Rainwater Harvesting Systems for Homes & Businesses
Clean, stored rainwater — collected from your roof, filtered for use, and available on demand regardless of municipal supply or water restrictions.
Municipal water is becoming less reliable, and more expensive
Water restrictions, ageing infrastructure, and supply failures are an increasing reality across South Africa — and the Garden Route is no exception. A rainwater harvesting system gives you a private, independent water supply collected directly from your roof, stored in tanks on your property, and filtered to the quality your household or business needs.
Whether you want to supplement your municipal supply, reduce your water bill, or achieve complete water independence, we design and install rainwater harvesting systems tailored to your property and usage.
What is a Rainwater Harvesting System?
A rainwater harvesting system collects rainwater from your roof via your gutters, filters out debris and contaminants, and stores it in one or more tanks for use across your property. A pump delivers water on demand to the points where you need it — garden irrigation, toilets, laundry, or with the right filtration, fully potable drinking water throughout the home.
The result:
- Reduced reliance on municipal water supply
- Lower monthly water bills
- A reliable water reserve during restrictions or supply failures
- Complete water independence where the system and rainfall allow
Is a Rainwater Harvesting System Right for You?
Rainwater harvesting systems are ideal for:
Residential homes
Homeowners wanting to reduce their municipal water bill, build a reserve against water restrictions, or achieve full water independence for their property.
Farms & smallholdings
Agricultural properties with high water demand for irrigation, livestock, and operations — where a reliable, independent water supply is essential to the running of the farm.
Guesthouses & Airbnbs
Uninterrupted water supply for guests, regardless of municipal restrictions or pressure failures — protecting your reviews and your reputation.
Businesses
Commercial properties wanting to reduce operating costs, meet sustainability targets, or protect critical operations from municipal supply disruptions.
How it works
1
Site Assessment
We assess your roof catchment area, average local rainfall, water usage, and how you want to use the harvested water — giving us everything needed to design a system correctly sized for your property and demand.
2
System Design
We design a custom rainwater harvesting system — the right tank capacity, filtration level, pump specification, and distribution layout — matched to your actual water needs and intended use, whether that is garden irrigation, household supply, or fully potable water.
3
Installation
Professional installation by experienced water system installers. Guttering, first-flush diverters, filtration, tank placement, pump, pressure system, and full connection to your distribution points — all installed neatly and correctly.
4
Support & Maintenance
Ongoing system checks, filter replacements, tank cleaning, and pump servicing keep your water supply clean and your system performing reliably. We are your long-term water independence partner — not just a once-off installer.
Brendan Proctor
“
For more than 8 years, my family and I have lived completely off-grid on our farm in Keurbooms, Plettenberg Bay, powered entirely by solar energy and harvested rainwater — with no Eskom and no municipal water.
During that time, we have built and connected four homes to a single off-grid system. Three of these homes are very busy Airbnb rentals, providing ongoing real-world testing of the system under varying occupancy and demand.
Living this way every day has given me firsthand insight into what truly works. The solar and water solutions I recommend are based on years of practical experience and a deep understanding of what it takes to achieve reliable, long-term independence.
– Brendan Proctor, Founder of Solarain
Rainwater Harvesting for Farms & Commercial Properties
We design and install scalable rainwater harvesting systems for agricultural and commercial properties across the Garden Route — covering high water demand, irrigation requirements, and the need for a reliable independent supply on working farms and larger sites.
Our commercial rainwater harvesting service includes:
Full site assessment and system design
Tank installation, filtration, and pump systems
Distribution and irrigation integration
Ongoing maintenance and filter servicing
Start Your Journey to Water Independence Today
Whether you want a reserve against water restrictions, a lower monthly water bill, or a completely independent supply for your home or farm — we design and install rainwater harvesting systems for properties across the Garden Route. One complete solution, from design to installation and beyond.
Frequently Asked Questions
A residential rainwater harvesting system typically ranges from R25,000–R80,000 depending on tank capacity, filtration level, pump specification, and the complexity of your distribution layout. We provide a detailed quote after assessing your property and water requirements.
Yes, with the correct filtration. A properly specified multi-stage filtration system — including sediment filtration, activated carbon, and UV sterilisation — produces water that meets potable standards. We design filtration to match your intended use, whether that is garden irrigation, household grey water, or fully potable supply.
Collection volume depends on your roof catchment area and your local rainfall. The Garden Route receives some of the highest rainfall in South Africa, making it one of the most viable regions for rainwater harvesting. We calculate your realistic yield during the site assessment based on your specific roof area and local rainfall data.
A first-flush diverter automatically discards the first flow of water from your roof at the start of rainfall — the water most likely to carry bird droppings, dust, and debris — before directing the cleaner flow that follows into your storage tanks. It is a standard component of any properly designed system and significantly improves the quality of collected water.
Tank sizing depends on your daily water usage, your roof catchment area, and your local rainfall pattern. We size your storage to bridge realistically between rain events and cover your usage requirements — neither undersized and running dry, nor oversized and wasting budget.
Yes. Most residential systems are designed with an automatic switchover that draws from rainwater tanks first and switches to municipal supply when tanks run low. This maximises your use of harvested water while ensuring continuity of supply at all times.
Yes. We install rainwater harvesting systems in Plettenberg Bay, Knysna, George, Wilderness, Sedgefield, and on farms and rural properties throughout the Garden Route and surrounding areas.
Yes — and it is something we actively encourage. A solar-powered pump removes the running cost of your water system entirely, and both systems are designed and installed by the same team. Many of our clients combine solar and rainwater harvesting for complete energy and water independence in a single project.