Tenders/Maintenance Work of Mid-West District Simple Water Supply Main Improvement (Section 5) (7th Extension)
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Maintenance Work of Mid-West District Simple Water Supply Main Improvement (Section 5) (7th Extension)

Auto-translated from Japanese
Original title: 中西部地区簡易水道基幹改良工事(5工区)(7繰)
長崎県対馬市
Published: Sep 3, 2026
Updated: Sep 7, 2026
Source: jp_kkj

About This Opportunity

This is a works contract in the construction and civil works, architecture and engineering and water and sanitation sectors, with a focus on Groundwater. Located in Japan, Asia, this opportunity is open to firms and consortiums.

Published through 官公需 (kkj.go.jp), a national government procurement portal. Public procurement tenders follow the country's national bidding regulations and may have specific eligibility and documentation requirements for civil works in the construction and civil works sector. Works contracts of this nature generally require demonstrated experience in similar infrastructure projects, adequate equipment and technical personnel, and financial capacity including bank guarantees. Interested parties should review the full documentation on the original source before submitting their proposal.

Description

Auto-translated from Japanese
- Other persons who have not violated laws, regulations, etc., such as the Construction Industry Act. Construction Industry Permit Must have a specific or general construction industry permit for water supply facility construction. Grading Level or Overall Score from Bid Participation Qualification Review Must have a grading level of A for Water Supply Facility Construction in the Reiwa 8 [Year] Construction Work Bid Participation Qualification Grading Decision Notice. Main Office or Branch, etc. Must have a head office or branch, etc. in the city area as defined by Article 3, Paragraph 1 of the Construction Industry Act (limited to those who have been delegated authority). However, for branches, etc., they must have been established for 10 consecutive years or more as of January 1, Reiwa 8 [Year], employ 10 or more employees who meet both of the following conditions, and have been certified as quasi-city contractors for the branch, etc. in Reiwa 8 [Year]. ① Must have resided in the city for 6 months or more as of the review target date and be actually residing there. ② Must have been regularly employed for 6 months or more as of the review target date. However, for civil engineering construction, among the employees meeting ① and ② above, there must be 5 or more full-time engineers (civil engineering construction) who satisfy both Article 15, Item 2 (a) and Article 26, Paragraph 4 of the Construction Industry Act. - Must not have a significantly unsound financial condition, such as issuing dishonored bills or checks and having bank current account transactions suspended. - Must not be under suspension of designation by this city from the announcement date to the contract date (date of resolution by the city council for matters requiring council resolution). (※For matters requiring council resolution, if suspension of designation by this city occurs between the conclusion of the provisional contract and the date of resolution, the provisional contract will be canceled and the main contract will not be concluded.) Qualifications - Must not fall under the provisions of Article 167-4 of the Local Autonomy Act (Cabinet Order No. 16 of 1947). - Must be listed in the Reiwa 8 [Year] Tsushima City Competitive Bidding Participant List. - Must not have filed for commencement of rehabilitation or reconstruction proceedings under the Corporate Rehabilitation Act or the Civil Reconstruction Act (excluding those who have received re-certification of competitive bidding qualifications or approval of a reconstruction plan). Minimum Reserve Price Bid Participation Conditions Must meet all of the following conditions. Low Bid Price Investigation Standard Price - Judgment Price Not set Council Resolution Not required *For details, refer to the design drawings and specifications (hereinafter referred to as "design documents", etc.). Construction of Slow Sand Filter Tank (RC structure 2.0m x 6.3m) 2 tanks Construction of Receiving Well (RC structure 1.0m x 1.3m x 1.0m) 1 tank Construction Overview Construction Period: Until March 25, Reiwa 9 [Year] Work Name: Maintenance Work of Mid-West District Simple Water Supply Main Improvement (Section 5) (7th Extension) Work Location: Kashi, Mitsushima-cho, Tsushima City We hereby announce as follows. Naoki Hidakatsu, Mayor of Tsushima City BID ANNOUNCEMENT September 3, Reiwa 8 [Year] We will conduct a conditional public invitation to bid, in accordance with the provisions of Article 3 of the Tsushima City Contract Regulations (Regulations No. 108 of 2004). 1 2 3 4 5 6 When participating in the bid, be sure to download the design drawing data for viewing. ① ② Tsushima City General Affairs Department, Finance Division Contracting Department: 1441 Kokubu, Gen'ei-cho, Tsushima City 0920-53-6203 Contract Deposit: Required Work Department: 1441 Kokubu, Gen'ei-cho, Tsushima City Tsushima City Waterworks Bureau, Water Division 0920-52-0943 Other Notes: Compliance with the Act on the Recycling of Construction Materials, etc. (Law No. 104 of 2000). Be sure to refer to the bid explanation document when applying and bidding. Bid Bond: Exempted Bid Cancellation: Bids will be canceled if doubts arise about the fairness of the bidding due to the actions of bidders, etc. Invalid Bids: Bids falling under any of the clauses of Article 11 of the Tsushima City Contract Regulations, Article 6 of the Tsushima City Construction Cost Breakdown Handling Manual, bids from persons who do not meet the bid participation conditions specified in this bid announcement, bids from persons who have made false statements in their application documents, and bids that violate the bidding conditions will be deemed invalid. Notification of Bid Participation Qualification Review Results: Will be notified by Friday, September 18, Reiwa 8 [Year]. Bid Date, etc. [Bid Date and Time]: Tuesday, October 13, Reiwa 8 [Year], 10:00 AM. [Bid Location]: Large Conference Room, 2nd Floor, Annex Building, Tsushima City Hall. [Viewing of Response Documents]: Answers will be provided for each question and will be available for viewing on the Tsushima City website until the bid date. Submission of Bid Participation Qualification Review Application Form [Submission Period]: Until Friday, September 11, Reiwa 8 [Year] (excluding closing days). [Submission Destination]: Tsushima City General Affairs Department, Finance Division, Tsushima City Hall. [Submission Method]: Submit by hand or mail. Acquisition of Design Drawings for Viewing [Period]: From the announcement date until Friday, September 25, Reiwa 8 [Year] (excluding closing days). [Location]: City Website → Municipal Information → Bids and Contracts → Bid Information → Conditional Public Invitation to Bid Questions Regarding Design Drawings, etc. [Question Submission Period]: From the announcement date until Friday, September 25, Reiwa 8 [Year] (excluding closing days). [Question Submission Destination]: Work Department listed below. Scheduled Engineers: Within 3 per construction project. Bid Explanation Document Distribution: Available for download from the Tsushima City website (https://www.city.tsushima.nagasaki.jp). Company Construction Experience: Not required Bid Participation Conditions Other: None Qualifications of Scheduled Engineers, etc. Must be able to assign a chief engineer or supervising engineer to this construction site who has a direct and continuous employment relationship with the bidder, as stipulated by the Construction Industry Act (Law No. 100 of 1949). The engineer must have a direct and continuous employment relationship with the bidder as of the submission deadline for the application. However, in cases of re-employment of engineers due to the contractor's circumstances (e.g., bankruptcy), a "Declaration of Exemption for Continuous Employment Relationship" must be submitted. The supervising engineer must possess a Supervising Engineer's License and a certificate of completion of supervising engineer training. If a registered core engineer is to serve as the chief engineer, they must possess a certificate of completion of the registered core engineer training. As of the bid date, they must not be exclusively assigned to other construction projects as a supervising (chief) engineer, site manager, etc. It is permitted for the scheduled engineer for this work to be the scheduled engineer for other general competitive bid applications, but if this work is won, the bidder must immediately withdraw from other bids. However, this does not apply to cases where exclusivity is not required by Article 26, Paragraph 3 of the Construction Industry Act.

