Utah's Earthquake Risk and Water Infrastructure
The Wasatch Front — where roughly 80% of Utah's population lives, including Salt Lake City, Provo, and Ogden — sits along the Wasatch Fault Zone, a 240-mile-long normal fault that geologists consider one of the most hazardous seismic zones in the United States. The Utah Geological Survey estimates a 43% probability of a magnitude 6.75 or greater earthquake on the Wasatch Front within the next 50 years. A major event could cause $33 billion in property damage and is expected to rupture water mains throughout the Salt Lake Valley, potentially leaving residents without tap water for days to weeks.
FEMA and the Utah Division of Emergency Management both recommend that households maintain a minimum of 72 hours of drinking water on hand — one gallon per person per day, plus additional water for sanitation and cooking. For a family of four, that is 12 gallons minimum. But emergency management professionals increasingly recommend two weeks of supply, which for a family of four is 56 gallons of drinking water plus significant additional amounts for hygiene and cooking. A single 275-gallon food-grade IBC tote, properly prepared, provides enough drinking water for a family of four for more than two months.
Why IBC Totes Are Ideal for Emergency Water Storage
When comparing water storage options, IBC totes offer several significant advantages over alternatives like 55-gallon drums or commercially bottled water:
- Volume efficiency: A single 275-gallon IBC occupies a 48" x 40" footprint — roughly the same as a standard pallet. The same volume in 55-gallon drums would require five drums occupying three times as much floor space.
- Cost per gallon: A clean, reconditioned food-grade IBC from Salt Lake IBC costs $150 to $250 depending on condition, or roughly $0.55 to $0.90 per gallon of storage capacity. Commercially bottled water in 5-gallon jugs runs $1.50 to $2.00 per gallon and has a 1 to 5 year shelf life requiring replacement.
- Gravity-fed dispensing: The bottom butterfly valve on an IBC allows water to be dispensed by gravity into buckets, jugs, or portable tanks without any pump. After a major earthquake, electrical power for pumps cannot be assumed.
- HDPE food-grade container: HDPE does not impart taste or odor to stored water and does not support microbial growth if kept clean and sealed.
Selecting the Right IBC for Water Storage
For emergency water storage, only use IBCs with documented food-grade previous contents. The ideal previous contents are: pure water, juice, soft drink concentrate, food-grade vinegar, or food-grade corn syrup. IBCs that previously held chemicals, agricultural products, or petroleum are not suitable for water storage regardless of how thoroughly they appear to have been cleaned.
When inspecting a tote for water storage, check that the HDPE bottle has no cracks, discoloration, or deformation; that the top fill cap seals tightly with an intact gasket; and that the bottom butterfly valve opens and closes smoothly and does not drip when closed. A valve that weeps even slightly will drain your stored supply over time and contaminate the area around the tote.
Filling and Treating Your IBC Water Supply
Before filling, clean the IBC thoroughly with a food-grade sanitizer. A solution of 1 tablespoon of unscented household bleach (5.25% to 8.25% sodium hypochlorite) per gallon of water, rinsed throughout the bottle interior and through the valve, is effective and safe. Fill with the cleanest available water — municipal tap water from a chlorinated supply is ideal, as it is already treated and tested.
Once filled, add water treatment to ensure long-term storage stability. FEMA and the EPA recommend treating stored water with unscented liquid chlorine bleach at a rate of 8 drops (approximately 1/8 teaspoon) per gallon of water when using bleach with 6% sodium hypochlorite. For a 275-gallon IBC, this works out to approximately 2,200 drops or roughly 1.5 fluid ounces of bleach. Seal the IBC tightly after treatment.
The CDC recommends replacing stored water every 6 to 12 months. With an IBC, "replacing" can mean pumping the old supply onto your lawn or garden (it is still perfectly good for irrigation) and refilling from the tap — a 10-minute job once or twice a year.
Siting and Positioning Your Storage IBC
Where you place your emergency water IBC matters enormously, especially in earthquake country. Consider these factors:
- Accessible after a seismic event: Avoid placing the tote inside a garage that may become inaccessible if the garage door is jammed by structural movement. A carport, exterior side yard, or standalone outbuilding is preferable.
- Shaded from direct summer sun: UV exposure degrades HDPE over time and can promote algae growth in stored water. A north-facing wall or shade structure is ideal.
- Secured against tipping: A full 275-gallon IBC weighs approximately 2,300 pounds, so it is unlikely to tip in normal circumstances, but it should be placed on a level, firm surface. Do not store a full IBC on a sloped driveway or soft soil.
- Protected from freezing: In Utah winters, an outdoor water storage IBC is at risk of freeze damage. Either drain partially (leaving the valve slightly open so expansion has somewhere to go), insulate the tote as described in our winterization guide, or store it in a heated or semi-heated space.
Accessing Your Water After a Disaster
The beauty of an IBC tote for emergency water is the gravity-fed access the bottom valve provides. Even with no electricity, no pump, and no pressure, you can fill a 5-gallon bucket directly from the valve in about 30 seconds. To dispense water more precisely, attach a garden hose or a short length of 3/4-inch hose with a ball valve to the IBC outlet — this gives you control over flow rate without needing to hold a container under the full-open valve.
Consider pre-purchasing a few accessories before any emergency: a short garden hose adapter for the standard 2-inch IBC valve thread, a water filter such as a Berkey or Sawyer for added safety with older stored water, and a battery-powered pump if you need to move water uphill or into pressurized containers. All of these items are inexpensive and can be stored alongside the IBC for immediate deployment.
Utah's emergency management community increasingly encourages neighborhood-level preparedness in addition to household-level planning. An IBC tote on every block, coordinated through a neighborhood emergency response team, can provide a local water distribution point for neighbors who were less prepared — a community resilience model that makes everyone safer when a major seismic event eventually arrives.