id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-016564-od9mf2f2	Capodaglio, Andrea G.	Online Monitoring Technologies For Drinking Water Systems Security	2009		.txt	text/plain	6409	249	32	More stringent constraints placed nowadays on water companies to provide high quality drinking water, increasing water resources scarcity in many areas of the planet, forcing water companies to work on marginal water bodies for supply, and the threat of hostile actions by political extremists and terrorist groups, that may willingly and deliberately cause contamination of an otherwise safe supply, are recent issues that have spurred demand for more efficient and comprehensive online water monitoring technologies. Monitoring requirements can be defined in relationship to: • Source water quality: (a) variability, in space and time (very low for groundwater, low for lakes, high for rivers); (b) vulnerability (type and location of possible contaminating activity), time-of-travel of the contaminant to the intake, effectiveness of barriers, control options after an alarm • Water treatment: process optimization options and response times, sampling frequency must allow adequate process control • Distribution systems: minimization of deterioration of water quality over time and distance, early detection of cross-connections and water losses In addition, it must be considered that online monitors could have different sensitivity and selectivity according to the matrix and range of concentrations analyzed.	./cache/cord-016564-od9mf2f2.txt	./txt/cord-016564-od9mf2f2.txt