kill two or three, one after another, each one climbing down to save the last.

So this page is built around two habits: shore close behind you, and keep a rope on whoever is below. Everything else supports those two.

Read the whole page before you break ground. This is not a craft to learn by finding out.

You need

• Three people, minimum, and never fewer. One below, one at the rope who never leaves it, one resting and watching. The person up top is not a helper — they are the only rescue that exists.
• Two ropes, and never one doing both jobs.
  • The retrieval rope stays tied to whoever is below, from the moment they start down until they are out — it is never untied to pass a bucket, and the top hand never lets go of it. Tie it with a bowline, the loop that never strangles, from the knots guide: a loop that can tighten is forbidden around a person, and a waist loop is worse than useless — it rides up and crushes the chest, and a limp body folds at the middle and jams in the shaft. Pass it under the arms, around the chest, and rig the pull to come from behind the shoulders, so an unconscious person comes up straight and head-up.
  • The work rope on the tripod does the spoil buckets and the lining stone, all day, without ever touching the person.
• A tripod over the mouth — the one from the lifting guide, which is why lifting comes before digging. (If you have already built a wheel-and-axle, a windlass on two forked posts is kinder on the arms. The tripod is enough.)
• Proof you can lift a limp body out — obtained before the first descent. Have someone go deliberately slack on the retrieval rope and haul them. Do it for real. If you cannot lift a slack body out of your shaft from the top, then this site and this rig cannot be dug safely, and no care taken afterwards will change that. Fix the rig or do not dig.
• A ladder, if you can make one, as well as the rope. A rope is a way out for someone with strength left; a ladder is a way out for someone who has just realised they have none.
• Timber, planks, or stout woven hurdles for shoring — enough to line the hole as fast as you dig it, cut and stacked before you start. Shoring you have to stop and go make is shoring that does not get made.
• Stone for the lining — a great deal of it, roughly enough to face the whole shaft. Fired brick is better if you happen to have the kiln and the bricks guides behind you; stone alone has served for thousands of years and asks nothing you have not already learned.
• A short-handled digging tool. Long handles are useless in a shaft.
• A candle or lamp on a string — your air tester. Read the air section below before you trust it, because it answers one question and is blind to two others.
• Something hard over the head of whoever is below. A stone the size of an egg, dropped from the top, arrives like a hammer swing.
• A dry season. Dig when the ground is at its thirstiest — the reason is in How it works, and it decides whether your well survives its first bad summer.

