What can happen to my father for lying to CPS?

I am a sophomore in Highschool, and CPS was called because they believed i was being neglected (im just sweaty) and because i wrote a diary entry that my teacher saw about hating the person my father was seeing. (She's a ((potentially former)) drug abuser and dealer who's been to prison for possesion with intent to sell several times, every man she has dated has become addicted to drugs, and she's an ex girlfriend of my cousin) he lied to CPS and said he had only seen her once, and that she was completely clean. He saw her at least 2-3 times at that point, and afterwards took her with him on an 8 day 'business' trip. What can happen?