I want to know about the renewal of aging water pipes

In fiscal 1969, Water Works Bureau began renewing old water pipes.
At present, aging pipes are being renewed using earthquake-resistant pipes (seismic pipes), and seismic resistance is being promoted at the same time as renewal.
There is a water distribution pipe of about 9,300 km in the city, and it takes decades to renew and make everything earthquake-resistant. Therefore, in addition to the material of the pipe, the year of laying, the degree of corrosion and the strength of the ground are comprehensively considered. We prioritize and prioritize.
For more information, please visit the official website.

Renewal of water distribution pipes and efforts to improve earthquake resistance