The water treatment facility for a small city in Kansas experienced a "cybersecurity incident" on the morning of Sept. 22. Arkansas City — population 12,000, a two-hour drive north of Oklahoma City — sits at the junction of the Walnut and Arkansas Rivers, the latter of which supplies the town's drinking water. A notice from the city's Environmental Services Administration revealed that on Sept. 22, its treatment facility experienced a "cybersecurity incident." Authorities were contacted and precautionary measures taken. Most notably, the facility moved to fully manual operations — a temporary decision made "out of caution," according to city manager Randy Frazer in the notice.