The infrastructure ministry has announced a nationwide survey of aging sewer pipe systems ... to evaluate the condition of the pipes. Priority will be given to 1,000 km of pipes that are prone ...

Following the road collapse in Yashio, Saitama Prefecture, a nationwide emergency inspection of sewer pipes discovered corrosion and other abnormalities in three locations in the prefecture.

While Hokkaido is not subject to the emergency inspections requested by the Ministry of Land, Infrastructure, Transport and Tourism, the total length of sewer pipes installed in the country's ...