River pollution: India
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| − | =Sewage flowing into Indian rivers= | + | =The extent of the problem= |
| + | ==Sewage flowing into Indian rivers== | ||
[http://epaperbeta.timesofindia.com//Article.aspx?eid=31808&articlexml=37000-million-litres-of-sewage-flows-into-rivers-23032015011020 ''The Times of India''] | [http://epaperbeta.timesofindia.com//Article.aspx?eid=31808&articlexml=37000-million-litres-of-sewage-flows-into-rivers-23032015011020 ''The Times of India''] | ||
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At a time when the government is focusing more on Ganga and Yamuna, the issue of polluted river stretches on other rivers appear to have been pushed to the backburner. PM Narendra Modi is expected to focus on this `gap' when he chairs a meeting of the National Ganga River Basin Authority (NGRBA) on March 26. | At a time when the government is focusing more on Ganga and Yamuna, the issue of polluted river stretches on other rivers appear to have been pushed to the backburner. PM Narendra Modi is expected to focus on this `gap' when he chairs a meeting of the National Ganga River Basin Authority (NGRBA) on March 26. | ||
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| + | ==2018-2025== | ||
| + | [https://epaper.indiatimes.com/article-share?article=23_09_2025_019_020_cap_TOI Sep 23, 2025: ''The Times of India''] | ||
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| + | New Delhi : Number of polluted river stretches in country has shown a consistent decline from 351 in 2018 to 311 in 2022 and further to 296 in 2025, shows an assessment report of Central Pollution Control Board (CPCB). | ||
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Two or more polluted locations identified on a river in a continuous sequence are defined as Polluted River Stretch (PRS). Stretches where biochemical oxygen demand (BOD) exceeds 3mg/l are identified as polluted stretches. BOD beyond prescribed levels affects health of aquatic life. A stretch where BOD concentration exceeds 30mg/l is categorised as most polluted stretch. | ||
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The 2025 assessment, based on river water quality data of 2022 and 2023 at 2,116 locations on rivers across country, shows 37 of 296 PRS were classified as most polluted. This number, however, has dropped from 46 in 2022. These 37 stretches were identified across 14 states, with five each in TN, UP and Uttarakhand; four in Gujarat; and three in Karnataka. | ||
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| + | Yamuna’s stretch from Palla to Asgarpur in Delhi, Sabarmati in Ahmedabad, Chambal’s stretch from Nagda to Gandhisagar dam in MP, & stretches of Tungabadhra and Sarabanga in Karnataka and TN, respectively, were among most notable PRS during the assessment period. Jhelum in J&K; Ganga, Ramrekha and Sikrahna in Bihar; Hasdeo and Mahanadi in Chhattisgarh; Sal and Mapusa in Goa; Cauvery and Tungabhadra in Karnataka; Periyar in Kerala; and Amba & Savitri in Maharashtra are among prominent rivers where PRS were seen to have deteriorated in water quality. | ||
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The report, at the same time, observed improvement in water quality in 220 stretches that were identified as PRS in 2018. “Of the 220 PRS, 149 river stretches are not identified as polluted stretches due to compliance with BOD criterion,” said the report. | ||
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| + | [[Category:India|R | ||
| + | RIVER POLLUTION: INDIA]] | ||
Latest revision as of 13:54, 25 September 2025
This is a collection of articles archived for the excellence of their content. |
[edit] The extent of the problem
[edit] Sewage flowing into Indian rivers
Mar 23 2015
37,000 million litres of sewage flows into rivers daily: Report
Vishwa Mohan
The Central Pollution Control Board (CPCB) in its recent report noted that nearly 37,000 million liters per day (MLD) of `untreated' sewage water flows into rivers across the country.
The report, submitted to the environment ministry last month, said though the sewage treatment capacity in the country was augmented over the years, the wide gap between sewage generation (57,000 MLD) and treatment capacity (20,358 MLD) kept polluting water resources be it river water or groundwater.
As many as 302 river stretches on 275 rivers across the country have got polluted due to discharge of both municipal and industrial waste water over the years.
At a time when the government is focusing more on Ganga and Yamuna, the issue of polluted river stretches on other rivers appear to have been pushed to the backburner. PM Narendra Modi is expected to focus on this `gap' when he chairs a meeting of the National Ganga River Basin Authority (NGRBA) on March 26.
[edit] 2018-2025
Sep 23, 2025: The Times of India
New Delhi : Number of polluted river stretches in country has shown a consistent decline from 351 in 2018 to 311 in 2022 and further to 296 in 2025, shows an assessment report of Central Pollution Control Board (CPCB).
Two or more polluted locations identified on a river in a continuous sequence are defined as Polluted River Stretch (PRS). Stretches where biochemical oxygen demand (BOD) exceeds 3mg/l are identified as polluted stretches. BOD beyond prescribed levels affects health of aquatic life. A stretch where BOD concentration exceeds 30mg/l is categorised as most polluted stretch.
The 2025 assessment, based on river water quality data of 2022 and 2023 at 2,116 locations on rivers across country, shows 37 of 296 PRS were classified as most polluted. This number, however, has dropped from 46 in 2022. These 37 stretches were identified across 14 states, with five each in TN, UP and Uttarakhand; four in Gujarat; and three in Karnataka.
Yamuna’s stretch from Palla to Asgarpur in Delhi, Sabarmati in Ahmedabad, Chambal’s stretch from Nagda to Gandhisagar dam in MP, & stretches of Tungabadhra and Sarabanga in Karnataka and TN, respectively, were among most notable PRS during the assessment period. Jhelum in J&K; Ganga, Ramrekha and Sikrahna in Bihar; Hasdeo and Mahanadi in Chhattisgarh; Sal and Mapusa in Goa; Cauvery and Tungabhadra in Karnataka; Periyar in Kerala; and Amba & Savitri in Maharashtra are among prominent rivers where PRS were seen to have deteriorated in water quality.
The report, at the same time, observed improvement in water quality in 220 stretches that were identified as PRS in 2018. “Of the 220 PRS, 149 river stretches are not identified as polluted stretches due to compliance with BOD criterion,” said the report.
