Water quality inspection points

In order to deliver safe tap water to customers, we conduct water quality tests at points necessary for water quality management. In addition to water quality inspections at faucets, water quality inspection points are also set up at water purification plants that make tap water and water sources that incorporate the raw water, and water quality inspections are regularly conducted.

If you want to know more about water quality inspection, go to the water supply in Yokohama (safe and secure water, tap water quality in Yokohama City).

If you want to know the frequency and items of water quality inspection, go to the water quality inspection plan.

If you want to know the results of the water quality test, go to the water quality test results.

Once a month for each system, such as water purification plants and corporate water receiving water, we conduct water quality tests such as water quality standard items at faucets such as 15 parks in the city. .
In addition, for water quality inspection items to be conducted at least once a day based on the Water Supply Law, multiple points are selected for each water distribution system, and inspections are conducted at 43 locations.

We conduct water quality tests for each process to confirm that the process management of water purification treatment is being carried out properly.

If you want to know more about water purification treatment, go to the treatment process at the water purification plant.

Since the water quality of the water source affects the water purification treatment, water quality tests are being conducted at the intake points of three water sources in Yokohama City (Doshi River system, Sagamiko system, Banyu River system) and upstream areas.

If you want to know more about the outline of the water source, go to the water source in Yokohama City.