Abstract: An oil-water separator system diffusing chamber having a diffuser and a baffle with uptake control means. The diffuser includes an attachment portion and a lower portion, with the attachment portion being secured to inlet conduit of the separator system, and with the lower portion being connected to the attachment portion and having flow channeling means. The diffuser has a first side and a second side, with the first side of the diffuser having formed therein a plurality of apertures. The baffle has a first side, a second side and a top edge. The uptake control means includes a plurality of pipes and a pipe restraining means, with each of the pipes having a first end, a second end and a sidewall, with at least one of the pipes having a sidewall with apertures formed therein. The pipes first ends are retained by the pipe restraining means adjacent the baffle first side and the pipes second ends are retained adjacent to the top edge.