Water Quality Assessment of Agno River Tributaries in Eastern Pangasinan for Irrigation Purposes

Abstract

This study was conducted to assess Agno River tributaries for irrigation purposes. Water
discharge, coordinates and water samples for laboratory test, were gathered simultaneously. Results and
findings revealed that water quality indicators and the water discharge at the study sites are all safe to use
for irrigation. The pH of the water samples tested is within the normal range from 6.0 to 9.0. Amounts of
sodium are within the optimum range of 0-50 ppm. Detected amounts of sulfate are too low to exceed the
optimum amount of 400 ppm. Chloride contents of the water samples were below the normal range of 350
ppm. Boron contents are below the normal range of 0.75 mg/l. It was then observed that there was dumping
of garbage along the banks of Agno River which may cause water quality deterioration in the future. It is
recommended that the Clean Water Act and Solid Waste Management must be strictly implemented along the
river. Water quality analysis in Agno River and proper monitoring is necessary to determine the changes or
any detrimental ills that may affect the irrigation water and to develop solutions for water resource problems
that may affect plant growth.