Besides the water cells, check out the wooded areas for passerines.

Most everything. Shorebirds, waterfowl, gulls, warblers and other passerines. 

Management of the Sewage Ponds are birder friendly. Just sign in at the office. Be mindful the location closes at 4PM so be sure to sign out at the office and leave before 4PM when staff locks the gates.  Hours are M-F 8AM-4PM.  

The location offers four habitats. Water (of course), grasslands, woods, and the sand pits (sometimes with water.).  The habitat variety provides many excellent opportunities for birders.