Sectional Steel Water Tanks
Precision-Engineered Steel Water Tanks for Africa’s Toughest Landscapes
For a limited time, get 10% OFF confirmed tank orders placed between 1st June and 31st July 2026. T's and C's Apply
Discount applies to tank price only and excludes installation and fittings.
Who we are
Water Tanks From Rainbow Tanks
Rainbow Reservoirs Pty Ltd is a manufacturer and supplier of the highest quality Aluzinc® steel, sectional water storage tanks for liquid or steel water tank storage solutions throughout Africa. We install your water tank on-site as a no-maintenance, durable system that is rugged, dependable, and visually attractive, while remaining capable of withstanding the harshest environments.




Why Use our Water Storage Tanks
As tank suppliers, we ensure that our durable reservoirs suit your specific requirements perfectly and that your stored, potable drinking water is clean, untainted and odourless.
Our pressed steel sectional panel water tank and specialised ASIB approved steel fire protection tanks are of the highest quality. We also provide approved dual fire-fighting/drinking water tanks.
And that’s why we’re considered a preferred brand in our category; because our water tanks and fire tanks consistently deliver both the diversity of application and range of capacities to suit your specific needs… and budget!
Contact us for premium quality water tanks and water storage solutions:
Telephone: +27 11 965 6016
Telephone: +27 82 550 7559
Email: sales@rainbowres.com




What we offer you!
Our extensive and extremely satisfied customer base throughout Africa will attest to the high quality and standards that underpin the ethos of our Company and our personalised service.
- 5,000 litres to over 4 million litres
- Walls and roof of anti-corrosive Aluzinc® coated steel
- Heavy duty, RPVC 1000gsm potable/food grade liners of the highest quality (more)
- Steel dome roof with optional gutter system for rainwater harvesting (more)
- Durable, no-maintenance components throughout (more)
- Various colour options to suite your preference (more)
- Quick, economical on-site assembly (more)
- Tanks under 350,000 litres require no concrete foundation! (more)
- Permanent or temporary installation – option to relocate
- Modular. Flat-packed for easy transport and export
- DIY option
- 40-year life expectancy, 12 year warranty!
Customers reviews
Tried-and-tested throughout Africa
Benefits
- Cost effective
- Quality certified components throughout
- High corrosion resistance
- Engineer certified
- Food grade tank liners certified fit for human consumption
- Competency certified installation teams
- Flat-packed, modular design facilitates transport and shipping / export
- Rapid, economical on-site assembly in remote areas
- Low maintenance
- Tough and durable.
Why install a bulk water storage tank?
The demand for water is rapidly increasing worldwide, yet the planetary water reserves remain finite! Already demand is often beginning to exceed supply!
A reliable and constant supply of water is crucial to sustain households and for the effective functioning of business and industry. Fact is, we are normally reliant on an external supplier/source for our vital water resources. By installing a water storage system, you can rely on your own emergency water storage reserve in times of water shortages, water cut-off or while water supply services are being repaired or maintained. No inconvenience, no business interruption!
Rainwater harvesting tanks
The wise and commendable practise of rainwater harvesting is now becoming a necessity for households and industry alike. Some benefits of storing rainwater in a tank:
- Rainwater is chemical-free
- Rainwater can replace all non-drinking water requirements
- Lessens the burden on water supply infrastructure
- Lessens the depletion of our catchment reservoirs and ground water
- Prevents soil erosion by reducing peak storm-water run-off
- Reduces water bills
- Provides an emergency water supply
- Cost-effective, easy to install, little to no maintenance.
Rainwater, the most precious of all resources, is FREE!
When it comes to water tanks South Africa, our customers appreciate the solid benefits inherent in any Rainbow Reservoirs water storage tank.
Contact us for expert advice on a water storage solution to fit your requirements and budget.
Rainbow Reservoirs
Sectional Steel Water Tanks
Rainbow Reservoirs is a manufacturer and supplier of Aluzinc® sectional steel, bolted-panel tanks throughout Africa and beyond. Our water and liquid storage tanks are used widely across the continent by satisfied customers in the industrial, agriculture, mining, commercial, food-processing, domestic, rural and fire-fighting sectors, to name a few…
STANDARDS AND CERTIFICATIONS
Rainbow Reservoirs is export registered: SADC Certificates of Origin, EU, EFTA, AGOA…
Used widely across the continent
Our water and liquid storage tanks are used widely across the continent by satisfied customers in the industrial, agriculture, mining, commercial, food-processing, domestic, rural and fire-fighting sectors, to name a few…
Premium quality water storage tanks in Africa
As water storage tank suppliers and manufacturers, every component of our water tanks is meticulously sourced and inspected to ensure top quality before installation.
engineer certified designs
Our water tank designs continue to bolster our reputation as a respected brand in the International Water Storage Solutions industry.
Get in touch
Contact our sales
Contact us for expert advice on a water storage solution to fit your requirements and budget.
sales@rainbowres.com
011 965 6016
Invest in your Water Security Today!
Contact us for expert advice on a water storage solution to fit your requirements and budget.




Industrial Water Storage & Fire Compliance Updates

Beat the Heat & The Water Grid: Why Commercial Operations Need Emergency Bulk Storage Before El Niño Hits
As South Africa braces for the predicted 2026/2027 El Niño cycle, commercial enterprises are facing a double threat: extreme highveld heatwaves paired with severe municipal infrastructure strain. For property managers,

El Niño South Africa 2026: Heatwave Warnings Escalate as Pacific Warming Strengthens
Climate monitoring bodies and regional weather experts have issued urgent warnings for Southern Africa: El Niño in South Africa is rapidly gaining strength, signaling an increased likelihood of severe heatwaves,

The 2026/2027 El Niño Threat: How South African Agribusinesses Can Secure Irrigation Reserves Now
Climate forecasters and global meteorological bodies have signaled a high probability of a strong El Niño weather pattern extending through late 2026 and into 2027. For Southern African agriculture, this