Wallace Carmalt, 47, is charged with four counts of lewd or lascivious act on a child under 14 and one count of continuous sexual abuse of a child under 14 - resident child molesting, according to district attorney's office spokeswoman Amy Cornell.
He was arrested on July 20 at his apartment following an investigation by Morgan Hill police regarding past allegations of child molestation, according to the Morgan Hill police.
The victim, a 19-year-old woman, told police that Carmalt had allegedly sexually abused her between 1999 and 2005 when she was between 8 and 13 years old, police Sgt. Jerry Neumayer said. Carmalt was a friend of the victim's family and lived with them at the time in Morgan Hill, he said.
Neumayer said police are still processing evidence recovered from Carmalt's apartment, such as computers and other electronics.
Carmalt remains in custody at Santa Clara County's main jail on $1 million bail, Cornell said.
He is expected to enter a plea Tuesday.
Anyone with information about the case is encouraged to contact Detective Thomas at (408) 779-2101 or the anonymous tip line at (408) 947-STOP (7867).