Department of Utilities Notices

Saltwater Intrusion

St. Tammany Parish Government Department of Utilities operates 19 ground water systems with a total of 34 well sites throughout the Parish. All of our wells draw water from underground aquifers and are not influenced by the Mississippi River, therefore the saltwater wedge traveling up the Mississippi River will have no effect on any of our water wells or water sources and our water remains safe to drink.


  • Date of Notice: Wednesday, 27 September 2023
  • Type of Notice: System Notice
  • Boil Advisory Status: Not applicable to this notice


Contact Us

  • Administrative Complex
    21490 Koop Dr.
    Mandeville, LA 70471

    Hours of Operation:
    Monday through Friday
    8:00am to 4:30pm