The beginning: a single thread
The story starts with a single thread of polyester, dislodged from the weave of a cheap, pink acrylic jumper as it spins around a washing machine. This load of washing will shed hundreds of thousands of tiny plastic fragments and threads – up to 700,000 in this one washing machine cycle.
Along with billions of other microscopic, synthetic fibres, our thread travels through household wastewater pipes. Often, it ends up as sewage sludge, being spread on a farmer’s field to help crops grow. Sludge is used as organic fertiliser across the US and Europe, inadvertently turning the soil into a huge global reservoir of microplastics. One wastewater treatment plant in Wales found 1% of the weight of sewage sludge was plastic.