List of designated water supply equipment construction companies

With designated water supply equipment construction company, designation system of designated water supply equipment construction company was established by water supply law revision of 1996, and, based on uniform requirements nationwide, based on application of person performing business of water supply equipment construction It is person whom water supply company (Water Works Bureau) appointed as construction company.
Designated water supply equipment construction companies are designated for each water supply company (Water Works Bureau), but the designated standards are not stipulated by the water supply company (Water Works Bureau), but are designated by the Water Supply Law as a uniform requirement nationwide. Standards are set. The designated criteria are "location of persons who will be appointed as chief engineer for water supply equipment construction at each business site", "holding of machinery and equipment specified in the Water Supply Law Enforcement Regulations (machine and equipment for cutting pipes and pipes for processing machinery and equipment for processing. Mechanical equipment for joining, water pressure test pump) ", "Be a person who does not meet certain disqualification requirements".
When a person who has applied for designation conforms to the designated standards stipulated in the Water Supply Law, the water supply company (Water Works Bureau) must designate it.
When we perform water supply construction (except minor change) such as new construction, remodeling, removal of water supply equipment in Yokohama-shi, based on rule of "water supply law", "Yokohama-shi water supply regulations", Yokohama-shi designation water supply equipment construction company Application and construction by is necessary.
※Minor changes do not involve plumbing work, and refer to the replacement and repair of single faucets and the replacement of parts of water supply equipment installed at the end of water supply equipment such as tops and packings.

The water supply equipment is a private property, and the contract for water supply construction is to be made between the owner or user and the designated water supply equipment construction company. Water Works Bureau cannot intervene in the contract.
When making a request, carefully check the following contents and make a request (contract) after consent.

1. Please explain the contents of the desired construction and the local situation to the waterworks shop enough.
2. Please receive sufficient explanation in advance about the details of the construction, the required time, the estimated amount, etc.
3. If possible, get quotes from multiple people and consider the contents. Please check in advance as estimates may be charged.
4. If you are not satisfied with the billing amount, ask for a breakdown of the billing amount and confirm any questions.
5. If you have any questions during construction, please check with the construction company on the spot.
6. If you make an emergency request on a holiday or nighttime, the fee may be higher than usual, so please check in advance.

Designated water supply equipment construction company

Excel (all businesses) (Excel: 197KB)

PDF (PDF: 321KB) (business in Yokohama-shi) / PDF (PDF: 342KB) (business outside Yokohama)

　As of October 15, 2024
・Information is posted for each location of the construction company.
・It is updated on the first business day of the following month with the closing of the 15th of each month (or the next business day if it is a holiday).