Overview
Add a downpipe diverter, connect a sealed barrel (with mosquito screen), and route overflow back to a drain or into soil.
Easy€≈200–300 L per stormSuitable for renters
Materials
- Rain barrel (200–300 L) with lid & screen
- Downpipe diverter kit (matching pipe size)
- Flexible hose (25–32 mm) + hose clamps
- Overflow elbow and tubing to drain/soil
- Pavers or stand to raise the barrel
- PTFE tape, silicone sealant
Tools
- Measuring tape, marker
- Hacksaw or pipe cutter
- Drill + hole saw (per kit spec)
- Level, safety gloves, eye protection
Safety & Risks
- Secure the barrel against tipping; keep lid locked (child safety).
- Do not drink stored water; label 'Non-potable'.
- In freezing climates: drain and disconnect for winter.
Maintenance
- Clean screen quarterly; flush sediment yearly.
- Check diverter and hoses after major storms.
- Disinfect with vinegar if odor/algae appears.
Permits / Notes
- Check HOA/VvE facade rules for visible barrels.
- Backflow prevention may be required if connected near potable systems.
Steps
- Measure downpipe height; mark diverter position per kit.
- Cut the downpipe and install the diverter; ensure arrow points downflow.
- Place the barrel on a flat stand; higher = better tap pressure.
- Connect inlet hose from diverter to barrel’s side/top bulkhead.
- Install overflow from barrel to drain or a planted area (never onto walkway).
- Open tap to test; check for leaks and secure the lid/screen.