The city of Kashiwa, Chiba Prefecture, said Wednesday that no alarming levels of toxic cyanogen compounds have been found in water from seven wells at a local Itoham Foods Inc. factory amid embarrassing reports that the plant is within walking distance of a wartime chemical weapons training facility.

Citing the results of tests the city conducted on the wells in and around the plant Monday, Kashiwa officials said the levels of the compounds from the wells clear safety standards.

The Hyogo-based major ham and sausage maker, which has voluntarily recalled more than 3.3 million packages of 26 products made for itself and other companies, closed its Kashiwa factory for inspections Wednesday after unsafe levels of toxins were detected in well water it uses to make ham, sausage, pizzas and other food products.