Abstract:
The current research was conducted to investigate the water quality of stream
passing through the sector D-12 including sub-sectors, Golra village, Bhakhra-Ku village,
sector E-11 and F-11 of Islamabad for non-potable purposes. For the purpose, water
samples were taken from different locations along the length of the stream during the
month of October, 2014. The samples were analyzed for different parameters including
temperature, pH, flow rate, turbidity, electrical conductivity, color, total solids, total
dissolved solids, salinity, dissolved oxygen, chemical oxygen demand, SO4
2- and Cl
-
using standard methods. Some of the measurements were done in the field like flow rate,
temperature and color. The other parameters were analyzed in the laboratory using the
standard methods. The results were compared the standard values of NEQs (National
Environmental Quality Standards) and PSQCA (Pakistan Standards for Quality Control
Authority).
The results shows that almost all the physical and chemical parameters were
found to be in the permissible limits as prescribed by WHO and NEQS of Pakistan
except pH, turbidity and TDS at Site 6, 7, 8 and 9. These higher value of TDS, turbidity
and pH at site 6, 7, 8 and 9 suggesting the mixing of effluent and waste in a stream. The
results of physico-chemical parameters of stream water quality according to current
research suggested that there is no potential harm for using this water for non-potable
usessuch as, construction of new buildings and roads etc. However, detailed study should
be conducted to know the suitability of stream water for crop production.
