http://onlinelibrary.wiley.com/doi/10.1002/cncr.24159/abstractThis study, involving a lot more subjects showed a POSSIBLE relationship, but admitted in it's conclusion "additional studies need to be done." Truthfully, drinking water would likely be as risky, as referred to in this Article:
http://www.dailymail.co.uk/health/article-1023340/Chlorine-tap-water-nearly-doubles-risk-birth-defects.html