Data provenance

This notice is sourced from 官公需 (kkj.go.jp) and was originally published on September 3, 2026. Last refreshed 13 days ago. Original language: Japanese. BidsFactory mirrors official procurement notices and links back to the source for full legal text.

About 長崎県対馬市

長崎県対馬市 has issued 28 procurement notices on BidsFactory, including 5 currently open and 0 awarded contracts. Activity concentrates in Construction & Civil Works, Architecture & Engineering Services, and Water & Sanitation. All notices are published for Japan. Notices are distributed via 官公需 (kkj.go.jp). Most recent publication: September 17, 2026.

Frequently asked questions about this tender

How can I submit a bid?

Visit 官公需 (kkj.go.jp) to access the full notice, required documents, and submission instructions provided by the contracting authority.

Who is the contracting authority?

This notice was issued by 長崎県対馬市 in Japan. The authority is responsible for evaluating bids, awarding the contract, and managing performance.

What type of contract is this?

This is a Works contract in the Construction & Civil Works sector. The classification helps bidders match the opportunity to their qualifications and registered scope of supply.

Where will the contract be performed?

The contract is for delivery in Japan. Foreign bidders should review local registration, taxation, and any in-country presence requirements before submitting.

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Key Details

Contract Type
Works
Eligibility
Firms / Consortiums
Language
Japanese

Source

jp_kkj
jp_kkj
Official Source

Contracting Authority

長崎県対馬市
🇯🇵Japan

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