The course will discuss an overview of the clean water act and other administrative order by the Department of Environment and Natural Resources (DENR) regarding water quality criteria and approved methods of analysis. It will tackle proper sample collection technique, water sample storage, transportation and preservation per water quality parameter approved by the Philippines’ standards. It will discuss the principles of the analysis of wastewater in pH, dissolved oxygen, biological oxygen demand, chemical oxygen demand, color, total suspended solids, oil and grease, inorganic phosphates, nitrates and ammonia, using the approved methods set by the DENR. It will also discuss the different water quality parameters’ correlation with each other and their effects on the ecology of our water systems.