A man accused of sexually touching a female paramedic in Sydney's west remains behind bars after a magistrate ruled he was a risk to the community.

Garang Aguern was found slumped at a bus stop on Carpenter Street, Colyton at 4.20pm on Tuesday afternoon.

Mount Druitt father Garang Aguern is charged with sexually touching a female paramedic in Colyton on Tuesday. Credit:Nine News

A local real estate agent called triple zero, fearing Aguern had collapsed in the heat.

When help arrived, police allege the father was "incredibly intoxicated" and made "phallic gestures" towards a female paramedic.