- Yokohama-shi Top Page
- Yokohama City Q & A Frequently Asked Questions
- Search by the competent ward office
- Sewerage & Rivers Bureau
- Water Quality Division
- How clean is sewage treated water? Also, what kind of things do you analyze?
The text is from here.
Q
How clean is sewage treated water? Also, what kind of things do you analyze?
Last updated on April 1, 2024.
A
Of the typical pollutants contained in the inflow water, SS (suspended substances) 98%, BOD (biochemical oxygen demand) 98%, COD (chemical oxygen demand) 91%, T-N (nitrogen content) 68%, and T-P (phosphorus content) 70% have been removed at the Water Reclamation Center. In addition to the above, we analyze items that are regulated by law, such as heavy metals such as cadmium, lead, and chromium, cyan and phenol.
Inquiries to this page
Water Quality Section, Sewerage and Rivers Bureau Sewerage Facilities Department
Phone: 045-621-4343
Phone: 045-621-4343
Fax: 045-621-4256
E-Mail address [email protected]
Page ID: 211-646-113
