Reducing hazardous substances in construction to safeguard the aquatic environment, protect human health and achieve more sustainable buildings
NonHazCity 3

The NonHazCity story

20 January 2026
NonHazCity3 set out to address a widely overlooked but critically important issue: the presence of hazardous substances in construction materials and the implications this has for public health, circularity and long-term municipal resilience.
Technical details

Across the Baltic Sea Region, the project demonstrated that chemical safety in buildings is not an abstract regulatory concern but a practical challenge that affects cities, households and the environment every day.

The narrative of the project follows a clear logic. It begins with the recognition that many municipalities
face unexpected costs and risks when harmful substances are discovered in their buildings. These substances, both legacy and newly introduced, remain largely invisible during planning and maintenance, and the information available to cities is fragmented or difficult to interpret. This creates a structural knowledge gap that undermines the ability of local authorities to manage their assets safely and sustainably.

Together, the insights of NonHazCity3 offer a clear message: building a toxfree future requires
transparency, consistency and cooperation. With the tools, pilots and frameworks developed,
municipalities across the Baltic Sea Region are now better equipped to lead this transition and
protect both people and the environment for decades to come.

The full NonHazCity story can be found here.

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