Yaworski Waste Lagoon

⚠ Superfund · Ready for anticipated reuse

After placing the site on the Superfund program’s National Priorities List (NPL) in 1983, EPA assessed site conditions and determined that contamination did not pose an immediate threat to area residents and the surrounding environment while waiting for long-term cleanup actions.

Location

CityCanterbury
CountyWindham County
StateConnecticut
Coordinates41.66945, -71.96416

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 06/27/1986
  2. Proposed to the National Priorities List — 12/30/1982
  3. Finalized on the National Priorities List — 09/08/1983
  4. Remedial Investigation Started — 03/30/1984
  5. Final Remedy Selected — 09/29/1988
  6. Remedial Action Started — 05/03/1990
  7. Final Remedial Action Started — 04/08/1991
  8. Construction Completed — 09/20/2000
  9. Deleted from National Priorities List — Not Yet Achieved
  10. Most Recent Five-Year Review — 09/26/2023

EPA references

Other Superfund sites in Windham County

EPA-regulated facilities nearby

Understanding this Superfund site

Yaworski Waste Lagoon is a federal Superfund site in Connecticut. 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: Ready for anticipated reuse. EPA considers this site ready for anticipated reuse, meaning cleanup has progressed enough for certain land uses. This does not necessarily mean all contamination has been removed — institutional controls like deed restrictions may limit how the land can be used.

EPA has identified 7 contaminants of concern at this site, including benzene, chromium, copper. Contamination has been detected in groundwater, sludge.

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.