Above-ground Storage Tanks

Above-ground Storage Tanks (38)

Above-ground plastic storage tanks

Catching rainwater is the first step in sustainable water management. For renovation projects in urban areas, doing this above-ground is often the only option.

Above-ground storage tanks 

• For rainwater storage: Our tanks are suitable for above-ground storage in buildings where access is limited. Larger volumes can be achieved too by connecting several tanks, while the fact they are light-weight means they are easy to install as well.

• For industrial applications: Industrial storage basins are mainly designed to be used by companies, as this way, washing installations, horticultural and industrial companies can keep and store large amounts of water in a rational way.

• For applications in private households: Rainwater can be used for all kinds of purposes, such as filling ponds, cleaning terraces, watering plants, and much more.

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Rainwater Filters

Rainwater Filters (20)

Catching twigs, leaves, stones, sand and other debris before the rainwater flows into the tank

Catches twigs, leaves, stones, sand and other debris before the rainwater flows into the tank.

Rainwater coming through these filters is perfect for storage in a tank to be used later to run the washing machine, flush the toilet, water the garden and much more.


The vortex fine filter is usually installed below ground in the horizontal rainwater pipe. It filters the rainwater that flows in at the side of the filter unit and releases the filtered rainwater to the storage tank. Its filter insert is made of a fine stainless-steel mesh with a mesh size of only 0.28 mm. Leaves, moss and other debris entrained in the rainwater are reliably filtered out and flushed away to the soakaway or drain.

Inline filters

Inline filters are integrated in the manhole or shaft of the rainwater tank and fitted between the inlet and outflow. The filtered rainwater will flow vertically into the tank, while any debris will stay behind in the filter to be flushed away. Inline filters are designed for applications that offer limited space and only a small difference in height between inlet and outflow.

Downpipe filters

These filters are integrated in the rainwater downpipe and are best suited for applications involving sloping tile or slate roofs.

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Rainwater Harvesting Systems

Rainwater Harvesting Systems (48)

Rainwater installation - Rainwater harvesting and rainwater use


Rainwater harvesting for use in the house and the garden

Rainwater is perfect for doing the washing, flushing the toilet and watering the garden. If we want to use this valuable resource, a proper rainwater installation is a must, however. Did you also know rainwater tanks are now mandatory for new-builds and thorough renovations? So why not use all that free water as much as we can?

Automatic switch to tap water with a Sigma, Optima or Multimat operating system.

These systems for rainwater harvesting manage the entire rainwater supply flow, check the level of the rainwater tank and switch automatically to tap water when needed. Consistent with the DIN 1989 and DIN EN 1717 norm.

Our refillsystems are approved by the Belgian Federation for the Water sector (BELAQUA), we possess a BELAQUA certificate.


LOW ENERGIE USAGE! The systems are standard outfitted with a pump regulator (ZETA 02 pump controller) that uses only 0.2 Watts in stand-by mode, which is considerably lower than other commercially available operating systems. This pump regulator controls the pump when needed


Suction filters

Floating fine suction filters (SAFF): to drain rainwater from tanks and other vessels, ponds and wells. This filter has a mesh size of 0.3mm

Floating coarse suction filters ( SAGF): to drain clean pre-filtered rainwater from cisterns and other vessels. This filter has a mesh size of 1.2mm

Suction filters without non – return valve: these models for submersible pumps / pressure pumps have no non-return valve (like with our Optima system)

Suction filters with non-return valve: these models are for suction pumps fitted with a non-return valve (like with our Sigma system)

All suction filters are standard fitted with a floater of 15cm diameter.

Suction filter sets

These sets comprise of a standard fine suction filter with floater (15cm) and a suction hose with connector.

Total Solution

Complete rainwater harvesting systems: installation for the reuse of rainwater through use of a connected pumping installation for the connection of one ore more toilets or washing machines.

Slim Rain harvesting systems: instant solution for the use of rainwater in the garden and around the house.

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Rainwater Infiltration

Rainwater Infiltration (14)

Infiltration system that lets water seep into the soil

Infiltration systems that let water seep into the soil.

Letting rainwater infiltrate means we leave it to seep into the soil again, one way or the other. By doing so, we do, in fact, no more than restoring a disrupted natural pattern, because usually, when rain falls, it seeps back into the soil, replenishing groundwater reserves. But densely built-up areas leave rainwater less and less the chance to do this. Which means that letting rainwater infiltrate can be a valuable contribution to restoring our groundwater reserves and combatting drying out.

A good infiltration system can be made up of underground plastic crates that catch the rainwater temporarily and slowly let it seep into the ground again.

Our individual infiltration systems can be connected to:

  • Your rainwater tank overflow
  • Rainwater from paved surfaces (terraces), collected in drainage channels, floor drains, etc.
  • Potentially purified wastewater (overflow of individual water purification)

DS Packaged infiltration crates

DS Infiltration crates come in ready-to-use packages of 200 l -  1,200 l. Provided with an in- and out connection of ø160 and an inspection channel. The BENOR certified geo textile they are wrapped in is quality woven SG29/29 (Bonar)-type plastic mesh which eliminates the risk of clogging. Very flexible!

Several standard sizes can be combined for projects larger than 1,200 l.

DS sand trap Is installed before the infiltration crates. Body in HDPE with removable PVC bucket.

PVC filter trap Is installed before the infiltration system and catches small debris. Suitable for catching leaves and filtering debris.

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Stormwater Management

Stormwater Management (8)

Large volumes of 20.000 L to 300.000 L

DS STORM DRAINS: Temporary storage of water in heavy rain for controlled release.

DS INFILTRATION BASINS: Simultaneous infiltration of rainwater.DS Polystorm crates were specifically designed for use in large applications.

DS STORAGE BASINS: Rainwater storage for re-use

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