These products support the design and implementation of Online Water Quality Monitoring (OWQM), a component of a Surveillance and Response System (SRS).
Event Detection System Deployment, Integration, and Evaluation System (EDDIES) - A software application that supports real-time data analysis for OWQM and the evaluation of valid and invalid alert rates.You may need Adobe Reader to view files on this page. See EPA’s About PDF page to learn more.
Online Source Water Quality Monitoring for SRSs (PDF)(114 pp, 8 MB)
Provides guidance for designing a real-time source water quality monitoring system to achieve a variety of design goals, including: treatment process optimization, detection of source water contamination incidents, and monitoring threats to long-term source water quality.
Exploratory Analysis of Time-series Water Quality Data (PDF)(36 pp, 2 MB)
Provides guidance for analyzing time-series water quality data in order to methodically characterize normal variability and identify the factors that impact water quality at individual monitoring locations. The exploratory analysis should be performed prior to real-time operations so that the real-time water quality data can be properly interpreted.
Distribution System Water Quality Monitoring: Sensor Technology Evaluation Methodology and Results (PDF)(60 pp, 1 MB)
Provides a summary of the ability of various OWQM sensors to detect a wide range of contaminants. Describes the operation and maintenance requirements of each.
Guidance for Designing Communications Systems for Water Quality Surveillance and Response Systems (PDF)(69 pp, 2 MB)
Provides guidance for designing communications systems used to transmit data from remote monitoring locations to a control center, supporting operation of online water quality monitoring and enhanced security monitoring.