Rainwater Harvesting – Johannesburg & Pretoria
Turn Every Drop into Independence
Water is life – yet in South Africa, it’s increasingly unreliable. Between droughts, infrastructure failures and rising tariffs, many households are left vulnerable. With rainwater harvesting Alpha Plumbing transforms your roof into a reliable water source, giving you independence for gardens, toilets, laundry and more – while easing the pressure on municipal supply.
At Alpha Plumbing, we don’t just install rainwater tanks. We design complete, compliant systems that give you uninterrupted living, sustainability and long-term value.
Why Choose Rainwater Harvesting?
More than a trend, rainwater harvesting is becoming a necessity:
Reduce your bills:
stored rainwater offsets everyday municipal use
Stay prepared:
a built-in backup when supply disruptions hit
Protect your garden:
keep lawns, plants and trees thriving without restrictions
Live sustainably:
lower your environmental footprint and conserve a scarce resource
Add value:
properties with harvesting systems are seen as modern and resilient
What You Can Expect from Alpha Plumbing
Every home is different – and so is every rainwater harvesting system. Serving Johannesburg, Pretoria and surrounds since 1989, Alpha Plumbing combines local expertise with global best practices to deliver solutions that last:
Sustainability You Can See
By harvesting rainwater, you’re not just safeguarding your own interests – you’re helping future-proof Johannesburg and Pretoria’s water supply. Every drop you store reduces pressure on municipal dams and distribution systems. For families, schools and businesses, this is where uninterrupted living and responsible citizenship meet.
Sustainability is at the heart of Alpha Plumbing. That's why our rainwater harvesting systems are designed to minimise environmental impact and conserve resources.
Helpful Tips for Long-Term Success
Clean gutters every few months to prevent contamination
Install a first-flush diverter to capture the dirtiest rain at the start of a storm
Inspect and clean your tank annually
Replace filters every 6-12 months
Consider a tank level monitor so you’re never caught off-guard
FAQs – Rainwater Harvesting in South Africa
Yes. It’s legal for non-potable use (gardens, toilets, laundry). Some municipalities may require registration or by-law compliance.
Not advised unless treated through advanced filtration and disinfection.
Multiply roof area × average rainfall × 0.9. Example: a 100m² roof in a 600mm rainfall area yields ±54 000 litres per year.
Typical homes use 5 000-10 000L, depending on whether it’s for gardening only or household supply.
Your system can switch back to municipal water or send alerts when levels are low.
Independence in Every Drop – What Homeowners Say
Backed by 400+ five-star reviews, customers across Johannesburg and Pretoria highlight our reliability, service excellence and professionalism.
Our Rainwater Harvesting Solutions
