Valley Environmental Service issued a Valleywide special alert this week regarding medical waste contamination.
According to VES, the waste-collection company has been experiencing a significant contamination problem in its El Centro processing facility.
The company has faced problems with its curbside recycling program in that some residents have continued to place household waste and other non-recyclable items in their recycle bins.
Recently, the company has seen medical waste placed in the recycling containers, which has caused some concern.
"Medical waste such as needles, syringes, lancets and other sharp objects cannot be processed at our facility," said Bob Douthitt, VES El Centro plant manager.
Douthitt said his plant encountered more than 200 needles over the past weekend.
Douthitt said many residents who use hypodermic needles in their homes aren't placing them in the proper VES containers.
"People need to treat this as a real hazardous material," said Douthitt. "Any medical waste should be placed in the black containers."