Water quality assessment of groundwater in Barangay Marinig (Purok 4,5 and 6), Cabuyao, Laguna

Date

10-1998

Degree

Bachelor of Science in Agricultural Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Nieva T. Librojo-Basilio

Co-adviser

Carlito R. Barril

Committee Member

Angelo Josue M. Lubag

Abstract

Monitoring of quality of groundwater at ten sampling sites in Barangay Marinig (Purok 4, 5 and 6), Cabuyao Laguna was done from July to October, 1998. The parameters analyzed were pH, total dissolved solids (TDS), total hardness, chloride, nitrate, sulfate, major cations such as calcium, magnesium, sodium and potassium, heavy metal lead and most probable number (MPN) of coliforms. The values of pH and total dissolved solids ranged from 6.80 to 7.60 and 199 to 313 mg/L respectively. Total hardness and chloride concentration were 33.77 to 185.84 mg/L and 10.38 to 62.88 mg/L respectively. Nitrate (as NO3-N) fell within the range of 0.55 to 12.32 mg/L. Furthermore, sulfate concentration varied from 4.28 to 18.74 mg/L. Analysis of the major cations gave the following results: 10.77 to 53.00 mg/L for calcium; 7.05 to 36.48 mg/L for magnesium; 1.97 to 63.00 mg/L for potassium and 32.55 to 73.00 mg/L for sodium. No traces of lead were found in all of the samples analyzed. Analysis of variance showed that for pH and hardness, variation with respect to time of collection was significant at one percent level. For total dissolved solids, variation with time of collection was significant at five percent level. Chloride and nitrate concentrations showed significant difference at one percent level with respect to time of collection, age of well, depth of well and all their interactions. Sulfate concentration was significant at one percent level with time of collection and age of wells. The effect of depth of well on the averages of pH, total dissolved solids, hardness, chloride, nitrate and sulfate was significantly higher at a depth of 70 feet by Duncan's Multiple Range Test ( DMRT) at five percent level. . All the values obtained fell within the range set by the Department of Environment and Natural Resources (DENR) for Class A (Drinking Water) except for nitrate concentration reading which exceeded during the month of September. The other parameters conformed with the Maximum Allowable Limit (MAL) provided by the Philippine Water Quality Standards of Drinking Water except for potassium and most probable number of coliforms.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

"LG 993.5 1998 A13 /L37"

Document Type

Thesis

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