The Great Southern region of Western Australia is renowned for its stunning landscapes, from rolling hills to rugged coastlines. It’s also a region where water conservation is not just a good idea, but a necessity. Reusing shower water, often referred to as greywater, is a fantastic way to contribute to water sustainability while giving your garden a vital boost, especially during drier periods. Let’s dive into how you can effectively reuse your shower water for your Great Southern garden.
Why Shower Water is Garden Gold
Your shower water, excluding water from the kitchen sink or toilet (blackwater), is surprisingly beneficial for your garden. It contains residual soaps, shampoos, and conditioners that, when used mindfully, can provide a mild nutrient boost to your soil. More importantly, it’s a direct way to significantly reduce your reliance on precious scheme water. Imagine watering your beloved native shrubs and vibrant flowerbeds with water that would otherwise go down the drain!
Understanding What Goes Down the Drain
Before you start diverting, it’s crucial to know what’s safe to reuse. Shower water is generally considered safe for irrigation, but the type of products you use makes a big difference.
Choose Your Products Wisely:
- Low-Sodium and Phosphate-Free: Opt for biodegradable soaps, shampoos, and conditioners that are low in sodium and phosphates. These are less likely to harm your soil or plants.
- Avoid Harsh Chemicals: Steer clear of products containing bleach, boron, or strong antibacterial agents, as these can be toxic to plants and soil microbes.
- No Faecal Matter: Never reuse water if the shower has been used to rinse anything soiled with faecal matter.
Simple Ways to Reuse Shower Water
You don’t necessarily need a complex, expensive system. Here are a few straightforward methods suitable for Great Southern residents:
1. The Bucket Method (Manual Diversion)
This is the simplest and most accessible method. Keep a bucket in your shower. As the water heats up, collect the initial cold water. You can also collect water from your shower during use. Once you’ve collected a bucket (or more), simply carry it out and water your plants. This is best for immediate use and for targeting specific plants or areas of your garden.
2. Basic Greywater Diversion System
For a more continuous approach, consider a simple diversion system. This usually involves installing a diverter valve on your shower outlet pipe. When you want to use the water for your garden, you simply turn the valve, diverting the water through a pipe to a designated area or a simple mulch basin. This often involves a basic filter (like a mesh screen) to catch hair and lint.
3. Sub-Surface Irrigation
This is a more advanced but highly effective method. Greywater is diverted and filtered, then distributed through underground pipes with small perforations. This method delivers water directly to the plant roots, minimising evaporation and reducing the risk of surface odours or plant diseases. It’s ideal for established garden beds and trees.
Important Considerations for the Great Southern
Local Regulations
Always check with your local Shire council in the Great Southern region. They will have specific guidelines and regulations regarding greywater reuse. Some areas may have restrictions or require specific types of systems. Getting approval upfront can save you a lot of hassle.
Soil and Drainage
The Great Southern region has varied soil types. Understanding your soil’s drainage is crucial. Sandy soils drain quickly, while clay soils can become waterlogged. Ensure your greywater system is designed to suit your soil type to prevent waterlogging and ensure effective infiltration.
Plant Selection is Key
Native Western Australian plants are your best friends when it comes to greywater irrigation. They are adapted to our climate and often more tolerant of varying water quality. Plants like Kangaroo Paws, various Eucalypts, and coastal natives are excellent choices. Avoid using greywater on edible plants where the produce might come into direct contact with the irrigated soil, for health and safety reasons.
Maintenance Matters
Regularly clean any filters to prevent blockages. Inspect your diversion points and irrigation lines for any issues. Simple systems require less maintenance, but consistent checks ensure they function efficiently and safely.
Getting Started
Start small with the bucket method to understand how your garden responds. If you’re considering a more permanent system, consult with a local plumber or a water-wise specialist who understands the nuances of greywater systems in regional WA. Reusing shower water is a practical and rewarding way to conserve water, support your Great Southern garden, and contribute to a more sustainable future for our beautiful region.