WATER QUALITY SURVEY
Water quality survey is the programmed process of sampling, measurement and subsequent recording of
various water quality parameters, with the aim of assessing conformity to specified objectives.
Water survey or monitoring programme aims at generating water quality data that is justified, complete
and accurate.
WATER QUALITY
Water quality describes the condition of the water, including chemical, physical, and biological
characteristics, usually with respect to its suitability for a particular purpose such as drinking or
swimming.
WATER SAMPLING:
This is the act of collecting a portion of water source for analytical purposes that accurately represents the
body of water being sampled with respect to stated objectives.
The objective of sampling is to collect a portion of from the water source that is small enough in volume
to be transported conveniently to the laboratory and yet large enough for analytical purposes while still
accurately representing the water source being sampled.
Frequently the overall objective of water sampling and analysis is to demonstrate whether continuing
compliance with specific regulatory requirements has been achieved.
Samples are presented to the laboratory for specific determinations with the sampler being responsible for
collecting a valid and representative sample.
Sampling Methods
a. Manual sampling:
Manual sampling involves manually collection of samples using minimal equipment. Manual sampling
may be unduly costly and time-consuming for routine or large-scale sampling programs.
It requires trained field technicians which is necessary for regulatory and research investigations.
b. Automatic sampling:
This involves the use of automatic samplers. Automatic samplers can eliminate human errors in manual
sampling, reduce labor costs, and may provide the means for more frequent sampling,