The 39-year-old ballplayer was picked up while in the Denver suburb of Thornton.
"We were extremely disappointed to learn that Todd was arrested this morning," the team said in a statement. "This type of behavior is taken very seriously by our organization. We know that he clearly understands the seriousness of his poor decision, the harm that could have been inflicted on others and the embarrassment his mistake has caused to himself, his family, the Colorado Rockies organization and to Major League Baseball.
"Todd is taking full accountability for his actions with his family, his fans and the organization. The man we have grown to know has strong values that are grounded in his family and hard work. Todd clearly understands the severity of the situation."
Helton, entering the last year of his contract with Colorado, has hit .320 with 354 home runs and 1,345 RBI during his career, spent entirely with the Rockies.