Cidra Groundwater Contamination

⚠ Superfund · Cleanup underway

EPA conducted a Fund Lead Remedial Investigation/FeasibilityStudy in order to determine the magnitude and extent of the contamination and to identified potential responsible parties. Water supply wells were closed after a survey detected contamination. A ROD was signed in September 30, 2014.

Location

CityCidra
CountyCidra County
StatePuerto Rico
Coordinates18.17528, -66.16194

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — Not Yet Achieved
  2. Proposed to the National Priorities List — 03/08/2004
  3. Finalized on the National Priorities List — 07/22/2004
  4. Remedial Investigation Started — 09/28/2005
  5. Remedy Selected — 09/30/2014
  6. Remedial Action Started — 09/30/2019
  7. Final Remedial Action Started — 09/29/2023
  8. Construction Completed — Estimated Sep - Nov 2027
  9. Deleted from National Priorities List — Not Yet Achieved
  10. Most Recent Five-Year Review — Not Yet Achieved

EPA references

EPA-regulated facilities nearby

Understanding this Superfund site

Cidra Groundwater Contamination is a federal Superfund site in Puerto Rico. The Superfund program, created by Congress in 1980, addresses sites where hazardous substances have been released or threaten release into the environment. EPA scores potential sites using the Hazard Ranking System; those that score high enough are placed on the National Priorities List.

Current status: Cleanup underway. Active cleanup is underway, meaning EPA has approved a remediation plan and work is in progress. Cleanup timelines vary widely — some sites take decades depending on contamination depth, groundwater involvement, and funding availability.

EPA has identified 5 contaminants of concern at this site, including 1,1-dichloroethene, chloroethene (vinyl chloride), cis-1,2-dichloroethene. Contamination has been detected in groundwater, soil, soil gas.

If you live near this site and have health concerns, your state health department can provide site-specific guidance. EPA maintains a community involvement program for most NPL sites, and site documents — including the Record of Decision, five-year reviews, and public health assessments — are typically available through EPA's Superfund site profile.