In Yokohama-shi, we perform integrated water quality management to reach feed cock from water source based on water security plan. Examination of water is essential that tap water adapts to standard of water and guarantees that we are safe and does the core in the water quality management of tap water. We set point and item, frequency of examination of water from water source to feed cock, policy about temporary examination of water to perform appropriate water quality management by examination of water plan.
Water supply company devises examination of water plan before start of fiscal year for fate of the water supply method more and is required to give information to customer in this.
2020 examination of water plan (PDF: 1,209KB)
Contents of examination of water plan
- Basic policy
- Summary of water supply business
- The quality of the water situation of Haramizu of water supply and Josui
- Inspection point and the reason
- Inspection item, inspection frequency and the reason
- Examination of water method
- Temporary examination of water
- Division of self-/trust of examination of water
- Public announcement of examination of water plan and test result
- Review of evaluation of test result and examination of water plan
- Precision and reliability guarantee of examination of water
- Cooperation with the person concerned
Inquiry about water supply to Water Works Bureau customer Service Center
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