Industrial waste dumping has polluted groundwater.
Chromium (VI) is a toxic metal causing the colour change.
Three districts in Uttar Pradesh are affected.
Health risks include serious illnesses from drinking the water.
Efforts are needed to supply clean water and remove contamination.
The waste contains chromium in a dangerous form, which has turned the underground water a yellow‑green colour.
Exposure to this contaminated water can lead to serious health issues for villagers.
Authorities are working to provide safe drinking water and clean up the pollution.
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