To add yet another question to the long list of tap-water, the US CDC for the Dominican Republic says Don’t Drink Tap or well water, but there is no mention of water concerns on gov.uk for the DR. The US warning is not everywhere (e.g., according the the CDC for the UK Food and water standards in the United Kingdom are similar to those in the United States) and gov.uk for Mexico says Drink only boiled or bottled water and avoid ice in drinks.
I am staying at an all inclusive high end resort in the DR. Avoiding drinking tap water directly should not be that hard, but ice and unwashed or unpeeled fruits and vegetables (which the CDC recommends against will be harder). I have heard rumors that some resorts use filtered water for cooking and ice.
How can I reliable determine if I need to worry about water at a resort in the DR?