The researchers studied the water from Kpata River in Nigeria to check for heavy metals and other substances. They measured the temperature, pH, conductivity, nitrate levels, BOD, and TDS of the water. The results showed that the physico-chemical parameters were within safe limits according to the World Health Organization. However, the levels of iron, manganese, and nickel in the water were higher than the safe limits for drinking water. This means that the water may be harmful to both aquatic life and humans.