Austin Chronicle by Steve Davis

It’s McHattie’s bizarre turn as the beleaguered town’s mayor that steals this show. Taking his cue from another infamous Ontario public servant, he gives a performance that can only be described as bat-shit crazy. Fitting, eh?

The A.V. Club by Jesse Hassenger

As if the ravings of a lunatic weren’t dull enough, Septic Man eventually becomes the ravings of an idiot too.

Variety by Geoff Berkshire

Jack’s predicament is both revolting and claustrophobic, but he never emerges as any kind of hero or villain, just a passive victim, which makes the pic’s most off-putting quality its endless tedium.

Village Voice by Nick Schager

Just as dispiriting as its lack of scares (or sense of humor) is Septic Man’s lack of purpose -- devoid of any commentary, the film pointlessly wallows around in the muck, thereby making itself as valuable as those nasty things routinely flushed down the toilet.

Los Angeles Times by Gary Goldstein

It's a grotesque, deadly dull piece of cinematic upchuck, a horror film minus tension or chills.

The Hollywood Reporter by Frank Scheck

Featuring a non-stop barrage of gross-out effects depicting the substances that its title would indicate, this low-brow horror film is mainly suitable for audiences desperately pining for yet another "Toxic Avenger" sequel.

The Dissolve by Charles Bramesco

Beyond its mere unfunniness and stupidity, Septic Man is criminally unimaginative.