Scenario · 18 entries
Water outage
The tap is dry, or the water is no longer safe.
Stored water buys time. A way to make more safe water is what ends the problem: a filter, a chemical treatment, and containers to move and hold it.
Start with the full guide
Master guideWater purification methodsMaking water safe: calcium hypochlorite treatment, well water risks, water testing tools, and what to do when city water is cut off.Open the full page Master guideWater: storage and purificationHow much water to store, how to store it, and how to make more safe to drink when the stored supply runs low.Open the full page Master guideHygiene and Sanitation When the Water Is OffWhat to do when the water goes off: bucket toilet, hand washing, waste, body, teeth, laundry, dishes, disinfecting, and pests, with the shelf item and recipe page for every job.Open the full page
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Formulas 11
Water · Formula
Ascorbic acid to dechlorinate water and supply vitamin C
Ascorbic acid powder gives you a shelf-stable vitamin C source and a simple way to neutralize chlorine in treated drinking water.
Hygiene and Sanitation · Formula
Baking soda field scrub for body odor
How to use baking soda as a dry deodorant, a scrub paste or an oil-based deodorant cream when soap and showers are not available.
Water · Formula
Disinfect water barrels and cisterns with calcium hypochlorite
Strength: ~200 ppm; Solution: 2 gal per 10 gal; Contact: 6-24 hours
Hygiene and Sanitation · Formula
Foot powder for moisture and friction (baking soda, cornstarch)
Used to reduce foot moisture, friction, and odor in situations where hygiene is limited and foot care is essential, such as during long hikes, shelter stays, or off-grid living.
Hygiene and Sanitation · Formula
Freshen bedding and sleeping pads without washing (vinegar, sun)
Foam pads, sleeping bags, and boots harbor bacteria in places you cannot easily wash with soap and water.
Water · Formula
Improve the taste of treated or stored water (baking soda)
Dose: pinch / quart; Per gallon: ¼-½ tsp; When: after full treatment
Hygiene and Sanitation · Formula
Mattress, fabric and upholstery freshener (baking soda)
How to use baking soda to pull odors and moisture out of mattresses, cushions, sleeping pads and upholstery when washing is not possible.
Water · Formula
Purify water with calcium hypochlorite (pool shock)
Stock: ~1,000 ppm; Dose: 1 tbsp stock / gal; Wait: 30 minutes
Water · Formula
Purify water with Lugol's iodine (2%)
Clear water: 5 drops / quart; Cloudy/cold: 10 drops / quart; Per gallon: 20-40 drops
Compounds and Cleaning · Formula
Surface disinfectant from calcium hypochlorite (pool shock)
Dose: 1½ tsp / gallon; Strength: ~1,000 ppm; Dwell time: 1-10 min wet
Hygiene and Sanitation · Formula
Vinegar deodorant and fabric freshener spray
Vinegar's acetic acid kills the bacteria that produce body and fabric odor, making it a practical substitute for commercial deodorants and fabric fresheners when those products are unavailable.
Skills 1
Guides 6
Power and Light · Guide
Blackout guide: first 45 minutes, first 3 days, and beyond
Fill every container with water first; a bathtub holds 40 to 80 gallons
Water · Guide
How water becomes unsafe (contamination risks)
Store at least one gallon per person per day; replace stored water every six months
Kits and Planning · Guide
Survival bucket for under $300 from Walmart
Everything fits in one 5 gallon bucket and costs under $300 at Walmart
Kits and Planning · Guide
Survival supplies for flood victims
Clean drinking water is the most critical need after a flood
Water · Guide
Water purification methods
Store 1 gallon of water per person per day: three days bare minimum, two weeks the target
Water · Guide
Water: Storage and Purification
Store one gallon per person per day, half for drinking and half for hygiene, and aim for at least a two-week supply at home. When stored water runs low, know how to make more safe to drink.
Nothing matches those filters.
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