Dutch Government Temporarily Bans Steel Slag in Public Spaces for Safety
The Hague, Monday, 21 July 2025.
The Dutch government has imposed a one-year ban on steel slag in public areas to prevent potential health risks, pending further research on its environmental impact.
Understanding the Steel Slag Ban
The Dutch government, led by junior environment minister Thierry Aartsen, announced a temporary ban on the use of steel slag in public spaces such as cycle paths, footpaths, and playgrounds. This decision follows warnings about the potential health risks posed by steel slag dust when inhaled or when it comes into contact with rain or groundwater [1]. The ban, effective as of July 21, 2025, is in place for one year and aims to allow time for additional research and consideration of safer alternatives [1].
Potential Health and Environmental Risks
Steel slag, mainly produced by Tata Steel in the Netherlands, is a byproduct of steel manufacturing and has been widely used as a cheap building material [1]. However, reports from the public health institute RIVM and warnings from the environment inspectorate have highlighted that the material can release harmful substances under certain conditions [1]. A 2023 RIVM report identified potential environmental damage and public health risks when steel slag is used according to current regulations [1].
Exemptions and Ongoing Research
The ban does not extend to large bodies of water, where studies have shown that steel slag does not pose health or environmental hazards [1]. Furthermore, certain uses of steel slag, such as in concrete blocks or as an additive in asphalt, are exempt from the ban provided they constitute less than 20% of the mixture [1]. During the ban period, the ministry will require permits for using steel slag on land while ensuring it is used safely [1]. This pause will facilitate further investigation into safer construction materials and potential regulations adjustments [1].
Impact on Tata Steel and Future Prospects
Tata Steel, a major source of steel slag in the Netherlands, produces approximately 650,000 tonnes of this material annually, equivalent to about 26,000 truckloads [1]. The temporary halt on its use in public areas might impact the company’s operations as they may need to explore alternative waste management or recycling strategies. The Dutch government’s proactive stance reflects a broader trend towards stricter environmental policies, which may push companies to innovate greener and safer industrial byproducts [1].