Steps

1. Site it clean, and site it high. Uphill and well away from every latrine, dung heap, animal pen, grave, and soakaway — at least 30 meters (about 30 long steps), and considerably further if the ground slopes toward you, or if the ground is coarse gravel or cracked rock, which carry filth far and fast. This is the same 30 meters the dig-a-latrine guide gives, from the other end of the same rule. It is not a magic distance where germs politely stop; it is a rough, hard-won minimum that assumes ordinary soil and ordinary luck. When in doubt, go further and go higher. Never dig in a hollow that surface water drains into.
2. Read the ground for water. Look where the green stays green late in a dry summer, where reeds or willows grow with no stream to explain them, where the ground dips gently. Ask anyone who has dug nearby how deep they went and what they hit — one honest answer saves you a week.
3. Mark a circle about 1.2 metres across — roughly chest height on you, laid down flat. Wide enough to swing a short tool and to bring a limp body up; narrow enough that the walls can be held. Round, not square: a circle presses against itself and stands, where corners crumble.
4. Dig, and shore within about a metre — always. Dig a metre, line that metre, dig the next. Never let the unsupported face get taller than your own chest, and never tell yourself you will shore it once you are a bit deeper. The stretch you have not shored is the stretch that kills you, and it goes at the moment your back is turned to it.
5. Air, in this order, every time: move it first, then test it, then go down. Never the other way about. A shaft left standing overnight may have gathered gas that a lowered flame would light, so the flame is not what you send in to find out — fresh air is.
   • Move it, and never with fire. Raise and lower a bucket or folded blanket on the work rope, over and over, to drag fresh air down and stir the bad up. Leave the shaft open to the wind; rig a sheet at the mouth to funnel wind in. Bellows and a hollowed pipe beat everything else here. Give it a long time — hours, not minutes, on a still morning.
   • Never light a fire at or in the mouth of a shaft to "draw" it. You would be manufacturing poison and pouring it down the hole — the one poison your candle cannot see.
   • Then test, with the candle on a string, having read "The air" below — because the test answers one question and is blind to two others. Test again every morning, and after every break.
6. Send the spoil up, never sideways. Fill the bucket, signal, let the top hand haul. Whoever hauls never leaves the rope. Pile the spoil well back from the edge — a heap at the lip loads the very ground your shoring is holding, and undoes it.
7. Come up often, and come up before you want to. Air goes bad while people work in it, not only before they climb in: a freshly cut face releases gas, and a digger's own breathing eats the oxygen in a still shaft. Short shifts. The top hand watches for muddle, not for shouting — if the person below is slow to answer, repeats themselves, sounds cheerful about nothing, or seems dreamy, haul them out immediately and argue about it up here. Muddle is the first symptom and the last warning; by the time they know, they cannot climb.
8. Stop at water — carefully. When water seeps in, go a little deeper if you can bail as you dig; that reserve is what carries you through dry years. But breaking into wet sand or gravel is its own emergency: it can boil up through the floor and run, burying legs to the knee in seconds, undermining your shoring from below and filling the shaft faster than anyone hauls. If the floor turns to porridge, if sand starts moving on its own, or if water comes in hard rather than seeping — get out at once, on the rope, and do not go back down that day. Come back and line what you have.
9. Line it, bottom to top — and never let earth stand bare while you do. Lay dry stone against the earth from the bottom up. Take out the temporary shoring only one short stretch at a time, and only immediately before the stone that replaces it goes in — the earth behind it is never left unsupported with a person down there. Stone up, timber out, one arm's reach at a time. The lowest few rings stay loose-laid and unmortared on purpose — the water must come in through them. Above the water line, tighter is better: that stretch is the wall that keeps dirty surface water out.
10. Bring the lining above ground and keep going. Build a wall around the mouth, knee-to-waist high. It stops a child falling in, stops slop and washing water running straight back down into the drinking water, and gives you something to lean the cover against.
11. Slope the ground away and drain it. A hard apron of stone or beaten clay around the mouth, sloping outward, with a channel carrying spilled water well away. Never let a puddle sit against your well.
12. Cover it. Always. A lid, a slab, a board — closed whenever the well is not in use. An open well catches dust, leaves, rain-splash, frogs, and children. Wells drown children more reliably than rivers do, because a well is right there, at home, and always looks solid.
13. One bucket, and it lives on the hook. A single dedicated bucket and rope for drawing, hung up between uses. A bucket set down on the ground and then lowered carries whatever the ground had on it into everyone's water. This small habit is most of what keeps a well clean.
14. Still boil it. A good well is far cleaner than a stream and that is not the same as safe. It is still groundwater, and groundwater still moves. Drinking water gets boiled.

The air

Three different things can be wrong with the air down there. They are not one problem, and one test does not find all three. This is the part people get killed by, so it is worth the minutes.

One — air with the life used out of it. Rot, rust, and still water eat the oxygen, and heavy carbon dioxide settles into the bottom and pushes what is left out. This is the common one, and a flame usually finds it honestly: the flame burns on the same air you do, so it dims and dies down there while you are still up here watching. Lower the candle on a string before every descent, every morning, and after every break — bad air pools quietly overnight in a shaft that was fine yesterday. If the flame dims or goes out, nobody goes down. Not quickly. Not just to look.

But even here the flame has a hole worth knowing, because it is the hole that catches careful people. Where the gas comes from rot or from breathing, each breath of carbon dioxide has replaced a breath of oxygen, so the flame starves at about the point the air turns dangerous and the warning arrives on time. Where the gas instead seeps in out of the ground itself — limestone country, old volcanic ground, some clays — it pushes whole air aside without eating the oxygen first. The oxygen left can still be near enough to ordinary that the candle burns clean and steady in air that is already poisonous with carbon dioxide. If you are digging in limestone or anywhere a neighbour has met "bad air" in a cellar or cave, do not let a bright flame decide for you. Ventilate hard and long anyway, keep the shifts short, and keep the rope on.

Two — air that burns. Wet, airless ground makes marsh gas. Marsh gas is lighter than air, so it does not sit politely in the bottom where you expect it; it drifts, and gathers under lids and in pockets. A flame does not warn you about this one — a flame is how you set it off. If your candle flares, brightens, or stretches tall instead of dying, that is fuel, and you have just lowered a lit flame into it. Draw it up gently, do not send it down again, ventilate for a long time, and get advice from anyone who has dug near you before you go further.

Three — air that poisons, with the candle still burning bright. Two poisons matter here and the flame is blind to both, because both burn happily and leave your candle steady while they kill the person standing next to it.

