WasteServ said this afternoon that it was reviewing its drainage system at the Marsa incinerator after it got blocked by solid waste.
A private contractor unblocked the drain after a short while.
It appeared, Wasterv said, that solid waste got into the system during the regular washing of the plant, despite the grates which stop such material. The grates around the facility are being strengthened to avoid a repetition.
Wastserv apologised for the inconvenience caused.