Assessment of quality of groundwater in Sala, Cabuyao, Laguna

Date

3-1994

Degree

Bachelor of Science in Agricultural Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Nieva T. Librojo-Basilio

Abstract

The quality of groundwater as a source of drinking water in Sala, Cabuyao, Laguna was evaluated in the months of August, October and December, 1993. The physico-chemical and bacteriological characteristics of the groundwater were studied. Among the parameters analyzed were pH, temperature, alkalinity, chloride, hardness, sulfate, total dissolved solids, major cations K, Mg, Ca). trace metal (Pb) and total coliforms. All values obtained in physico-chemical analysis were within the Maximum Acceptable Level (MAL) set by the Bureau of Food and Drugs (BFAD). For the microbiological specifications, however. there were two sites with MPN greater than the MAL set by BFAD. The data obtained except for temperature and bacteriology were statistically analyzed using Randomized Complete Block Design (RCBD). The values of groundwater temperature of the ten sampling sites observed for August, October and December were constant at 29°C, 28.5°C and 27°C respectively and the values of pH ranged from 7.0 to 7.8. Alkalinity gave values in the range of 83.67 to 103.71 ppm. Chloride concentration ranged from 8.86 to 117.22 ppm. Total dissolved solids was observed to he in the range of 279 to 731 ppm. Sulfate concentrations ranged from 3.44 to 25.43 ppm. Hardness as CaCO3 ranged from 176.52 to 848.86 ppm. The concentrations of major cations ranged from 15.53 to 40.57 ppm for sodium, 0.78 to 3.86 ppm for potassium, 29.42 to 153.98 for calcium, and 9.42 to 55.19 ppm for magnesium. Lead concentration ranged from 0.010 to 0.042 PP.. The MPN of conforms for two sites that exceeded the MAL set by BFAD were 99 MPN/mL and 43 MPN/ml. The possible presence of coliform organisms were determined by the confirmatory test. Escherichia coli and Enterobacter were found to be present in the said water samples. Analysis of variance (ANOVA) at 1% level and Duncan's Multiple Range Test (DMRT) at 5% level were done to test the significance of each parameter with respect to sampling sites and date of sampling.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1994 A13 M37

Document Type

Thesis

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