An inmate at the Washington County Jail assaulted another Wednesday. According to the Washington County Communications Office, at 2:20 p.m. the assault happened. A Washington County Sheriff’s deputy responded to the scene. Twenty-year-old Donald Eugene Williams was charged with assault causing serious bodily injury. Williams remains in the Washington County Jail.Earlier this year, Williams plead guilty to possession of a controlled substance methamphetamine and theft in the second degree.