Informatics Publishing Limited

Bakul Malla Borah ¹, Hari Prasad Sarmah ², Ranu Roy ³

Affiliations
1 Department of Safety and Environment Protection, Bongaigaon Refinery, Bongaigaon-783 380, Assam, IN
2 Department of Environment, Gauhati University, Guwahati, Assam, IN
3 Department of Botany, Birjhora Mahavidyalaya, Bongaigaon-783 380, Assam, IN

Abstract

Water samples from 20 different sources from Dhaligaon area were studied to access their potability for drinking purpose. A total of 13 physico-chemical parameters have been investigated. In 50% of water samples pH was found below the permissible limit, while in 65% of water samples turbidity exceeded the permissible limit. The concentration of iron (Fe) was found within the permissible limit only in 20% of water samples. Other parameters like electrical conductivity, total suspended solids, calcium hardness, magnesium hardness, and total hardness were found within the permissible limit.

Keywords

Drinking Water Quality, Chirang District of Assam, Permissible Limits.

Full Text

   

Ranu Roy ¹, Munindra Nath Thakuria ²

Affiliations
1 Department of Botany, Birjhora Mahavidyalaya, Bongaigaon-783 380, Assam, IN
2 Department of Chemistry, Birjhora Mahavidyalaya, Bongaigaon-783 380, Assam, IN

Abstract

Water samples from 15 different schools of Bongaigaon area were studied to assess the suitability of drinking water. A total of 21 physico-chemical parameters including heavy metals as well as bacteriological water quality parameters have been investigated. The anions viz., sulphate, chloride and fluoride, and heavy metals viz., arsenic, lead and chromium were within the permissible limit, while mercury was present in 20%, and copper and iron in 33.3% of the total water samples studied. Sixty-seven percent of water samples were acidic, while in 40% of the samples turbidity was above the permissible limit. Water samples, particularly from ring wells, have been found bacteriologically contaminated.

Full Text