Causeway Coast and Glens Borough Council are asking members of the public to report any incidents of vandalism.
The call comes after broken glass was found at a play park in Coleraine last week.
On Wednesday, broken glass was discovered at a play park in the Millburn estate.
The park, which is well used by children in the area, is located near the MUGA pitch and close to Millburn Primary School.
In a statement following the discovery, Causeway Coast and Glens Borough Council said: “Council’s Estates team inspect all play parks on a schedule each week, higher footfall sites are inspected on a more regular basis.
“Millburn is inspected on a Monday and Friday/Saturday morning due to the high footfall. Millburn site was inspected and cleaned on Monday, broken glass was identified in the car park only, no glass was found in the play park.”
The statement went on: “On receipt of this media query, a member of the team was immediately dispatched to clean the park to prevent any potential injuries to children or adults. Council ask that members of the public report any incidents such as this by telephoning 028 7034 7171. If out of hours, please telephone Council’s emergency number 07850570763.”