Bharalu River
{{short description|River in India}}
{{Use dmy dates|date=September 2020}}
{{Use Indian English|date=September 2020}}
{{Infobox river
| name = Bharalu River
| native_name = {{native name|as|ভৰলু নদী}}
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| pushpin_map = India Assam#India
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| subdivision_type1 = State
| subdivision_name1 = Assam
| subdivision_type2 = District
| subdivision_name2 = Kamrup Metropolitan district
| subdivision_type3 = Guwahati
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| source1 = Khasi Hills
| source1_location = Meghalaya
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| mouth = Brahmaputra River
| mouth_location = Bharalumukh, Guwahati, Assam
| mouth_coordinates = {{coord|26|10|29.9|N|91|43|47.1|E|display=inline}}
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| progression = Bharalu River - Brahmaputra River
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The Bharalu River is a tributary of the Brahmaputra River in the Indian state of Assam. The Bharalu River originates in the Khasi Hills of Meghalaya and flows through the heart of Guwahati before its confluence with the Brahmaputra River.{{Cite web|url= https://www.eastmojo.com/in-depth/2019/09/26/assam-and-dirty-flows-the-bharalu-through-the-heart-of-guwahati |website=Eastmojo|title= Assam: And dirty flows the Bharalu through the heart of Guwahati |language=en|url-status=live|access-date=26 September 2019|archive-url=https://web.archive.org/web/20200811011003/https://www.eastmojo.com/in-depth/2019/09/26/assam-and-dirty-flows-the-bharalu-through-the-heart-of-guwahati |archive-date=11 August 2020 }}
Bharalu river is one of the most polluted rivers in the state of Assam.{{Cite web|url= http://www.pcbassam.org/rlcc/BHARALU/Bhalaru%20City%20Sanitation%20Plan_Draft%20Final.pdf|website=Pollution Control Board, Assam|title= Conservation of River Bharalu, Guwahati -Preparation of Detailed Project Report|language=en|url-status=live|access-date=19 September 2020|archive-url=https://web.archive.org/web/20160910195154/http://pcbassam.org/rlcc/BHARALU/Bhalaru%20City%20Sanitation%20Plan_Draft%20Final.pdf |archive-date=10 September 2016 }}
Pollution of the Bharalu River
Bharalu River carries a large portion of the Guwahati city's municipal wastes. Bharalu serves as the natural drainage in Guwahati and the river carries sewage and wastage from markets, commercial establishments, hotels, restaurants, schools etc. and flows to meet Brahmaputra River at Bharalumukh.{{Cite web|url= https://www.pratidintime.com/pollution-brings-threat-to-bharalu-river/|website=Pratidin Time|title= Pollution Brings Threat To Bharalu River|language=en|access-date=19 September 2019}}{{Cite web|url= https://nmcg.nic.in/writereaddata/fileupload/ngtmpr/40_Assam%20MPR%20Feb%202020.pdf|website=National Mission for Clean Ganga|title= Submission of Monthly Progress Report by State of Assam for River Stretches under priority I & II|language=en|url-status=live|access-date=19 September 2020|archive-url=https://web.archive.org/web/20210720080126/https://nmcg.nic.in/writereaddata/fileupload/ngtmpr/40_Assam%20MPR%20Feb%202020.pdf |archive-date=20 July 2021 }}
The biochemical oxygen demand of the river is 52 mg/L in compared to the permissible limit set by the National River Conservation Directorate (NRCD) at 3 mg/L. Moreover, the obnoxious smell generated by the river is also a health hazard for the residents of Guwahati.{{Cite web|url= https://www.sentinelassam.com/top-headlines/polluted-flows-the-bharalu/|website=The Sentinel|title=Polluted flows the Bharalu|language=en|url-status=live|access-date=29 February 2016|archive-url=https://web.archive.org/web/20201205083150/https://www.sentinelassam.com/top-headlines/polluted-flows-the-bharalu/ |archive-date=5 December 2020 }}