AWWA RSP64381

This slide presentation explores this question: given the week-to-week, day-to-day, andeven hour-to-hour variation in disinfection byproduct (DBP) levels atthe point-of-entry (POE) and in the distribution system, whatis the meaning of a grab sample taken at 3-month intervals with respect to public healthexposure, and why is this the basis forcompliance monitoring?The presentation argues that, given this variability, our compliancemonitoring paradigm must change. It presents information that supports the statement that spatial and temporal variability in DBPlevels must be taken into considerationwhen developing a reliable compliancemonitoring program.These spatial and temporal variationsmust also be taken into considerationwhen assessing exposure inepidemiological studies. The presentation also states that regulations should address individualDBP species. It outlines information which argues that a better assessment of public exposure toHAAs requires the measurement of all ninebromine- and chlorine-containing HAAs; betterprotection of public health requires theregulation of all 9 HAAs. Includes figures.

Product Details

Edition:

Vol. - No.

Published:

03/01/2007

Number of Pages:

43

File Size:

1 file , 450 KB