A literature review and screening study suggest the feasibility of using low-cost organic materials within a permeable reactive barrier (PRB) to treat ura-nium-contaminated water. Natural peat deposits remove and sequester ura-nium from ground water under certain geochemical conditions while several species of bacteria, including Desulfovibrio desulfuricans precipitate soluble uranium from solution. Cation exchange capacities were measured for saw-dust and peat, materials to be used in construction of a small-scale PRB. Re-sults of a literature review and the cation exchange capacity measurements suggest that organic materials, such as peat, can be used to remove soluble uranium from contaminated water. © 2006 Wiley Periodicals, Inc.