The Moresby Island Management Committee is moving ahead with a feasibility study to see if a nanofiltration treatment system would help improve Sandspit's water system.At the last committee meeting, chair Evan Putterill said a group of five engineering firms have been shortlisted to do the study and a decision about who to hire should be made soon.Mr. Putterill said the study should answer questions like whether nanofiltration is a good option for Sandspit, and how much such a system would cost. Although the community's water is treated with chlorine, there are concerns about the level of trihalomethanes - byproducts that occur when organic residue interacts with chlorine. A nanofiltration system may be able to address these concerns.The regional district received a $10,000 grant from the province for the study.