On August 14, EPA will conduct a webinar comprised of two presentations. The first presentation will describe methods for conducting an exploratory analysis of historical water quality data collected from a water distribution system using online monitoring instruments. The purpose of an exploratory analysis is to characterize normal baseline conditions and identify the causes of normal changes in distribution system water quality at monitored locations. The second presentation will describe how source water constituents of concern can be estimated in near-real-time using continuous water-quality data. The basic data collection requirements and statistical methods needed to develop these relations will be discussed. Examples of this work from existing United States Geological Survey (USGS) studies will be presented, including the use of continuous water-quality data to estimate abundancies of cyanobacteria and associated toxins on the Kansas River. Collaborative opportunities with the USGS will be described to highlight how water-quality studies can be tailored to meet the needs of individual drinking water utilities. A flyer posted below provides additional information on this webinar. Register at GoToWebinar.