After heavy rain, the last thing you want is to see pools of water collecting around your garden, damaging plants, or even threatening your home’s foundations. Installing a stormwater pit in backyard is an effective solution to control and redirect excess water away from your property, helping to prevent erosion, waterlogging, and structural damage. In this guide, we’ll walk you through installing a stormwater pit so you can keep your backyard safe, dry, and ready to enjoy.
Why Install a Stormwater Pit in Backyard?
A stormwater pit is a small reservoir designed to collect and redirect water runoff. Once the water enters the pit, it’s directed to a drainage system, usually through a network of pipes, preventing pooling in your yard. Proper stormwater management helps protect your landscaping and supports healthy soil and plant growth by preventing waterlogged areas.
A stormwater pit is a practical and affordable solution for those who experience frequent rain or own a property prone to water accumulation. If you’re ready to tackle this project, follow these steps to install a stormwater pit in backyard effectively.
Tools and Materials Needed
Before you get started, gather the following tools and materials:
- Stormwater pit (size will depend on your needs)
- PVC pipes and fittings
- Shovel and spade
- Gravel or crushed stone
- Level
- Safety gloves and goggles
- Hacksaw or PVC cutter
- Waterproof adhesive or PVC primer and cement
- Tape measure
Step 1: Choose the Right Location
The first step in installing a stormwater pit in your backyard is choosing the optimal location. Select an area where water naturally accumulates or flows during rainfall. Ideally, the pit should be located away from your house’s foundation to prevent water from pooling close to your home. Ensure the location has an easy pathway to direct the water to your property’s drainage system.
Using a tape measure, outline the size of the pit to get a sense of how much space you’ll need for digging.
Step 2: Dig the Hole
Once you’ve chosen the location, it’s time to start digging. The hole should be slightly larger than the dimensions of the stormwater pit to allow for gravel placement. Generally, you’ll need to dig about 30–40 cm deeper than the height of the pit to ensure adequate drainage.
- Tip: If your soil is particularly hard or rocky, you may want to use a spade or heavy-duty shovel. Keep the sides of the hole as close as possible, and check with a level to ensure the bottom is flat.
As you dig, remove rocks and other debris that can obstruct the flow of water in the drainage pit.
Step 3: Add Gravel for Drainage
Adding a layer of gravel to the bottom of the hole is essential for improving drainage and stability. This base layer will support the pit and help filter out sediment from the water.
Spread a layer of gravel or crushed stone about 10–15 cm deep at the bottom of the hole. Use a level to ensure it’s even, which will help your stormwater pit sit securely.
Step 4: Position the Stormwater Pit
With the gravel base in place, carefully lower the stormwater pit into the hole. Make sure it is level and adjust the gravel if needed to stabilise it. The top of the pit should be just slightly below ground level, allowing you to cover it with soil or gravel once the installation is complete.
- Tip: Some stormwater pits come with built-in filters or grates. Ensure these are in place, as they prevent debris from clogging the pit and drainage pipes.
Step 5: Connect the Drainage Pipes
It’s time to connect the stormwater pit to your backyard drainage system. PVC pipes are commonly used for this, as they’re durable and corrosion-resistant. Measure the length needed to reach the drainage point and cut the PVC pipe to fit.
- Install the Pipe: Attach the pipe to the outlet on the stormwater pit. Apply waterproof adhesive or use PVC primer and cement to secure the connection tightly.
- Check for Leaks: After fitting the pipe, check the connection for gaps or loose areas that might allow water to seep. Apply additional adhesive if needed to create a watertight seal.
Once connected, the pipe should gently slope away from the pit to ensure gravity aids in efficient water drainage.
Step 6: Backfill and Cover the Area
With the pit and pipes securely in place, backfill the hole around the stormwater pit. Use gravel or crushed stone around the sides of the pit for added stability and drainage support. This will help water drain into the pit efficiently, avoiding clogs or blockages.
- Cover the Top: For a seamless look, cover the area around the stormwater pit with soil or additional gravel. If the pit is close to a grassy area, add turf over the soil to blend it with your landscape.
Backfilling properly ensures the pit stays in place and that water flows smoothly into the drainage pipe.
Step 7: Test Your Stormwater Pit
Once installed, test your stormwater pit by running water through it, using a garden hose or waiting for rainfall. Observe how water flows into the pit and through the drainage pipes to ensure no leaks or blockages. The water should flow smoothly from the pit to the drainage system, keeping your backyard dry and free from standing water.
If you encounter any issues or are unsure about your installation, consult a professional plumber. Our experts at Ezy-Plumb can inspect your stormwater pit and ensure it’s set up for efficient drainage.
Maintenance Tips for Your Stormwater Pit
Regular maintenance can help extend the life of your stormwater pit and keep it functioning effectively. Here are a few tips:
- Clear Debris: Periodically check the pit for leaves, dirt, or other debris that could clog the system. Clean it out as needed, especially after heavy rain.
- Inspect the Pipes: Check the PVC pipes for any signs of wear or blockages and replace them if necessary.
- Check the Gravel: Gravel around the pit may shift or settle over time. Add more gravel if needed to maintain stability and drainage.
Final Thoughts
Installing a stormwater pit in the backyard is a straightforward project that can significantly benefit your property. By managing excess rainwater effectively, you can protect your landscaping, prevent soil erosion, and avoid damage to your home’s foundation. With the right tools, materials, and know-how, you can complete this project confidently and enjoy a well-drained, beautiful backyard.
For professional assistance with your stormwater system, contact the team at Ezy-Plumb. Our experienced plumbers can install stormwater pits, provide drainage solutions, and maintain them, ensuring your backyard stays dry and protected.
