National Water Quality Standards For Malaysia Inwqs

Further analyses of data revealed that on average the sullage was equivalent to class v water as defined by the water quality index wqi in national water quality standards inwqs of malaysia.

National water quality standards for malaysia inwqs. Water quality index wqi 81 100. The department of environments is responsible for tracking the water quality in malaysia using water quality index and national water quality standards. Hydrological and physicochemical parameters and the water quality status was classified under the interim national water quality standards inwqs which tabulated six levels of pollution ranging from moderate to extremely polluted in the order of i iia iib iii iv and v. The national water quality standards nwqs in malaysia used to benchmark water quality is categorized into six 6 different classes.

On the interim national water quality standards inwqs a set of standards derived based on beneficial uses of water. Suspended solids ss 76 100. This table contains the most up to date criteria for aquatic life ambient water quality criteria. Histo ry and basis fo clas sification in 1985 the government undertook a national study dubbed the development of water quality criteria and standards for malaysia whose researchers.

Results from the study show that most. Biochemical oxygen demand bod 91 100. Explain the basis of the divisions and their respective beneficial uses. Since the standards is still not established the groundwater quality status was determined based on the national guidelines for raw water quality as the benchmark.

National water quality standards for malaysia parameter unit class i iia iib iii iv v al mg l 0 06 0 5 as mg l 0 05 0 4 0 05 0 1 ba mg l 1 cd mg l 0 01 0 01 0 001 0 01 cr iv mg l 0 05 1 4 0 05 0 1 cr iii mg l 2 5 cu. Ammoniacal nitrogen nh3 n 92 100. The ground water quality standards for malaysia is still not established but considering potential of groundwater as an alternative source for surface water doe had started the national groundwater monitoring programme to determine the groundwater quality status. Aquatic life criteria for toxic chemicals are the highest concentration of specific pollutants or parameters in water that are not expected to pose a significant risk to the majority of species in a given environment or a narrative description of the desired conditions of a water body being free.

Management guidelines and monitoring manual was published as part of the capacity building for the implementation of the asean marine water quality criteria project funded by the australian agency for international development ausaid under the asean australia development.