Drinking Water Quality & Health
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Concentration of lead at customers taps’: Trends in monitoring data 1990 to 1998
Price: £100
Ref: 99/DW/04/8
ISBN: 1 84057 175 6
Lead statutory monitoring data from UK water companies for 1997 and part of 1998 were collected and entered into an Industry database. Three methods of statistical analysis (arithmetic mean, geometric mean nad median) were used to assess whether water qualtiy zones would comply with the current and future maximum permissible lead concentrations in drinking water (i. e. 50, or 10 m g/ l). The results were incorporated with earlier data to show trends in lead compliance between 1990 and 1998. The effect of phosphate dosing was assessed for some companies.
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