Details regarding the number of cases and deaths from cancer of the bladder in Ireland are set out in the following table for the years 1994 and 1995. They have been supplied by the National Cancer Registry Board.
It is important to examine trends over a number of years before reaching definitive conclusions regarding the incidence of any particular cancer. A number of research studies have suggested that there may be an association between the consumption of chlorinated water and cancers, including bladder cancer. However, the evidence is difficult to interpret and no clear association has been established to date. Bladder cancer has a known association with cigarette smoking and certain industrial chemicals and dyes, and these exposures are highly preventable. Adequate disinfection of drinking water is essential for public health and the advantages of chlorination far outweigh any possible risks.