Reuse of Rainwater: 10 Top Ways to Maximise Your Collected Rain

General view of dark green rain can spraying water onto foliage.

Making the most of heavy rainfall is a practical choice and an excellent way to build up your self-sufficiency skills. The reuse of rainwater has become an essential part of sustainable living. But, how can you best put this rainwater to use in your home?

Reuse of Rainwater: Why it’s Important

Close up view of three plants sitting on the windowsill with a small watering can close by. Watering plants is one of the best reuses of rainwater.
Watering your plants is an excellent way to put your rainwater to good use.

Collected rainwater can be safely reused for non-potable purposes, including irrigating yards and landscapes, cleaning and mopping, watering potted plants, washing vehicles and more.

By capturing and storing rainwater, you can ensure that a considerable amount of water is available for various household and gardening needs and cut down on water bills.

Embracing rainwater as a resource truly opens up a ton of opportunities for reuse, particularly when considering that harvested rainwater can be significantly softer than treated water, which is especially beneficial for plants.

In this article, I’m going to examine the top 10 ways to recycle collected rain, as well as the benefits of rainwater harvesting and how best to collect it.

And, remember that rainwater harvesting doesn’t just serve a functional purpose â€“ it can also be an aesthetic addition, with features such as rain chains and rainwater gardens enhancing the beauty of your property.

Let’s explore the reuse of rainwater in your property!

Table of Contents: Reuse of Rainwater

Reuse of Rainwater: 10 Top Ways to Recycle Collected Rain

Below are 10 practical ways to help you make the most of your harvested rainwater.

1. Flushing Toilets

You can use collected rainwater to flush toilets, significantly lowering your water consumption.

This reuse system is straightforward to integrate and can even save up to 30% of potable water usage in your home!

By implementing rainwater harvesting for toilet flushing, you not only conserve water but also contribute to reducing the strain on municipal water companies.

2. Washing Clothes

Why not use your harvested rainwater for washing clothes?

This will help to cut down on your water bills and also make your clothes much softer than if you run it through washing machines. Washing clothes with rainwater can also prolong the lifespan of your garments by avoiding exposure to harsh chemicals typically found in treated water.

3. Cleaning and Mopping

Tap into your rainwater collection systems for cleaning and mopping around the house!

After all, rainwater is ideal because it’s soft water, meaning it has less lime and minerals than treated water.

And, using rainwater for cleaning tasks not only ensures a thorough clean but also reduces the need for harsh chemical cleaners, promoting a healthier indoor environment for you and your family.

Moreover, the softness of rainwater can prevent streaks and residue on surfaces, resulting in a sparkling clean home.

4. Landscape Irrigation

Irrigate your garden and maintain its appeal using a collection pipe from your rainwater harvesting system. This helps to make your garden vibrant, even during periods of water shortage.

Right now lots of areas are trying to cut down on hosepipe use, sometimes even banning them outright! By reusing your rainwater, you can keep your garden thriving no matter the situation.

5. Car Washing

Save potable water by using a bucket of rainwater to wash your car.

Washing your car with rainwater reduces the risk of water pollution by minimising the use of detergents and chemicals that can harm aquatic ecosystems.

6. Filling Ponds and Fountains

Top up your decorative ponds, fountains, or other water features with rainwater!

This practice can help boost the aesthetic appeal of your outdoor space while promoting sustainable water management practices.

7. Water Plants

Water plants indoors and outdoors with rainwater. Plants respond well to rainwater since it is free from chemicals found in municipal water.

By watering your plants with rainwater, you’re providing them with the purest form of hydration, free from additives and chlorine commonly found in tap water.

This not only promotes healthier plant growth but also minimises the risk of soil contamination and nutrient imbalance, fostering a thriving indoor and outdoor garden.

8. Wash your windows

Rainwater is perfect for a streak-free shine when washing windows. So for clearer views and a bright home, don’t hesitate to dip into your harvested rainwater.

Cleaning your windows with rainwater not only ensures a streak-free finish but also eliminates the need for commercial window cleaners that often contain harsh chemicals.

9. Outdoor Cleaning

Use rainwater for outdoor cleaning tasks such as hosing down outdoor furniture, decks, or even outdoor play equipment. Rainwater’s purity and lack of added chemicals make it an excellent choice for keeping outdoor spaces tidy and pristine.

10. Pet Care

Did you know that the reuse of rainwater can even extend to pet care, such as filling their water bowls or cleaning their living areas.

Rainwater’s natural properties make it safe and suitable for your furry friends, and it also reduces the demand on your household’s potable water supply, benefiting both your pets and the environment.

General view of PVC kitchen windows with a view over two properties.
Washing windows is a great reuse of rainwater in your home!

Benefits of the Reuse of Rainwater

There are many beneifts of the reuse of rainwater, some of which I’ve already touched on.

Let’s dive into a few more…

  • Reduces energy costs associated with water processing and transportation.
  • Manages stormwater runoff, mitigating the risk of erosion and flooding.
  • Rainwater is free of many of the contaminants often found in groundwater.
  • Can help communities boost water supplies, become more water independent and save money.

Reuse of Rainwater: How to Collect Rainwater

It’s possible to collect rainwater no matter where you live â€“ even in the middle of big cities! But, the integration of rainwater harvesting systems is important for success. Here’s a brief guide for setting up rainwater collection systems.

Choose Your Container

  • Simple rain barrels are ideal if you’re dealing with limited space. They come in various sizes, typically storing between 75 to 250 litres of water.
  • You can even use buckets on your balcony or small space. Some of you may have room for a rainwater tank!

