Hope this is of help,
Sunday: Meyres Pool Denver, and i think some pool in Boulder
Tuesday: DU pool Richie center, and Golden Rec-center
Wednesday: CU pool (CU students only)
Thursday: Golden Rec-center
Friday: CU pool (CU students only)
These are the ones I know about but more are added throughout the off season like in Evergreen last year, plus there are even more outside the metro area, and probably several i don't know about. Occasionally you can "talk" ($) your local lifeguard or courtious rec-center staff into alowing you to goof around during some off hours. If this doesn't give you your chlorine fix, or at least totally ruin your spray skirt, check out the "retail, instruction, jobs" forum of the buzz i think i remember seeing some posts there. enjoy!