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Title: Assessment of water quality status in the inland lakes of Coimbatore, Tamil Nadu, India
Authors: Dineshkumar, S
Natarajan, N
Keywords: Coimbatore;Domestic dumping;Industrial effluents;Lakes;Water quality
Issue Date: Jul-2020
Publisher: NISCAIR-CSIR, India
Abstract: In this study, the physical, chemical and biological characteristics of the surface water of various inland lakes situated in Coimbatore have been analysed. The physico-chemical and biological parameters, such as pH, TDS, electrical conductivity, total hardness, chlorides, sulphates, sodium, potassium, BOD, COD, total alkalinity and E. coli concentration were analysed. The water quality of Selvampathy lake has drastically reduced as TDS, total hardness, BOD and COD values are beyond the permissible limit for this lake. This is due to discharge of industrial effluents and dumping of solid wastes. The chloride concentration of all the lakes has increased considerably. The low sulphate concentration in all these lakes indicates that there is no agricultural runoff and animal wastes being dumped into these lakes. The BOD concentration of Ukkadam lake has increased by an order of magnitude within the past three years. Ukkadam and Selvachintamani lake has faecal contamination as the E. coli concentration is beyond the permissible limit. The degradation of the quality of these lakes poses a major threat for the aquatic biota, public health and ground water quality.
Page(s): 1280-1285
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.49(07) [July 2020]

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