Local and faster rainwater infiltration for the world of tomorrow

Prevent flooding and drying out of soil with the ecological infiltration blocks from Hydrorock.

Buffering and infiltration

Rijksmuseum Amsterdam opts for a local infiltration system


Drainage solution for residential farm at the Krimpen aan den IJssel

Separation and infiltration

Living on an estate in harmony with nature

Prevent drying out

Smart dripping irrigation solution on fig plantation in Dubai

This is Hydrorock

The solution for all your flooding, made from the 100% natural stone wool material. Molten rock that is spun into fibers and formed into a block, encased in a membrane of erosion-resistant filter cloth. Lifelong operation and immediately ready for use.

A very natural process

100% natural material

Volcanic rock basalt

Molten rock, spun into fibers and formed into blocks

Remains underground in optimum condition for decades

Resistant against erosion by plant- and tree roots

Inflow of soil not possible

Our projects

The best way to show the possibilities of Hydrorock, is to see the results.

Living on an estate in harmony with nature

Drainage solution for residential farm at the Krimpen aan den IJssel

Sustainably resolved flooding in the parking area in Amersfoort

The ‘Amsterdam City Archives’ relieves sewer system with Hydrorock infiltration buffers

Rainwater infiltration in public green area of Xiamen, Haicang District China

Dry feet for students on the campus of the Electric Power University in Beijing

Prevent flooding on the streets in Shanghai

The ‘Amsterdam City Archives’ relieves sewer system with Hydrorock infiltration buffers

Rijksmuseum Amsterdam opts for a local infiltration system

No pipework necessary
Ready for immediate use
Environmentally friendly
Lasts a lifetime
100% Dutch

Our mission

Hydrorock International wants to contribute sustainably to the preservation and use of clean rainwater in soil utilization. We focus on the prevention of flooding and dehydration in cultivated and non-cultivated areas with ecologically responsible (underground) solutions. Thus Hydrorock® contributes to the sustainable use of soil functions.

Frequently asked questions

This is a selection of questions we often get. Perhaps the answer to your question is included!

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+31 (0)10 30 20 000

's-Gravelandseweg 246

3125 BK Schiedam

The Netherlands

What is the water absorption capacity of the infiltration blocks in terms of time?

The speed with which Hydrorock blocks blocks of water depends on how the water can reach the blocks. If water comes in direct contact with the blocks, the speed at which the blocks absorb the water is approximately 400 liters per m2 per minute. If water reaches the blocks via a porous layer of, for example, sand, then sand has a delaying effect in this case and is then also normative. The absorption capacity / permeation speed of porous sand is approximately 50/60 liters per hour, which means that 50 liters of water on an area of 1 m2 takes 1 hour to sink into this. Absorption of water via the perforated tube in type BD blocks proceeds at a speed of 100 liters per linear meter of tube per minute.

Is the Hydrorock International range also available for consumers?

Hydrorock has a special product line for private individuals under the brand name Hydroblob®. There is an extensive dealer network for this range. There is usually a point of sale in your area. View our special Hydroblob website for more information.

How many Hydrorock infiltration blocks do I need?

The number of required Hydrorock® blocks depends on the surface, the groundwater level and the soil type. Use our calculator to calculate how many blocks you need. Our calculator for disconnecting rainwater can be found here. Look here for solutions to prevent flooding

How are Hydrorock blocks connected to rainwater discharge or street drain?

The connection to the rainwater drainage is done by connecting the rain pipe to the Hydrorock blocks of type BD. This version has a perforated tube (ø 100mm) that runs through the block so that the water can run into the block. The tube can be connected to rainwater drains, street vents, pipes, drainage hoses, gutters, etc. These blocks can be mutually coupled in the longitudinal direction by means of a small piece of perforated tube. The buffer capacity can be increased by placing a type D block without tube on the side (s) of type BD. The blocks pass the water on to each other.

Where are Hydrorock products available?

Hydrorock International has professional dealers in many countries. We are happy to link you to one of these points of sale. Hydrorock International also has official dealers outside Europe. In China, for example, Hydrorock is used to collect rainwater from highways. In Australia our official dealer sells Hydrorock primarily to prevent drying out. View all our current points of sale here.