With water costs rising and supply increasingly unreliable, capturing rainfall for later use has become a practical necessity for many Kenyan households and businesses. Bestcare Gardeners designs and installs rainwater harvesting systems for homes, estates, schools, and commercial properties across Nairobi and Kenya, turning roof runoff into a dependable water source for gardens and beyond.
What Our Rainwater Harvesting Service Includes
Our rainwater harvesting installations are built for Kenya's seasonal rainfall patterns:
- Site and Roof Assessment – Calculating catchment area and expected harvest volume based on roof size and local rainfall data.
- Gutter and Downpipe Optimization – Ensuring roof drainage is correctly routed to storage points with minimal loss.
- First-Flush Diverters – Installing systems that discard initial dirty runoff to keep stored water cleaner.
- Storage Tank Installation – Sizing and fitting above-ground or underground tanks to match household or irrigation demand.
- Filtration Systems – Adding mesh, sediment, and carbon filters depending on intended water use.
- Pump and Distribution Setup – Connecting harvested water to irrigation lines, taps, or storage reserves.
- Overflow and Backup Management – Designing safe overflow routes and integration with mains or borehole backup.
Why Rainwater Harvesting Makes Sense
A properly designed rainwater harvesting system reduces dependence on costly mains water and boreholes, provides a free source of irrigation water, and helps manage stormwater runoff responsibly. For properties with large roof areas, the volumes collected during Kenya's rainy seasons can meaningfully offset garden and even domestic water use for months.
Service Areas
Bestcare Gardeners installs rainwater harvesting systems across Nairobi and in Kiambu, Nakuru, Machakos, Nyeri, Mombasa, and Kisumu.
Estimated Costs
| Service | Estimated Cost (KES) | Notes |
|---|---|---|
| Site & roof assessment | 2,000 – 6,000 | Often included in full installs |
| Gutter/downpipe optimization | 10,000 – 30,000 | Depends on roof size |
| First-flush diverter installation | 5,000 – 12,000 | Per downpipe |
| Storage tank (5,000L–10,000L) | 60,000 – 150,000 | Tank, stand, fittings |
| Filtration system | 8,000 – 25,000 | Depends on filter type |
| Pump & distribution setup | 20,000 – 60,000 | For irrigation reuse |
| Full turnkey system (residential) | 100,000 – 300,000 | Complete installation |
Contact Bestcare Gardeners for a free assessment and rainwater harvesting quote for your property in Nairobi or Kenya.