OFF Grid Journal

Water

Emergency Water: Storage, Rainwater and Purification

A household can improvise light, heat and food for days. It cannot improvise water. FEMA and Ready.gov set the baseline at one gallon per person per day, with three days as the minimum and two weeks as the working target.

These guides build that capability in three layers: catch it (rain barrels, first-flush diverters, gravity systems with no pump), clean it (filters and disinfection, with the limits of each method stated plainly) and keep it (storage, rotation and winter protection). Start with how much you need, then work outward.

All water guides

A gray clapboard farmhouse in winter with a rain barrel at the downspout, a covered woodpile and a ground-mounted solar array beside a fenced garden Water Does water work during a power outage? City taps, wells and the first hour Whether your taps keep running depends on where your water comes from, and the first twenty minutes decide how much of it you keep. A blue 55-gallon rain barrel on two concrete blocks under a white downspout, with a metal watering can on the gravel beside it Water How to set up a rain barrel: blocks, spigot, diverter and overflow One barrel, one spigot, two concrete blocks: the setup takes under an hour, and the most common mistake costs nothing to avoid. A first flush diverter made of white PVC pipe teed into a gray downspout, feeding a black rain barrel on concrete blocks through a hose Water First flush diverter: how it works, how to size it and how to build one The first water off a roof carries the worst of what sits on it. A length of PVC pipe and a floating ball keep it out of your barrel. Three black rain barrels on a row of concrete blocks along a wooden fence, joined by black pipe near their base, with a hose running off across the yard Water How to connect rain barrels together so they fill and drain as one tank One barrel proves the system. A chain of three, linked the right way, turns it into a 165-gallon tank with one tap. A white two-bucket gravity water filter with a plastic spigot on a kitchen counter, next to a glass of clear filtered water Water DIY water filter for drinking: the two-bucket ceramic build and its limits Two stacked buckets and a ceramic element turn stored or harvested water into clear water with nothing but gravity. It is half of the job. A blue plastic drum labeled Water Filter - Biosand in a garage, with clear outlet tubing running from its top into a bucket on the floor Water Biosand filter: how it works, how to build one, and what it cannot do A column of washed sand and gravel, kept wet, grows its own filter. It needs weeks to start and daily feeding, and it rewards both. Blue 5-gallon water containers labeled Emergency Water - Potable with fill dates, stacked on a wooden pallet and shelf in a basement Water How much water per person per day in an emergency, and how to store it The number is smaller than people fear, and the container choice matters more than the size of the stockpile. A steel stock pot, a small brown dropper bottle and a handwritten disinfection card on a stand, on a butcher-block counter beside a kitchen sink Water How to purify water with bleach: the exact ratio, and when it isn't enough Eight drops, thirty minutes, and a card on the counter so nobody has to remember the numbers in the dark. Black-painted mason jars sealed in clear plastic bags, lined up on a weathered deck railing in front of a foil windshield sun reflector Water Solar water pasteurization: safe water from sun, a black jar and a wax indicator Water doesn't have to boil to be safe. It has to get hot enough, and a small wax indicator tells you when it has. Three gray 5-gallon buckets labeled in black marker and a tan wash basin holding a mesh strainer, on the floor beside an open sink cabinet Water A greywater system for home that needs no plumbing: the bucket loop In a week without running water, the toilet is where drinking water goes to die. Three labeled buckets fix that. A black plastic rain barrel with a brass spigot tipped onto a wood block in frosty grass, half covered by a torn insulated cover, beside a wooden fence with a rake and gloves Water How to winterize a rain barrel before the first hard freeze Ice needs somewhere to go. One fall afternoon decides whether your barrels see spring. Water test strips, a sample vial, a mail-in laboratory kit and a glass of water on a wooden kitchen table beside a notebook of handwritten pH and iron readings Water How to test well water: what to test, how often, and how to keep a log You can't see bacteria, lead or nitrates. A test turns "probably fine" into a number, and a log tells you when the number moves. A white plastic water tank with a brass spigot and green hose, sitting on a cross-braced wooden stand in a gravel side yard beside a house Water Gravity fed water system: how high the tank goes, what pressure you get, and how to build it safely Raise the water and every tap in the loop works without a pump. Height is pressure, and weight is the hazard.
The Off-Grid Handbook by Garrett Dalton

The book behind the Journal

The Off-Grid Handbook

Every guide in the Journal is built on one project from a single printed book: 75 projects across water, power, food, heat and readiness, each one built, tested and photographed by hand by Garrett Dalton, former U.S. Navy SEAL, before it earned a page.

Cost, time and difficulty at the top of every project. A photograph for every step.

See the Handbook

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