Groundwater Contamination Groundwater contamination is a serious environmental concern. From the statements below, select all of the true statements about how contamination moves in groundwater. Contamination is drawn out parallel to the direction of groundwater flow Some contamination can be naturally fittered by materials through which the contaminated groundwater flows. Contamination flows outward in all directions from its source. Groundwater contamination typically moves with the groundwater down the slope of the water table..