British actress Emma Watson fell sick on the set of biblical epic Noah, starring Russell Crowe, after drinking a mug of stagnant water.
Director Darren Aronofsky banned plastic water bottles on set to keep the production environmentally-friendly, but after hours of filming in the early hours of the morning, Watson was desperate for a drink and accidentally sipped from a cup which had been sitting in her trailer for three months.
Watson tells Wonderland magazine, "Everything we used had to be recycled or recyclable. Having no water bottles on set at five in the morning, when you're exhausted and delirious, wasn't ideal.
"I was so tired one morning I picked up a mug from my trailer and drank some stagnant water that had been there for the duration - so three months. I was so ill."
Rather than give the Harry Potter star a day off sick, Aronofsky insisted she used her illness in the film.
Her co-star Ray Winstone didn't fare much better during filming. He struggled with the soaring temperatures and almost fell down some stairs after he was overcome with heat exhaustion.
The film - in which Winstone stars as Noah's (Crowe) nemesis Tubal-Cain - was shot in New York at the height of summer.
"We started filming in the summer in New York. It was so hot that Ray Winstone at one point, who wore a beard and heavy make-up, nearly fell down a flight of stairs. His make-up was literally melting off his face," Watson said.
Noah is due for release in Australian cinemas on March 27.
