Water Analysis of the 402-meter Zapote River Located at Springville I to Nazareth Subdivision Molino III, Bacoor, Cavite

Abstract

INTRODUCTION

Most diseases around the world involve water and sanitation. To prevent this, improvement in water quality is a must. As the year's pass, the population grows bigger which causes fecal pollution of water that increases the risk of infection of various diseases to those who use the river water as their life-supporting water source (Rand Water, 2019). This study "Water Analysis of the 402 meters Zapote River located at Springville I to Nazareth Subdivision Molino III, Bacoor, Cavite" aims to determine the water quality of the Zapote River and identify if the river passed the standard water quality from the Department of Environment and Natural Resources Administrative Order No. 2016-08 (DAO 2016-08) for a class C river.

METHODS

The river water was collected in three sampling points (upstream, midstream and downstream) to determine the values of the parameters: pH, biological oxygen demand (BOD), dissolved oxygen (do), total suspended solids (TSS) and fecal coliform. After collecting the water samples, it was submitted to the Cavite Water and Wastewater Testing Laboratory located in Provincial Capitol Compound, Luciano, Trece Martires City, Cavite.

RESULTS

Results showed that total suspended solids and BOD of the upstream, midstream and downstream of Zapote river and the standard water quality from DAO 2016-08 for a class C river have a significant difference. These parameters did not pass the standard value of the standard water quality from DAO 2016-08 for a class C river, while the parameter pH indicates that there is no significant difference between the standard value and the actual value of Zapote river which means that it passed the standard water quality of DAO 2016-08 for a class C. Since the parameters DO and fecal coliform gained a perfect data, statistical analysis is not applicable. Although pH and TSS passed the standard value, the other parameters did not. Thus, the null hypothesis was rejected. It can be concluded that the Zapote river is not a class C river. This river is not advisable to be used for agricultural and recreational use.

DISCUSSIONS

Zapote river did not qualify the water quality guidelines of DAO 2016-08 due to improper sewage management. The quality of water is not advisable to use for agriculture and fishing since it is notably polluted. The results showed that the river now belongs to the Class D river which its intended beneficial use is only one of the navigable waters of the Philippines.