Based on data from the Puerto Rico Department of Health and PRASA, the water wells that are still in use are in compliance with the drinking water standards. To protect people's health, Puerto Rico is required to sample wells regularly and wells that have elevated levels of contamination are addressed accordingly.

On April 6, 2016 the U.S. Environmental Protection Agency proposed adding the Dorado Groundwater Contamination Site in the municipality of Dorado, Puerto Rico to its Superfund National Priorities List of the country's most hazardous waste sites. Sampling at the site has found chemical contamination that is impacting wells used to supply drinking water to the local communities.