Himalayan Lake Tilicho Found Polluted with Shocking Microplastic Levels

A new study has revealed high levels of microplastic pollution in Tilicho Lake, a remote high-altitude lake in the Himalayas. The findings, published in iScience, highlight the growing problem of plastic contamination even in isolated environments. Environmental researcher Sahil Shrestha collected water samples from Tilicho Lake and discovered an average of 42 microplastic particles per litre. The contamination was worse in areas most visited by tourists. The particles were mainly polyester, polyethylene, and polypropylene.

This is not the first time microplastics have been found in remote locations. In 2019, Imogen Napper and her team detected them in snow and stream water near Everest Base Camp. Water scientist Tista Prasai Joshi has also warned that rising plastic use in the Global South is damaging the environment.

Shrestha has proposed stricter conservation measures to tackle the issue. He recommends banning trekkers from bringing plastic bottles and bags to the region. The pollution in Tilicho Lake could affect both human health and ecosystems downstream. The study adds to growing evidence that microplastics are spreading to even the most distant parts of the planet. Experts continue to call for stronger action to reduce plastic waste.