Indian Pollution Flashcards
(27 cards)
What was Delhi’s annual average PM2.5 concentration in 2024?
104.7 µg/m³
How does Delhi’s 2024 PM2.5 level compare to India’s national standard?
More than twice the national standard of 40 µg/m³
What was Delhi’s worst Air Quality Index (AQI) reading up to 2024?
491 classified as ‘severe plus’ on November 18
What percentage increase did Delhi’s PM2.5 levels see in 2024 compared to 2023?
3.4% increase
How many monitoring stations reported data for Delhi’s air quality in 2024?
37 stations
What is the primary source of pollution in the Yamuna River?
Untreated sewage and industrial effluents
How much industrial effluent is discharged into the Yamuna daily?
Approximately 153 million liters per day
What was the faecal coliform count in the Yamuna as it leaves Delhi in April 2025?
1.5 million MPN per 100ml
What percentage of the Yamuna’s pollution is contributed by Delhi?
76%
How many sewage treatment plants in Delhi failed to meet standards in April 2025?
16 out of 37 plants
What was the dissolved oxygen level at Palla in April 2025?
5.4 mg/l
What is the safe limit for faecal coliform in water?
500 MPN per 100ml
How many people rely on the Ganges River for water?
Approximately 500 million people
What is the daily amount of sewage produced by towns and cities along the Ganges?
3 billion liters
How many endocrine-disrupting chemicals were found in the Ganges affecting dolphins?
39 chemicals
What is the primary threat to the Gangetic dolphin population?
Toxic chemicals affecting dolphin hormones
How much industrial effluent is discharged into the Ganges daily?
Approximately 249 million liters per day
What percentage of India’s municipal solid waste contributes to global river pollution?
10%
How much funding was allocated to the Namami Gange programme?
Over 4 billion USD has been allocated since 2014
How many sewage treatment plants were built or upgraded under Namami Gange by 2024?
Over 160 sewage treatment plants
What percentage of untreated sewage is now being targeted under new Yamuna Action Plans?
Over 80% of sewage is being targeted for treatment
How many electric buses did Delhi deploy by 2024 to reduce air pollution?
Over 2000 electric buses were deployed
What percentage of industrial units in Delhi now use piped natural gas instead of coal or diesel?
Over 90% of industries have switched to piped natural gas
What was the reduction in PM2.5 levels in Delhi during car rationing schemes like Odd Even in 2019?
Up to 13% reduction in PM2.5 during enforcement
