The only negative impact that RootX has is on pipeline roots, not on the treatment plant or the surrounding environment. Registered with the EPA for use in both sanitary and storm pipe (EPA Registration # 68464-1), it is engineered to take the complexity out of chemical root control so that pipeline roots can be killed and pipe-flow capacity restored at minimal cost, training and environmental impact. If sewer crews can use a sewer jetter or vacuum truck, they can successfully kill pipeline roots with RootX. 800/844-4974; www.rootx.com; Booth #1617.