Assessment of the surface water quality in high-altitude springs in the Sagarmatha (Everest) National Park, Nepal

A three-year study (2008–2010) of high-altitude springs in Sagarmatha National Park, Nepal, revealed deteriorating water quality along major tourist treks. While still meeting WHO and Nepalese drinking water standards, significant annual increases in nitrate-nitrogen and total phosphorus—key indicators of human impact—were detected. These trends suggest worsening degradation, despite current levels remaining below critical thresholds. The research provides a baseline dataset for managing these springs and assessing the effects of tourism on fragile highland ecosystems.

Ghimire, N. P., & Jha, P. K. (2024). Assessment of the surface water quality in high-altitude springs in the Sagarmatha (Everest) National Park, Nepal. Our Nature, 22(1), 1–9. https://doi.org/10.3126/on.v22i1.67345