Groundwater quality assessment flags elevated nitrate and iron contamination in Kerala

Of the 699 groundwater samples collected from the State, 32 showed nitrate concentrations above the permissible limit of 45 mg/litre. Forty-nine samples showed iron concentrations above the permissible limit

The Hindu

Published: 2 July 2026

This article was originally published by an external source. Read the full story at the source.