Abstract:
As  the  river  Ganga  is  a  sacred  river  &  also  the  lifeline  for  people  living  nearby,  increased settlement  in  and  around  Haridwar  has  increased  concerns  about  the  quality  of  river  Ganga.  This study  is  an  overview  of  the  current  water  quality  of  river  Ganga  at  Haridwar.  Water  samples were  collected  at  an  interval  of  15  days  from  5  study  sites  and  analyzed  for  pH,  Electrical Conductivity (EC),  Turbidity (NTU),  Total  Alkalinity (TA),  Total  Hardness (TH),  Total Dissolved  Solids  (TDS),  Total  Suspended  Solids  (TSS),  Sodium  (Na+),  Potassium  (10,  Calcium (CaH),  Magnesium  (MgH),  Sulphate  (5042),  Nitrate  (NO3),  Chloride  (Cr),  Phosphate  (P043-), Silica  (Si),  Dissolved  Oxygen  (DO),  Biological  Oxygen  Demand  (BOD),  Total  Coliform  (TC) and  Faecal  Coliform  (FC).  In  order  to  get  a  view   on  the  current  river  water  quality,  an  attempt  of has  been  made  to  develop  WQI  for  Drinking  &  Irrigation  purposes. Chemical  analyses  of  water samples  showed  that  calcium  and  bicarbonate  are  the  dominant  cation  and  anion,  respectively. The  water  type  is  Ca-Mg-HCO3  based  on  hydro-chemical  facies  using  Piper's  diagram.  The results  were  compared  with  the  drinking  water  standard (BIS 10500: 2012)  and  it  clearly indicates  that  water  quality  for  drinking  purpose  is  of  poor  quality  while  it  is  of  Excellent  quality for  Irrigation  Purposes.