Yes, rainwater collected from Tilcor roofs is safe to consume. After your new roof has been installed you need to wait for two good rainfalls before beginning collection.
Tilcor panels have been tested and meet the World Health Organisation standards for water run off, meaning you can drink water from a Tilcor roof, other roofing products, like Asphalt Shingles can break down and can become toxic after a few years.
                                                USA
                                            
                                                Canada
                                            
                                                Tilcor Europe
                                            
                                                Poland
                                            
                                                Ukraine
                                            
                                                Croatia
                                            
                                                Norway
                                            
                                                Slovenia
                                            
                                                Slovakia
                                            
                                                Romania
                                            
                                                Kazakhstan
                                            
                                                Russia
                                            
                                                United Kingdom
                                            
                                                New Zealand