No deadline was set for assuring adequate wastewater treatment in urban areas smaller than 2 000 people (it was 2005 for earlier EU members). As with wastewater connection rates, drinking water supply coverage shows regional differences: the Bratislavsky and Tmavsky regions in the west have the highest connection rates (99% and 97%, respectively) while in the TrenJiansky and the Presovsky regions 73% of the population is connected. Faecal contamination, nitrates and iron are the most frequent parameters exceeding the limits.