Identification of monitoring stations in water distribution system

Article Abstract:

Arun Kumar and assoc have suggested a concept for finding the minimum number of monitoring systems in a water distribution network. Their collected data, however, represent their lack of understanding regarding the idea of total water quality. They used a parameter of residual chlorine with a dose of 122 mg/L which is highly irregular. Their results would have been more convincing if they had taken a value of residual chlorine at less than 0.1 mg/L while maximum recommended free chlorine residual is 0.2 ppm.

Research, Disinfectants, Chlorine, Chlorine and derivatives as disinfectants, Water quality monitoring stations, Kumar, Arun

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Interpreting negative virus counts in highly treated water

Article Abstract:

A critique on the work by David M. Crohn and Marylynn V. Yates on virus density confidence limits in treated water is presented. Crohn and Yates used the distributions of virus measurements from the County Sanitation Districts of Los Angeles County secondary effluents. Virus distributions were then computed from samples of highly treated disinfected effluents. Comments are made on their extrapolation method which may seem to be the best available method based on nonzero results from tertiary effluents.

Viruses, Water, Aquatic microbiology

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