ISSN (0970-2083)

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Research Article Open Access

ASSESSMENT OF WATER QUALITY AND POLLUTION OF PORUR DOUBLE LAKE (ERETTAI ERI), CHENNAI

Abstract

Water samples were collected from Porur double lake which is also called as “Erettai Eri”, one of the primary water resource for people residing in Chennai. Water samples were collected from five different sampling sites including lake, which is the source, treatment (T) and distribution sites (DS). Analyses of physico-chemical parameters like turbidity (NTU), total dissolved solids (mg/L), total suspended solids (mg/L), electrical conductivity (μm/cm), pH, total alkalinity (as CaCO3) (mg/L), total hardness (as CaCO3) (mg/L), calcium (as Ca) (mg/L), magnesium (as Mg) (mg/L), iron (as Fe) (mg/L), nitrite (as NO2) (mg/L), nitrate (as NO3) (mg/L), chloride (as Cl) (mg/L), flouride (as F) mg/L), residual chlorine mg/L, sulphate (as SO4) mg/L, phosphate (as PO4) (mg/L, dissolved oxygen (DO) (mg/L), biochemical oxygen demand (BOD) (mg/L) and chemical oxygen demand (COD) (mg/L) showed that turbidity, alkalinity, iron, nitrite, phosphate, dissolved oxygen (DO) and residual chlorine in the samples were not observed to be in confirmation with the prescribed limits of BIS (1991) and WHO (1993).

R.Kowsalya , A.Uma , S.Meena , K. Saravanabava , C. M karrunakaran and M. Decca raman

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