Decontamination of Drinking Water Distribution System Infrastructure after Contamination with Untreated Source Water
Szabo, Jeff, J. Hall, AND J. Goodrich. Decontamination of Drinking Water Distribution System Infrastructure after Contamination with Untreated Source Water. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-20/116, 2020.
Provide Utilities with information to best decontaminate drinking water distribution piping after a loss of disinfection event.. Preliminary research was performed with sections of heavily tuberculated cast iron pipe obtained from a drinking water utility. These iron pipe sections were contaminated and decontaminated by filling and draining them, with stagnant water sitting inside the pipe during each phase of the experiment. The goal was to collect preliminary data with heavily tuberculated iron pipe, which may be harder to decontaminate than smoother cement-lined iron pipe.
This report summarizes the results of infrastructure decontamination experiments performed at the WSTB. These experiments focused on simulating contamination of drinking water distribution pipes with untreated source water due to a treatment failure at a water treatment facility. Loss of disinfectant experiments conducted at Idaho National Lab Water Security Test Bed