In-situ water quality assessment at recretional lake by using grab sampling technique

Sampling surface water sample are taken from rivers, lakes and similar surface waters. The simplest, a grab sample is taken at a selected location, depth and time. Normally, the quantity of water taken is sufficient for all the physical and chemical analyses that conducted on the sample. Sometimes, if the sampler is small, many analyses are necessary. Such as two grab samples collected at the station and then mixed in the same transport container. The grab samples are also known as spot or snap samples. This technique is a single sample or measurement collected at a specific time or over as short a period as is feasible. A sample taken at a specific time and point gives an indication of the water quality. Grab samples provide an immediate sample, and are thus preferred for some tests. This is the most common type of sample and is the sampling technique used for most labs. A grab sample also known as a catch sample or individual sample. This study, conducted at the recreational lake near Faculty of Civil Engineering and Environment, Universiti Tun Hussein Onn (UTHM), Malaysia. The samples collected at three different points. This chapter aims to provide general and specific procedures, methods and considerations when collecting surface water samples by using the grab sampling technique. Therefore, the knowledge form this chapter is able to adapt the accurate procedures for water sampling, handling, storage and analyze the selected parameters. Besides, the reader will be able to implement correct working procedures and manage the water analysis determination.