How to keep fabric shower curtain clean and free of mildew?

The problem may boil down to poor ventilation in your bathroom. If you don't have a plastic liner, get one. Make sure the exhaust fan is adequate for the number of showers. Make sure the family all turn on the fan during and after every shower.

http://www.getgreenbewell.com/how-to-prevent-mold-on-a-shower-curtain/

Are you using a heavy plastic liner behind it? Since you already have the mold in it, you could try washing it with bleach.... But you may have to start over with a new one, and use a plastic shower curtain behind it, to keep it from getting wet.

Try a new fabric curtain with a plastic liner behind it.

I was my fabric Shower curtain liner once a month in the washing machine with white vinegar a little baking soda and some laundry detergent! I think the mildew is unfortunately inevitable because of the shower!

Mildew on the shower curtain is your "canary". Your bathroom is undoubtedly damp all the time. Eventually mold will find a home. Likely behind the sheetrock or in the ceiling or in the insulation in the attic space. Mold abatement is an expensive and disruptive affair. Perhaps your family would be more compliant if they understand the risks and the possibility of a gutted bathroom and all that entails. If you're heading out leave the fan on.

Thanks a lot everyone for your tips :)

Good luck!

Throw it in with wash!

I have a fabric shower curtain that seems to turn orangeish at bottom. I wash it monthly but doesnt completely come out. I leave curtain closed after shower..I wash tub weekly...why is this continues happening?