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Contaminant Warning System

ClientPhiladelphia Water Department
LocationPhiladelphia, PA
ServicesWater and Wastewater Engineering

Philadelphia Water Department Contamination Warning System

The Philadelphia Water Department (PWD) completed a Contamination Warning System (CWS) Demonstration Pilot Project under the U.S. Environmental Protection Agency’s (USEPA’s) Water Security Initiative (WSI). R2T was part of the team which helped integrate multiple sensors and data streams in order to promote early and rapid detection of a water contamination event. R2T was involved with the development of Non-Analytical Quality Assurance Project Plans, Design of On-line Water Quality Monitoring (OWQM) stations, and weekly/monthly maintenance of OWQM stations of the Philadelphia Water Department.

Our team reviewed water quality data and standard operating procedures for several water quality parameters. R2T generated daily water quality reports for each station in the distribution network, conducted a study to evaluate the online instruments’ bias in relation to the bench instruments, and evaluated online and grab sample data for 17 OWQM sites for various water quality parameters. Our team also assisted with the development of an EPA contaminant response study for bench scale testing of water quality contaminants.

R2T developed public health surveillance operational strategy process flows and checklists for water quality investigations for the Department of Public Health (PDPH) and the Environmental Health Services (EHS). Our team developed scenarios and served as a controller at all HSEEP drills and exercises conducted as well as developed improvement plans and After Action Reports for operational strategy drills.

A Review and Evaluation plan for the CWS pilot was developed to track and evaluate metrics for reach component and the entire system. R2T assisted with the collection of data for 10 stations, evaluated the Data Management System (WISKI) flags and performance reports. In addition, R2T evaluated sensor performance over time, monitoring station availability and usable data generated by the sensors for the Event Detection System.