Rainwater: One of the Most Valuable Resources of the Future
For decades, we have taken it for granted that clean drinking water will always be available simply by turning on the tap. Meanwhile, almost unnoticed, the world around us has changed. Longer periods of drought are increasingly followed by sudden, extreme rainfall events, while many people still say: "It hardly rains anymore."
The reality, however, is far more complex. Hungary's annual precipitation levels have not decreased dramatically over the long term. The real change is the increasingly unpredictable distribution of rainfall. There are periods when no rain falls for five or six weeks, followed by storms that bring as much as 100 millimetres of precipitation within just two days.
This irregularity creates serious challenges for water management, but it also offers opportunities for those who are able to think ahead.
Keeping rainwater where it falls
This principle was recognised decades ago by Hungarian-born professor József Országh, who has dedicated his life to a simple but forward-looking idea: rainwater should not be quickly drained away, but retained locally and used efficiently.
His work led to the development of the TELESŐ system, based on a simple concept: when rainfall is abundant, it should be collected and stored in appropriately sized tanks so that it remains available during drier periods.
We discussed this approach with Péter Kukucska, owner and managing director of WePlast Ltd.
Many people still believe that rainwater is too polluted for meaningful use. In reality, modern rainwater harvesting systems use several stages of filtration and purification.
First, leaves, branches and larger particles are removed from the water. Then, in a pre-settling chamber, sand particles and other solid materials sink to the bottom. After this stage, the water enters the storage tank, and before use it passes through additional fine filters that can remove even microscopic impurities.
If required, reverse osmosis technology can further purify the water, making it suitable even for drinking water quality applications.
Underground storage: nature's own preservation system
One of the most important elements of the system is the underground storage tank. This is not only an aesthetic choice.
The stable temperature of the soil - typically around 12–14°C - naturally helps preserve water quality over long periods. The water does not heat up, algae growth is reduced, and the tank does not become a breeding place for insects.
With the right mineral balance, the natural acidity of the water can also be controlled, ensuring that stored rainwater remains in excellent condition.
Every property requires a customised solution
No two properties are the same. A 100-square-metre house requires a different storage capacity than a 200-square-metre building.
The correct system size depends on several factors, including roof surface area, expected water consumption and local conditions. The goal, however, is always the same: to retain as much rainfall as possible where it falls.
Collected rainwater can be used for many purposes, including toilet flushing, laundry, cleaning, garden irrigation and — after appropriate treatment — even as drinking water.
This not only reduces the consumption of valuable drinking water but also decreases pressure on public water infrastructure. It is worth asking a simple question: is it really necessary to use high-quality drinking water to flush toilets or water gardens?
Water retention benefits the environment
Rainwater harvesting is not only beneficial for individual households. When rainfall is not immediately directed into drainage systems but instead allowed to gradually return to the soil, it supports groundwater replenishment and helps maintain the natural water balance of the environment.
The soil itself is one of nature's most effective filtration systems.
The effects of climate change are already visible today. The dramatic decline in water levels of lakes such as Lake Velence and Lake Balaton in Hungary are no longer distant warnings or theoretical predictions — they are part of our current reality.
That is why sustainable water management is not a challenge for tomorrow. It is a decision that must be made today.
A change in mindset, not only a technical solution
The TELESŐ system represents more than a technical innovation. It reflects a change in the way we think about water.
It reminds us that water is not an unlimited resource available at any time, but a natural treasure that must be valued and protected.
The more people understand this approach, the greater our ability will be to adapt to a changing climate.
The future will not depend solely on how much rain arrives.
It will depend on what we do with it when it does.
Partner Content
WePlast: Customised Solutions for Sustainable Water Management
For several years, WePlast Ltd. has specialised in the production of customised plastic tanks, primarily underground polypropylene storage systems.
Their solutions are chosen by private customers, businesses and industrial partners who value reliability, long service life and maintenance-free operation.
Whether the application involves wastewater storage, rainwater utilisation or specialised industrial needs, every tank is manufactured individually and tailored to the specific requirements of each project.
During production, WePlast considers customer expectations as well as the characteristics of the installation site, ensuring that every finished product provides an optimal solution for its intended purpose.
The company uses only high-quality polypropylene suitable for industrial applications. Their tanks are resistant to acids and alkalis and are corrosion-free, allowing reliable long-term operation even under demanding environmental and operational conditions.
From initial planning through manufacturing and delivery, WePlast supports its customers throughout the entire process to ensure that the final solution meets all expectations.
Instead of offering standard products from a catalogue, the company creates customised systems designed precisely for each customer's individual needs.
Sustainable water management begins with recognising the value of every drop.
(X)