• The first is carbon monoxide — the same gas a charcoal fire breathes out, the one the smelting and lime guides warn about. It has no smell at all and your body has no alarm for it. This is exactly why you never light a fire at the mouth of a shaft: you would be manufacturing it and feeding it down the hole, invisible to the candle that then certifies the air as good.
• The second smells strongly of rotten eggs — and it plays the cruellest trick in this book. You smell it, and then you stop smelling it, because it deadens your nose within minutes. The smell going away does not mean the gas went away. It usually means you are in more of it. If anyone smells rotten eggs at a shaft, that shaft is finished for the day; nobody goes down to check.

So the honest rule, which is not the comfortable one:

A flame that dies is proof you must not go down. A flame that lives is not proof of anything.

Test with it anyway — a free warning that catches the commonest killer is worth having every single time. But do not let it make you brave. Air at the bottom of a well is made safe by moving it and by keeping a rope on the person in it, never by being cleverly reassured about it.

Watch out

• Never go down to rescue someone who has collapsed at the bottom. This is the rule that saves the second and third life, and it is the hardest thing on this page, because everything in you will say that this time is different. It is not. If the air took them, it takes you in seconds — and now there are two, and someone else is already starting down. Haul on the retrieval rope from the top. That is why it is tied to them. Get air moving, send for help, and keep hauling.
• Unshored earth is the killer, and it is not a slow one. Soil does not creak or lean before it goes; it arrives. An armful of wall weighs like a sack of grain, and a falling stretch of it is a cartload at once — it packs tight as it lands and holds the ribs so they cannot rise to take a breath, which is why it kills without needing to cover a head at all. Nobody is dug out of a collapsed shaft in time. Shoring makes this far less likely; it does not make it impossible, and shored shafts still fail in ground that is running, made-up, or loaded at the lip. Shore anyway, close, always.
• Bad air kills people who feel fine, and the first symptom is not being able to tell. Muddle, cheerfulness, dreaminess — those are the warning, and they arrive after the judgement they would have to be noticed by.
• Rain stops the work. Wet earth is heavier and weaker at the same time, which is the worst pair there is. No digging in the wet, and nobody goes down after heavy rain until it has drained and the walls have been read from the top.
• The lip is part of the hole. Spoil, tools, feet, and animals belong well back.
• A well near a latrine is a slow poisoning of everyone you love. It will not taste wrong or look wrong. It will make the whole village sick, over and over, and nobody will know why. Site it uphill and at least 30 meters away before the first spade goes in — this is the one decision you cannot fix later without digging a whole new well.
• Do not deepen a well in the wet season and think you are done. The water you find then is the highest it will ever be, and the well fails in the summer you need it most.

How it works

Rain does not run off — most of it soaks in. Down it goes, through soil and sand and gravel, until it reaches rock or heavy clay it cannot pass, and there it gathers. There is no underground lake and no cavern down there. The water sits in the countless small gaps between the grains, the way water sits in a bucket of pebbles: the stone is solid, and the water is everywhere in between. Fill that bucket halfway and you can see a level. The ground has a level too, and it is called the water table.

A well is nothing more than a hole dug below that level, so water can seep sideways out of the ground and stand in your hole. That is why the bottom rings of your lining are laid loose and dry — you are not building a tank. You are making a window into water that was already there. And it explains the dry-season rule completely: the table rises and falls with the year, so a hole dug when the table is high is a hole that is dry in August. Dig at the year's thirstiest, and whatever water you find is water that is always there.

The ground has been filtering that water the whole way down, which is why well water is so much clearer than a stream. But filtered is not clean, and the water moves, downhill, slowly. That is the whole of the siting rule: whatever soaks into the ground uphill of you arrives at your well eventually, with no taste and no smell to warn anyone.

Earth has no strength of its own. Rock holds itself up; soil does not. It stands because of a light, temporary grip between grains — a grip that a little damp strengthens and real wet destroys entirely. The wall you dug this morning is not holding. It is hesitating. And soil is heavier than your eye believes: one armful weighs like a sack of grain, and an arriving shaft wall is a cartload of it at once, packing itself around the ribs so they cannot lift to draw breath. That is why shoring the metre you are standing in beats any amount of speed or strength, and why the rope matters even when the air is sweet.

And the air is your fire and your breath, wanting the same thing. A flame and a person need the identical ingredient from air: the part that lets things burn is the part that lets you live. That shared appetite is what makes a candle useful — it starves first, visibly, down there, where the cost of learning is nothing.

But that is also exactly the limit of it. A flame reports on that one ingredient and on nothing else. It has no opinion about poison. Marsh gas it burns as fuel. Carbon monoxide it makes itself. The rotten-egg gas it burns without a flicker. So a candle answers one question — "is there enough air here to live on" — honestly and cheaply, every single time. It cannot answer the other question, which is "is this air safe". Those are two different questions, and the second one has no test you can lower on a string. It has only fresh air, a short shift, a watchful hand above, and a rope.