Archive · 3 Aug 2026
Delhi Yamuna Fish Contain More Microplastics Than Haryana
Scientists from the University of Delhi looked at 220 fish from the Yamuna River.
They found tiny plastic pieces in every fish, especially in the part of the river that goes through Delhi.
The fish in Delhi had about 7.6 plastic pieces on average, while those upstream in Haryana had fewer.
Most of the plastic was in the fish’s stomach, but some also got into the gills and muscle.
The plastic was mostly tiny fibers from clothes and washing machines.
The study says the Delhi stretch of the river is a big pollution problem and that we need better waste treatment and less plastic in the water.
220 freshwater fish from Delhi and Haryana were examined, all containing microplastics.
The Delhi stretch of the Yamuna had significantly higher microplastic loads than upstream Haryana sites.
Average of 7.6 microplastic particles per fish; tilapia had the highest average of 21.8 particles.
Microplastics were mainly found in the gastrointestinal tract, with some in gills and muscle tissue.
Fibers made up 77.8% of the particles, indicating sources like synthetic clothing and wastewater.
- Who
- Researchers from the University of Delhi
- What
- Study of microplastic contamination in freshwater fish from the Yamuna River
- Where
- Yamuna River, Delhi (Sonia Vihar, Sur Ghat) and Haryana (Yamuna Nagar, Karnal)
- Why
- To assess microplastic levels and highlight the need for monitoring, wastewater treatment, and waste reduction
- Study sample size
- 220 fish
- Average microplastics per fish
- 7.6
- Highest contamination species
- Tilapia (21.8 particles per fish)
- Contamination zone
- Delhi stretch of the Yamuna
- Polymer Hazard Index
- Category IV