Rhondda MP Chris Bryant and Plaid Cymru leader Leanne Wood have spoken out about the MTV series, which features nine housemates who are taken out of the Valleys and moved to Cardiff.
The first episode featured the cast bragging about their oral sex skills, with one female regularly flashing her boobs, another female urinating on her co-stars and one posing with only fish covering her modesty during a beach photoshoot.
> 'The Valleys' on MTV - review: The grubbiest TV show ever?
"It's called The Valleys but it doesn't happen in the Valleys, it happened in Cardiff. It's all about people getting very drunk and being as deliberately outrageous as they possibly can be. That's not what the Valleys are like," Bryant told Wales Online.
"You would have thought they would have had at least one person that liked the Valleys on a programme called The Valleys.
"It gives the impression there's no life in the Valleys whereas actually the vast majority of people of working age in the Valleys work and have a very nice home."
Wood branded the series "a dull, cheap, tacky and over-promoted television programme".
"I think people from MTV should maybe come to the Valleys to see what it is really like," she added.
Watch our video interview with the Valleys boys:
The Valleys airs on Tuesday nights at 10pm on MTV.
The Valleys cast - In Pictures: