While government officials scramble to rid Flint's tap water of lead, victims are suing Gov. Rick Snyder, the former mayor, rank-and-file public employees and almost anyone else who may have had a role in supplying the troubled city with corrosive river water for 18 months. The lawsuits accuse them of violating civil rights, wrecking property values and enriching themselves by selling a contaminated product. Lead affects the central nervous system, especially in children aged 6 and younger, and can cause learning problems and hyperactivity. While key facts are undisputed — the untreated river water caused lead to leach from old pipes — these cases still are no slam-dunk for lawyers specializing in personal injury. The lawsuit said the D.C.