The index shows that the water quality in natural water sources are what. 1. water with high value OD 2. water has a high COD. 3. lower BOD values water 4. water has a high temperature and low DO.
The index shows that water in natural water quality is at the 1. Water with high OD values of COD 2. Water with high water with the BOD 3. Low 4. Water temperature is high and the low DO.
The index shows that water natural water quality is any 1. Water with high value OD 2. Water with high value COD 3. Water value. Low BOD 4. Water high temperature and the low DO .