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.
Personalized for You
How does this regulation affect your finances?
Personalize government policy and PRIA will tell you what this federal register document means for your household, plus every other regulation we track. PRIA reads each provision against your financial profile to show you exactly what matters to your wallet.
Key Dates
Department and Agencies
Related Federal Register Documents
2026-13667, Minor New Source Review Program Air Permitting Public Participation Requirements for State Implementation Plans
The EPA wants to give states more freedom to decide how much public input is needed when approving small air pollution sources or changes. This means local air agencies can tailor public participation to fit their community’s needs while still protecting air quality. If you’re involved in air permits, watch for comment deadlines and possible virtual hearings this summer!
2026-13263, Revisions To Establish the Sixth Unregulated Contaminant Monitoring Rule (UCMR 6) for Public Water Systems
The EPA is rolling out the sixth Unregulated Contaminant Monitoring Rule (UCMR 6) to check for new, sneaky chemicals in public drinking water. Big water systems serving 3,300+ people and some smaller ones will test for 30 different contaminants, including certain PFAS and pesticides, to keep our water safe. Comments and feedback are open until late August 2026, and the EPA will host fun online meetings to chat about the plan!
2026-12927, U.S. Ecology Nevada, Inc. High Mercury Subcategory Wastes Land Disposal Restrictions Variance
The EPA is giving U.S. Ecology Nevada a special green light to handle and dispose of high-mercury waste a bit differently than usual. This means mercury waste treated in Pennsylvania can now be safely sent to U.S. Ecology’s Nevada site for disposal under new rules starting July 27, 2026. This change helps protect people and the environment while keeping mercury waste management efficient and cost-effective.
2026-11047, National Emission Standards for Hazardous Air Pollutants From Hazardous Waste Combustors: Residual Risk and Technology Review
The EPA just updated rules for places that burn hazardous waste, like incinerators and boilers, to keep the air safe and clean. They confirmed current standards work well but added new limits on harmful gases like hydrogen fluoride and hydrogen cyanide. These changes start June 3, 2026, and include easier electronic reporting and some new rules for startup and shutdown times—helping protect health without big costs.
2026-10641, Hazardous and Solid Waste Management System: Disposal of Coal Combustion Residuals From Electric Utilities; Federal CCR Permit Program; Reopening of Comment Period
The EPA is reopening the comment period until June 29, 2026, for its proposed rule to create a federal permit program for safely disposing of coal ash from power plants. This affects electric utilities that handle coal waste and aims to improve environmental safety while possibly impacting their costs. Now’s the time for everyone to share their thoughts and help shape the rules!
2026-10387, Phasedown of Hydrofluorocarbons: Reconsideration of Certain Regulatory Requirements Promulgated Under the Technology Transitions Provisions of the American Innovation and Manufacturing Act of 2020
The EPA is updating rules to phase down hydrofluorocarbons (HFCs), chemicals used in cooling systems like refrigerators and air conditioners. These changes affect businesses in refrigeration, supermarkets, semiconductor manufacturing, and more, allowing some older equipment made before 2025 to keep running. The new rules kick in on July 27, 2026, helping industries transition smoothly while cutting harmful emissions.
Previous / Next Documents
Previous: 2026-04315, Cooperation With the Office of Special Counsel of the Merit Systems Protection Board
The Department of Defense is officially removing an old rule about working with the Office of Special Counsel to investigate workplace problems. This change affects DoD staff but doesn’t impact the public or cost any money. The update takes effect on March 4, 2026, cleaning up outdated rules to match current policies.
Next: 2026-04329, Farmer Bridge Assistance (FBA) Program; Approval of Information Collection Request
The Farmer Bridge Assistance (FBA) Program just got the green light for its paperwork from the government, making it official and ready to roll! This means farmers who planted eligible crops by December 19, 2025, can apply for payments using simpler, pre-filled forms. The program’s info collection is approved through October 2027, helping farmers get financial support faster and easier.