Puerto Rico's Corozal Well: Superfund Site Officially Retired
Published Date: 3/4/2026
Rule
Summary
The EPA is officially removing the Corozal Well site in Puerto Rico from the Superfund cleanup list because all cleanup work is done and no more action is needed. This means the site is now considered safe, but future cleanup could still happen if needed. The change takes effect on March 4, 2026, and shows progress in protecting communities without extra costs right now.
Analyzed Economic Effects
3 provisions identified: 3 benefits, 0 costs, 0 mixed.
Corozal Well Removed From NPL
The EPA officially deleted the Corozal Well site in Corozal, Puerto Rico from the Superfund National Priorities List, effective March 4, 2026. EPA and the Puerto Rico Department of Natural and Environmental Resources determined all required cleanup actions under CERCLA are complete and the remedy allows for unrestricted use of the groundwater.
Local Agencies Oversee Ongoing Monitoring
Puerto Rico agencies will be responsible for continued monitoring and regulation after deletion: the Puerto Rico Department of Natural and Environmental Resources (PRDNER) regulates well installation and franchises, and the Puerto Rico Department of Health (PRDOH) regulates operation of the water system and has overseen the Santana Well System since 2007. Operation and maintenance, monitoring, and five-year reviews may continue as listed in the NPL deletion docket.
Deletion Doesn’t Remove Future Cleanup Or Liability
The EPA stated that deleting the Corozal Well site from the NPL does not prevent future Superfund actions if conditions change; a deleted site may be restored to the NPL after a significant release. Deletion also does not affect responsible-party liability if future actions are needed.
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