System Components

  • Connect a collection pipe from your gutters to direct rainwater into the barrel (or use a rain chain which is a decorative alternative to a downpipe).
  • A first rain separator can ensure water quality by diverting initial runoff, which may contain contaminants, away from your storage.
  • Use a mesh screen to prevent debris and insects from entering.

Maintain Quality and Safety

  • To avoid dirty water, clean your gutters regularly, ensuring only clean rainwater is collected.
  • For storing rainwater, ensure your containers are covered to impede algae growth and prevent mosquito breeding.
  • Regularly check for excess water overflow, and have a plan in place to deal with it! You could even connect your barrel to a rainwater garden or drainage systems.

Using Collected Rainwater

  • Non-potable tasks like watering plants, flushing toilets, and filling water features are suitable uses for harvested rainwater.
  • Remember that unless properly treated, stored rainwater may not be safe for drinking.

By following these steps, you can contribute to water conservation, plus you may see a reduction in your water bills.

Remember, every bucket of rainwater you collect is free water that’s beneficial for your garden and your wallet!

Rain Barrels: A Quick Guide

Close up of a pipe feeding into a green rain barrel with a garden background.
Rain barrels are a simple and effective way of collecting rainwater.

Because rain barrels are such a useful way of collecting rainwater in small spaces, I’m going to take a closer look at how they work.

After all, setting up a rain barrel is pretty straightforward. A rain barrel can be attached directly to a downspout from a gutter, allowing for the collection of rain that falls on the roof.

The simplicity of the system makes it accessible to a wide range of people, regardless of their level of expertise in DIY projects.

Benefits of Using Rain Barrels

Here are some specific advantages of rain barrels over other containers:

  1. Designed for rainwater collection: rain barrels are specifically designed for collecting rainwater, with features such as a screened inlet to prevent debris from entering, a secure lid to keep out contaminants and pests, and a spigot for easy access to the collected water. While other containers may be repurposed for water collection, rain barrels are optimised for this purpose, making them highly efficient.
  2. Large capacity: rain barrels typically have a larger capacity compared to other containers used for water collection, such as buckets or bins. This allows them to capture and store a significant amount of rainwater, providing a reliable supply for watering plants and other outdoor tasks.
  3. Aesthetically pleasing: rain barrels are available in a variety of styles, materials, and colors, allowing homeowners to choose options that complement their landscaping and outdoor aesthetics. Many rain barrels are designed to resemble decorative planters or blend in seamlessly with garden decor, making them a more visually appealing choice compared to traditional containers. But, remember that dark rain barrels are the best to stop rainwater from getting stagnant!
  4. Integrated features: rain barrels often come with integrated features that enhance their functionality and usability, such as overflow outlets to prevent water from backing up and causing damage, built-in hose connectors for easy irrigation, and diverter kits that allow for seamless integration with downspouts. These features make rain barrels a more user-friendly option compared to makeshift containers.
  5. Durability and longevity: rain barrels are usually built from durable materials such as UV-resistant plastic, fiberglass, or galvanised steel, which are designed to withstand outdoor conditions and last for many years. This durability ensures that rain barrels provide a reliable and long-lasting solution for rainwater collection, offering better value for money compared to less robust containers that may degrade over time.

Setting Up A Rain Barrel System

Creating an efficient rain barrel system involves selecting an appropriate barrel, ensuring proper installation and maintenance, and handling overflow properly.

Choosing the Right Rain Barrel

You should consider material, size, and durability when selecting a rain barrel. Plastic barrels are lightweight and cost-effective, whereas wooden or metal barrels can be more aesthetically pleasing but may require additional maintenance.

Capacity is crucial, but remember that a 200-litre barrel is a common choice for domestic use, balancing space and sufficient water collection.

Installation and Maintenance

For installation, one must place the barrel on a solid, level foundation to avoid tipping over. As mentioned earlier, you can add a fine mesh screen on the barrel to prevent debris and insects from entering.

Regular cleaning of the barrel and inspection for leaks are critical for maintenance. In winter, you’ll need to empty and disconnect the barrel to prevent freezing damage.

Overflow Solutions and Water Divergence

To handle excess water, you can connect an overflow hose to the barrel, directing surplus water away from your home. You can even design a rain garden, which is a natural option for managing overflow while benefiting the environment.

Reuse of Rainwater: My Final Thoughts

A rain barrel under a downspout, with a filter and overflow hose, surrounded by plants and a garden, connected to a hose for watering

In your journey to sustainable living, understanding rainwater harvesting systems is crucial. This technique not just aids in addressing water scarcity, but is also a low cost way to use water, reducing bills by providing an alternative water source.

After all, it’s rewarding to know that each bucket of rainwater you collect could contribute to the conservation of water resources (and yes, you can use buckets  â€“ they can be ideal for small spaces for those living in urban areas).

With the right reuse strategies, even different types of rainwater, including greywater, can be effectively recycled for you to put to good use!

And, by minimising your water consumption and integrating reuse systems, you do your bit in easing the global water shortage crisis while enjoying your own palette of free water.

So next time you hear the patter of rain, think of the many ways you can make the most of this precious, natural resource.

Hannah

Hannah is a journalist based in London who is passionate about self-sufficient living and loves exploring how to live independently in urban spaces. When she’s not planting on her balcony and small garden (and working out how to best shield her crops from the erratic UK weather) you can find her exploring the wild outdoors in the home counties or Cornwall.

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