Microplastics in construction projects – what we know now and good practice guidance  (P3283)

There is increasing media, public and regulators' attention on microplastics due to the ecotoxicological risks they pose. Microplastics are also known to cause harm to humans via the food chain.   

Microplastics come from plastics and the construction industry is the second largest user of plastic.  Fabric or textile used in construction sites, fiber reinforcement in concrete, paint, plastic beads, insulation sheets, etc. are major secondary sources of microplastics. Microplastics are considered by regulators as ‘emerging contaminants’ which reflects the growing their growing concern. 

There are few guidance on risk assessment and management of microplastics. In 2022, UKWIR published Investigation of the fate and behaviour of microplastics in wastewater treatment works.  There are also research efforts from academic institutions such as Portsmouth University and Manchester University but more work is needed to improve our understanding of the impacts of microplastics and how to manage their risk. 

However, the construction industry cannot afford to do nothing. There is sufficient evidence that microplastics are harmful.  We should develop good practices on how to reduce and manage microplastics risk during construction projects based on what we know in parallel with continued research.    

Project objectives

Stage 1 Understanding the issue

• What are the different types of microplastics found in soil and water 
• What are the sources of the microplastics
• How microplastics are regulated in soil, drinking water and groundwater
• What are the impacts and risks on ecology and human health
• What at the available guidance and are they applicable to UK projects
• What are the areas where more research is needed
  

Stage 2 Development of good practice. The focus will be on:

• What can be done from the design stage to site activities to reduce generation of microplastics
• How to control the spread of microplastics in construction projects 
• Using case studies to demonstrate good practice 
  

Project status

Ramboll have been appointed research contractors for this project. We are currently seeking and technical and financial support.

Further information
For further information or to get involved with this project please contact Joanne Kwan