Mississippi Phosphates Corporation

⚠ Superfund · Listed on NPL

The MPC Site has been divided into four operable units (OUs): OU-1 encompasses soil contamination at the former 106-acre manufacturing plant area; OU-2 includes both the WGS and EGS; OU-3 involves long-term leachate collection/treatment from the WGS/EGS; and OU-4 will encompass site-wide groundwater, along with the adjacent Bayou Casotte and Grand Bay Est...

Location

CityPascagoula
CountyJackson County
StateMississippi
Coordinates30.37210, -88.49101

Cleanup timeline

  1. Initial Assessment Completed — 04/11/1984
  2. Proposed to the National Priorities List — 08/02/2017
  3. Finalized on the National Priorities List — 01/18/2018
  4. Remedial Investigation Started — 09/30/2020
  5. Remedy Selected — Estimated Nov 2026 - Jan 2027
  6. Remedial Action Started — Estimated Mar - May 2028
  7. Construction Completed — Estimated Jun - Aug 2028
  8. Deleted from National Priorities List — Not Yet Achieved
  9. Most Recent Five-Year Review — Not Yet Achieved
  10. Achieved Sitewide Ready for Anticipated Reuse — Not Yet Achieved

EPA references

EPA-regulated facilities nearby

Understanding this Superfund site

Mississippi Phosphates Corporation is a federal Superfund site in Mississippi. 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: Listed on NPL. This site is on EPA's National Priorities List, which identifies the most serious uncontrolled or abandoned hazardous waste sites in the country. Listing triggers federal cleanup authority and funding under CERCLA (the Superfund law).

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.