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

Date

3-2004

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Nieva T Librojo-Basilio

Abstract

ABSTRACT

VASQUEZ, MARIA KATRINA MAGDAME. College of Arts and Sciences, University of the Philippines Los Banos, March 2004. ASSESSMENT of GROUNDWATER QUALITY in BARANGAY MARINIG (PUROK 4, 5 AND 6), CABUYAO, LAGUNA.

Adviser: Dr. Nieva T. Librojo-Basilio The quality of groundwater in ten sampling sites in Barangay Marinig (Purok 4, 5 and 6) was assessed every other month from October 2003 to February 2004. The parameters analyzed were pH, total dissolved solids cTDS), total hardness, chloride, nitrate, sulfate, surfactant levels, major cations (i.e. Ca', Me, Na' and K') and most probable number (MPN) of coliforms. The obtained ranges of values for each parameter are as follows: pH, 7.7 to 9.1; TDS, 105 to 389 pptn; total hardness, 217.84 to 563.52 pptn CaCO3; chloride, 5.16 to 47.26 ppm; nitrate, 0.02 to 1.88 ppm; sulfate, 0.51 to 47.97 ppm; surfactant levels as coconut fatty alcohol sulfates (CFAS), 0.039 to 0.0975 ppm; surfactant levels as linear alkylbenzene sulfonates (LAS), 0.135 to 0.247 ppm; calcium ion, 23.0 to 146.25 ppm; magnesium ion, 35.63 to 61.25 ppm; sodium ion, 6.25 to 75.0 ppm; potassium ion, 12.5 to 60.0 ppm; and total coliform, < 2.2 to 45 MPN/100 mL. Some of the values for pH, total hardness, surfactant levels as LAS, calcium ion, magnesium ion, potassium ion and total coliform count exceeded the Maximum Allowable Limit (MAL) for Class A (drinking water) set by the Department of Environment and Natural Resources (DAD 34, 1994) and Philippine Water Quality Standards for Drinking Water (DOH — AO 18-A). All the other parameters were within the MAL Statistical analysis using Single Effect Analysis of Variance (ANOVA) and Duncan's Multiple Range Test (DMRT) was perforated to determine the effect of variation with respect to time of collection, sampling site location, depth of well, age of well and their interactions on the parameters used. The effect of time of collection exhibited significant variations for pH, TDS, chlorides and nitrates. Sulfates, surfactant levels and calcium ion concentration, meanwhile, showed significant variations in terms of sampling site location. The age of sampling wells had significant effects on the total hardness, surfactant levels, calcium ion concentration and sodium ion concentrations. Only the surfactant levels exhibited significant differences with respect to depth of sampling wells.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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