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EPA Study on Radiological Contaminant Persistence and Decontamination in Drinking Water Pipes

EPA has published a research paper on radiological contaminant persistence and decontamination in drinking water pipes. The objective of this study was to use the Pipe Decontamination Experimental Design Protocol (PDEDP) to evaluate the persistence of cesium, cobalt, and strontium on concrete and polyvinyl chloride (PVC) and explore possible decontamination approaches. The results of study showed which radioactive substances were persistent on PVC or concrete and which decontamination methods could effectively remove them.

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epa radiation contaminants pvc concrete water pipes

EPA Protective Action Guide for Radiological Incidents

On June 6, EPA released a draft Protective Action Guide (PAG) and planning guidance for radiological incidents. This PAG is intended to guide water systems in protecting against short-term health risks during response to radiological incidents. It explains how to calculate Derived Response Levels (DRLs) for radionuclides likely to appear in drinking water following a radiological contamination incident. DRLs are concentrations of radionuclides in drinking water that correspond to EPA’s proposed PAG of 100 mrem and 500 mrem.

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epa pag radiation radiological incidents
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