I use a Sawyer Micro Squeeze and an Evernew Bladder for dirt water.
For the clean water side, I use a Platypus Hoser... but I've replaced the stiff hose with a three foot section of food grade silicon tubing. The hose is connected to the Micro Squeeze via the female half of a Sawyer inline adapter. I've also added a loop of string to the bottom of the Evernew bladder, using a hole punch in the margins of the bladder so that the dirty water bladder could be hung for gravity feed.