What size water tank do i need?
Maximizing Water Efficiency starts with choosing the right tank.
- Shower: Water consumption is calculated as Shower Duration (in minutes) × Water Flow Rate (15 liters/minute).
- Toilet: Total flushes per day × 6 liters per flush.
- Appliances: Water per load for dishwashers (30 liters) and washing machines (85 liters) based on average usage.
- Miscellaneous: Includes garden hoses and drinking water per person.
- Awareness: Learn about your personal or household water consumption patterns.
- Cost Saving: Use the data to reduce wastage and lower water bills, keeping in mind that the estimates are approximate.
- Environmental Impact: Contribute to water conservation efforts by managing your usage efficiently.
- Rainwater Tank Size Based on Catchment Area: This calculator determines the ideal size of a rainwater tank based on the catchment area, efficiency of the catchment system, annual rainfall, and the percentage of water needs. Suitable for those looking to install new systems or upgrade existing ones.
Calculation Method:
- Catchment Area: Area in square meters.
- Efficiency of Catchment: Typically 90% or user-defined.
- Rainfall: Annual rainfall in mm.
- Usage Percentage: Percentage of captured rainwater needed.
- Formula: Catchment Area × Efficiency × Rainfall × Usage Percentage Catchment Area × Efficiency × Rainfall × Usage Percentage
- Rainwater Tank Size Based on Daily Consumption: If you know your daily water usage, this calculator estimates how much of your annual consumption can be met with harvested rainwater, helping you size your tank accordingly.
Calculation Method:
- Daily Water Consumption: Total daily water usage in liters.
- Percentage Required Yearly: Expected percentage of annual water needs.
- Formula: Daily Consumption × 365 × Percentage Required Daily Consumption × 365 × Percentage Required
- Sustainability: Enhance your home’s sustainability by utilizing rainwater for non-potable uses like irrigation and flushing toilets.
- Resilience: Increase your home’s resilience to water shortages and restrictions.
- Cost-Efficiency: Reduce your water utility costs by supplementing your supply with rainwater, using our approximate calculations as a starting point for planning.
Calculate Your Water Needs
Calculate by your Water Consumption:
Plan your rainwater storage needs with precision. Our rainwater tank size calculator helps you estimate the ideal tank size based on your daily water consumption and the percentage of annual water needs you plan to meet with harvested rainwater. This tool is ideal for ensuring sustainable water usage in residential properties, promoting water conservation, and helping you save and utilize natural resources effectively. Use our Household Consumption Calculator to find out how much water you use each day and consider how much of your water needs you will rely on a tank for throughout the year, inputting that as a percentage.
Daily Total Water Consumption (litres): Percentage of Water Required Yearly (%):
Calculate by Rainfall and Catchment Area:
Determine the optimal size for your rainwater tank with our easy-to-use calculator. Just enter your catchment area, efficiency of catchment, annual rainfall, and the percentage of water required yearly. This tool is perfect for homeowners looking to optimize their rainwater harvesting system, reduce their water bill, and ensure sustainable water usage. By calculating the ideal tank size, you can effectively manage your water resources and contribute to water conservation efforts.
Catchment Area (m²): Efficiency of Catchment (%): Annual Rainfall (mm): Percentage of Water Required Yearly (%):
Household Water Consumption Calculator:
Ever wondered, “How much water do I use each day?” Understand your daily water usage with our simple calculator. Enter details like shower time, number of toilet flushes, and appliance use to see your total water consumption. For example, filling the bath uses around 150 litres, while flushing the toilet uses approximately 6 litres. This calculator is great for individuals or families aiming to monitor and manage their water intake, promoting water conservation, cost savings, and a positive environmental impact.
Shower (minutes):
Bath (fills):
Toilet (flushes):
Dishwasher (loads):
Washing Machine (loads):
Garden Hose (minute):
Drinking (per person):
Other litres):