*2.2. Program Elements*

In its early years, the focus of MWQI was to establish and maintain a discrete or grab-sample monitoring program that could identify sources of contaminants to the Delta, elucidate how contaminants from each source are transported through the system, and evaluate how they affect concentrations at drinking water intakes. Program data were used to build scientific understanding and to inform a variety of regulatory efforts such as SWP watershed sanitary surveys. As the program evolved, its scope has expanded to include real time data collection, water quality forecasting, and targeted scientific studies.
