Deep infiltration at Kwartellaan, Maasluis

The municipality of Maassluis decided to retrofit the Kwartellaan. The renovation project does not only consist of replacing the asphalt, but also improving road safety and accessibility, and increasing the water storage capacity of the Kwartelsingel. In addition, 'greening' of the Kwartellaan is another important aspect of the project.

The municipality wants to gain experience with deep infiltration of rainwater as a climate adaptation solution and has designated the renovation of the Kwartelsingel as a pilot location.

In 2020, the engineering company Gebiedsmanagers conducted a feasibility study into the possibilities for deep infiltration. Two sampling rounds were carried out to map the surface water quality. With these results, FieldFactors was asked to design and implement a BlueBloqs system for the treatment of the collected rainwater to be discharged into the deep underground via infiltration wells. A gravity-based BlueBiofilter of 40 m2 footprint was implemented alongsite the Kwartelsingel. A BlueHub was implemented to operate the system and monitor the quality of the water.

Rainwater runoff from an area of approximately 8 hectares of surrounding urban area is collected through the stormwater sewer and retained into the Kwartelsingel, a closed surface water body. Collected rainwater us temporarily retained in the Kwartelsingel. When the water level in Kwartelsingel reaches +10 cm, the water flows by gravity towards the BlueBiofilter, where it is purified prior discharge into the underground via vertical infiltration wells.