Lead monitoring

1 Factors Determining the Lead Concentration in Drinking Water 

1 The Requirements for Sampling and Monitoring Lead in Accordance with the DWD 98/83/EC 

Analytical Methods for Drinking Water Advances in Sampling and Analysis Edited by P. Quevauviller and K. C. Thompson 2006 John Wiley Sons, Ltd. ISBN 0-470-09491-5 

1 FACTORS DETERMINING THE LEAD CONCENTRATION IN DRINKING WATER 

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Blood lead monitoring during chelation. Obtain a blood lead measurement immediately prior to chelation and recheck the measurement within 24-48 hours after starting chelation to confirm that levels are declining. Recheck measurements 1 and 7 to 21 days postchelation to assess the extent of rebound in blood lead level associated with redistribution of lead from high bone stores, and/or the possibility of reexposure. Additional courses of treatment and further investigation of exposure sources may be warranted. 

WRc performed a detailed study and a statistical assessment of water use in the United Kingdom in relation to the problem of lead monitoring at the consumer s tap (Bailey et al, 1986b). The study covered 100 households in 22 districts in England, Scotland and Wales. The consumption of water, with distinction between potable and non-potable use, and time of use, was recorded for each household during one week. The results of the study are summarized in Table 3.1. 

Lead Monitoring Table 3.3 Test-area characteristics ... 

According to the Drinking Water Directive, lead monitoring at the tap should be based on representative sampling at the consumer s tap. The lead value determined by a monitoring protocol should be very close to the true average weekly intake. This approach ensures the safety of individual consumers. The sampling method should be representative and accurate. 

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