Quick Answer
To calculate the necessary tank size for your property, consider your daily water usage, the water pressure required, and the maximum volume of the tank. A general rule of thumb is to size the tank to hold 1-2 gallons of water per square foot of roof area. This will help ensure adequate pressure for your fixtures and appliances.
Calculating Daily Water Usage
Calculating your daily water usage is the first step in determining the necessary tank size. To do this, track your water usage over a one-day period. Include usage from all sources, such as faucets, toilets, showers, and appliances. A typical household uses around 80-100 gallons of water per day. Based on this number, you can calculate the required tank size. For example, if your household uses 90 gallons per day, you’ll need a tank that can hold at least 90 gallons.
Considering Water Pressure Requirements
The required water pressure for your fixtures and appliances will also impact the necessary tank size. For most households, a pressure range of 30-50 PSI is sufficient. However, if you have high-pressure appliances, such as a car wash or a large pool, you may need a higher pressure. To determine the required tank size, consult with a professional or use a water pressure calculator to determine the correct tank size for your specific needs.
Sizing the Tank for Maximum Volume
When sizing the tank for maximum volume, consider the total volume of water required to meet your daily needs, plus a 10-20% buffer to account for variations in usage and potential leaks. For example, if your daily water usage is 90 gallons, you may want to size the tank to hold 108-120 gallons (90 x 1.2). This will ensure that you have enough water storage to meet your needs, even during periods of high usage.
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