Daily Current Affairs Article 20th January 2021: Gujarat ranks fourth among the top five States with highly polluted rivers, with as many as 20 rivers in the critically polluted category.
According to data from the Ministry of Environment and Forest (MoEF), the Sabarmati is among the most polluted rivers in the country.
| Article and Schedule Quiz | Start Test! |
As per the official parameters, if the chemical oxygen demand (COD), which indicates organic pollutant load, is higher than 250 mg per litre, then it should not be released into the rivers.
Most of the Gujarat rivers where the effluents are dumped into, the COD level is in the range of 700 to 1000 mg per litre.
While Dissolved Oxygen (DO) level [indicating the health of a river] in perennial rivers like Mahisgar should be in the range of 6 to 8 mg per litre, it is actually below 2.9 mg per litre.
