Water Storage Solutions: Choosing the Right Tanks and Containers

The most common materials for water storage are food-grade plastic, stainless steel, and galvanized steel. Each has its pros and cons:

• Food-Grade Plastic: Relatively inexpensive and lightweight, these tanks are easy to transport and install. However, they are susceptible to UV degradation over time, potentially leaching chemicals into the water if exposed to prolonged sunlight. Look for tanks with UV inhibitors added to the plastic. Always check for FDA approval to ensure it’s suitable for potable water.

• Stainless Steel: The gold standard for water storage. Stainless steel is incredibly durable, resistant to corrosion and algae growth, and won’t leach chemicals. It’s a significant investment upfront, but the longevity makes it worthwhile. Consider the gauge (thickness) of the steel; thicker is stronger and more resistant to dents.

• Galvanized Steel: More affordable than stainless steel, galvanized steel offers good protection against rust. However, the zinc coating can leach into the water over time, especially if the tank is new. This is generally considered safe in small amounts, but it’s best to avoid galvanized steel for long-term storage if possible. A thorough cleaning and rinsing of a new galvanized tank is recommended before use. There are also galvanized steel tanks that have an internal rubber liner.

Capacity and Configuration:

Consider your water needs when choosing tank capacity. Factor in daily consumption for drinking, cooking, cleaning, and hygiene, plus a safety margin for emergencies. Think about the space you have available and whether you need multiple smaller tanks or one large tank.

Hack: Consider multiple tanks that can be isolated for cleaning/repair without taking the whole system off-line.

Placement is also key. Elevate your tanks if possible to create gravity-fed pressure for easier dispensing. If you have a hill on your property, that is ideal for a water storage tank.

Every 2.3-ft of vertical elevation is equivalent to 1 psi of pressure. So, if your tank is elevated 30-ft, that will give you about 13 psi of pressure (30/2.3).

Consider proximity to your home for ease of access and protection from the elements. Proper drainage around the tanks is crucial to prevent flooding damage in an overflow event.

Maintenance and Cleaning:

Regular maintenance is crucial to prevent contamination and prolong the lifespan of your tanks. Inspect tanks regularly for leaks, cracks, or damage. Clean your tanks periodically, using a food-grade cleaner and thoroughly rinsing with clean water. For larger tanks, consider using a tank cleaning brush and a pump to remove sediment. Algae growth is a common issue, especially in warmer climates. Keep tanks covered to prevent sunlight penetration and maintain water quality.

Choosing the right water storage solution depends on your individual needs, budget, and available resources. By considering the factors above, you can ensure you have a reliable and safe water supply for years to come, empowering your off-grid lifestyle.