Investigators say Stevens Millancastro also put semen in her honey jar and on her computer accessories at an office in La Palma, prosecutors said.
Millancastro, aka Stevens Millan, was charged Friday with two counts of battery and three counts of attempted vandalism, all misdemeanors, according to a news release.
The charges include sentencing enhancements for committing the crimes for the purpose of sexual gratification.
At the time of the alleged crimes, Millancastro had worked with the victim since 2014, the Orange County District Attorney's Office said.
"Two times between November and December 2016, the defendant is accused of masturbating at their office in La Palma and putting his semen in the victim's honey jar," prosecutors said in a statement, referring to the woman as "Jane Doe." "Between Nov. 24, 2016, and Jan. 13, 2017, Jane Doe consumed the contaminated honey approximately every other day without knowing it contained the defendant's semen."
Millancastro allegedly ejaculated on two separate occasions into the victim's water bottle, which she discarded after noticing the water was cloudy.
After the woman noticed cloudy water in a third bottle on Jan. 9, she reported the incident to her supervisor, who then installed a surveillance camera in her office.
Millancastro was allegedly recorded on video as he entered her office before the next incident.
"On Jan. 13, 2017, Jane Doe sat at her desk and touched her computer mouse, which was smeared with semen," the news release said.
The alleged victim contacted La Palma police, who conducted an investigation and arrested Millancastro on Tuesday.
If convicted as charged, the defendant faces a maximum of two years and six months in county jail and lifetime sex offender registration, according to the district attorney's office.
Report a typo to the ABC13 staff