Knysna gets good rain. Most of it runs off the roof and down the drain. Rainwater harvesting catches that water so you can use it later. It cuts your municipal bill and keeps you going when the taps run dry.
This guide keeps it simple. It is written for homes, not engineers.
Why harvest rainwater?
Three reasons stand out. You save money on water. You have a backup when supply is cut. And you take pressure off the town's water system. For gardens, a tank pays for itself fast.
What a basic system needs
- A roof and gutters. Clean gutters feed the tank. Most homes already have them.
- A downpipe and filter. A simple mesh keeps leaves out.
- A first-flush device. This throws away the first dirty water off the roof, so your tank stays cleaner.
- A tank. Sizes run from 1,000L to 5,000L for most homes.
Not sure what size tank you need? Our guide on choosing the right water tank size walks you through it step by step.
How much does it cost?
A small setup with a 1,000L tank is entry level. A larger 5,000L system with good gutters and a first-flush costs more but stores far more water. We quote each home to its roof and needs, so you only pay for what fits.
Keep it clean
Clear your gutters before the rainy season. Check the mesh filter now and then. Empty the first-flush after big storms. That is most of the work.
Want it done properly the first time? Kondebe installs full rainwater systems across Knysna — see our water and sanitation services or ask us for a quote.