Around 150 Caroline County residents may have to find a new place to live by this summer.
They live in the Cedar and Hilltop Mobile Home Parks which have been ordered closed by the Maryland Department of Health and Mental Hygiene.
For years there have been complaints about excessive arsenic in their drinking water and an inadequate sewage disposal system.
Both properties are owned by Shahi International Investments of Brookeville.
Marydel Mayor Debbie Rowe told WMDT that "Its bad. Really Bad."