Choosing the right rainwater tank involves a few key steps to ensure it meets your needs and complies with regulations. Here's a guide based on the provided information:
1. Determine the Tank's Purpose
First, consider how you'll use the collected rainwater. This will significantly influence the tank's size and type. Examples include:
- Garden Irrigation: For watering lawns and plants.
- Toilet Flushing: To reduce water consumption in the household.
- Laundry: For washing clothes.
- Household Use: For all purposes including drinking (with appropriate filtration).
2. Calculate the Required Size
The size of your rainwater tank should be based on two factors: your water needs and how much rainwater you can realistically collect.
- Water Usage: Estimate how much water you use for the intended purpose over a period of time.
- For example, calculate daily usage for garden irrigation.
- Rainwater Collection: Consider your local rainfall patterns.
- Calculate the roof area contributing to water collection.
- Factor in local rainfall averages.
- A larger tank is generally beneficial to store water during rainy periods for use during drier times.
3. Choose the Tank Type
Several types of rainwater tanks are available, each with its benefits and drawbacks. Common options include:
| Type | Description |
|---|---|
| Polyethylene | Lightweight, relatively inexpensive, and easy to install. Suitable for most domestic uses. |
| Steel | Durable and available in large sizes; can be more costly than polyethylene. |
| Concrete | Very durable but heavy and can be difficult to install; good for underground tanks. |
| Bladder | Flexible and collapsible, suitable for tight spaces; often used for temporary storage or in crawl spaces. |
| Underground Tanks | Installed below ground; conserve space and have a more consistent temperature, reducing evaporation. |
4. Abide by Regulations
Ensure your rainwater tank installation complies with local regulations and building codes. These regulations might cover:
- Tank Size Restrictions: Check for maximum tank size allowances.
- Plumbing Requirements: See if specific plumbing codes need to be followed.
- Installation Guidelines: Ensure correct installation methods to avoid contamination.
- Permits: Obtain necessary approvals before commencing installation.
By following these steps, you can select the best rainwater tank to meet your specific requirements and contribute to a sustainable lifestyle.
