Stormwater Management

Stormwater is water from rain — or melting snow — that does not quickly soak into the ground. Stormwater flows from rooftops, over paved areas and bare soil, and through sloped lawns and fields. As it flows, this runoff collects and transports soil, pet waste, pesticides, fertilizer, oil and grease, leaves, litter, and other potential pollutants that ultimately wind up in local bodies of water. A single garden hose can supply enough water to wash left behind contaminants from the landscape and into our local water bodies, so you can only imagine what an entire rain event can do. In short, stormwater is important because it can lead to pollution, erosion, flooding and many other environmental and health issues if not properly understood and maintained.


download PDF Brochure above

Innolet-G is a cartridge and filter media system to treat stormwater runoff from traffi cked surface areas from typical pollutants such as heavy metals (zinc, cadmium,copper, lead), hydrocarbons, PAHs and phosphates.

Pilot project Vollhoefner Weiden in the Hamburg harbour area

Study on the road runoff filter INNOLET

D-Rainclean download PDF Brochure above

D-Rainclean consists of plastic elements 50 x 40 x 37 cm filled with a Filter-Media which is part of the system. This Filter-Media cleans therainwater by filtration, adsorption and inclusion, ion exchange, precipitation and biodegradation as required by the high legal demands of the soil and water protection. read more

The D-Raintank

The D-Raintank  The effective infiltration trench with multiple possibilities In addition to the use for catchment of water from roofed - or trafficked- areas, the D-Raintank may be used in new residential areas, industrial plants, sports grounds etc. as soakaway. Its capacity to store water and gradually release it can be used for the irrigation of parks and trees.

Installation Instructions D-Raintank

D-Raintank-Principle Draft

D-Raintank-Principle Draft II

Filter Chamber

Decentralised, efficient, low-maintenance The Funke Filter Chamber is manufactured monolithically from a Funke DN 1000 Profile Pipe. The chamber’s main components include a tangential inlet, a vertical spiral lamella structure, a flow separator, a filter unit and a circumferential fully slotted drainage pipe. The Funke Filter Chamber is suitable for a catchment area of up to 600 m2  read more

Flow Control Chamber

Controlled stormwater discharge The DN/OD 1000 Flow Control Chamber is a flexible, monolithic and sealed chamber system that is used whenever the flow of precipitation water needs to be controlled as it is discharged into the public sewer system. For example, this may be the case after it has been through a rainwater attenuation or soakaway system.  read more

HS-Silt Trap Chamber

Effective treatment of rainwater The HS®-Silt Trap Chamber DN/OD 800 with stainless steel sieve is equipped with an inlet and outlet in the nominal diameters of DN/OD 250. The stainless steel sieve is designed in such a way, that the rainwater from catchment areas of up to 2000 m² can be treated. The stainless steel sieve (1.4301) is especially effective in retaining particles like leaves, sand etc. - the fine particles will settle in the sedimentation area prior to the sieve. The stainless steel sieve must be cleaned and controlled on a regular basis. Adequately dimensioned emergency overflows assure the functionality of the system, even if there are blockages in the sieve.

Receptor Chamber DN/OD 400

Designed for pre-treatment The blue DN/OD 400 Receptor Chamber is used upstream of soakaway system, as a mechanical pre-treatment option. It can be connected to areas of up to approx. 800 m2. read more  

Receptor Chamber DN/OD 315

The perfect companion to the D-Raintank® systems The blue DN/OD 315 Receptor Chamber supplements the D-Raintank® range for rainwater infiltration. Including covers, it has an installation height of 1000 mm. Different load classes of covers are available read more 

Flow Control Chamber DN/OD 315

For controlling the discharge flow of rainter The DN/OD 315 Flow Control Chamber is used whenever the discharge flow of stormwater needs to be controlled as it is drained into the public sewer system, for example, after a rainwater treatment facility or an attenuation system.  read more 

D-Raintank 3000

The D-Raintank 3000 is a system for dealing with rainwater in an ecologically sustainable way. Once professionally installed, it stores precipitation water and gradually disperses it to the surrounding soil in a three-dimensional pattern.  read more

Grass Grids

Permeable Surface System  The honeycombed GOLPLA Grass Grids comply with all the ecological requirements for infiltration in durable greenspaces implemented by building contractors, municipal authorities, architects and planners. The grass grids – which are available in GOLPLA® design (64 x 33 x 3.8 cm) – are perfect for car parking spaces, fire and garage access routes, camping spots, footpaths, green roofs as well as banking and slope reinforcement. They can also be used to prevent topsoil from being washed away in flood risk areas.

Equiground Paddock Grids

Distribute load and control drainage  What horses want: EQUIGROUND® paddock grids have proven their worth as the perfect solution for sports surfaces. The easy-to-lay system is equally suited to ground reinforcement in horse-riding and dressage grounds, lunging pens, western riding arenas and simple horse exercise areas, from paddocks, trails and runs to enclosures, walking areas and other areas. The interlocking connection system makes the grids easy to lay and keeps them in position, while the impact-resistant PP material gives them a long service life. EQUIGROUND®paddock grids: keeps ground from getting muddy and keeps your animals healthy and happy.