Results of water quality inspection

We confirm the safety of tap water quality by conducting water quality tests at inspection points established by Yokohama City.
The hydrant (faucet) publishes the results of water tests conducted every month, and the water purification plant publishes the results of water tests conducted in May, August, November and February.
For the measurement results of organic fluorine compounds, see the page on test results of organic fluorine compounds (PFAS) in tap water.