Mifune Town（御船町） has a 'disaster cooperation well' system. People can use these wells for daily water (toilet and cleaning use) when a large disaster cuts off the water supply. Right now, one privately owned well is registered in Takagi（高木）, Amagi district（甘木地区）. The well water is NOT for drinking. Users must follow the well owner's instructions.
What is a disaster cooperation well（災害時協力井戸）?
This system helps people get daily water (for toilets and cleaning, NOT for drinking) when a large disaster such as an earthquake or heavy rain cuts off the water supply for a long time.
When a disaster happens, registered wells are made available to local residents by the goodwill of the well owners. They are a valuable water source.
※ When you use water from a well during a disaster, you must always follow the instructions and warnings of the well owner (or manager).
Disaster cooperation well（災害時協力井戸） registration status ▶ Businesses: 0
Takagi（高木）, Amagi district（甘木地区）: 1 well
※ The home address of privately owned wells is not published.
Notes for using a disaster cooperation well（災害時協力井戸）: You can only use these wells when a large disaster, such as an earthquake, has cut off the water supply. The well owner provides water by their own goodwill.
When you use well water, please keep the following points in mind.
You cannot use these wells during normal times when the regular water supply is working.
1. You can use a disaster cooperation well（災害時協力井戸） when a large disaster such as an earthquake has happened AND the well itself has no damage (for example, the water is not cloudy).
2. Follow the well owner's (or manager's) instructions about when and how to use the well.
3. Do not stay at the well for a long time. Be considerate of other users and avoid arguments.
4. Disaster cooperation well（災害時協力井戸） water is NOT for drinking. Use it only as daily water for cleaning and toilets.
5. The well owner (or manager) may limit or stop the water supply depending on the situation.
6. If you or your belongings are harmed while using the well water, you cannot hold the well owner responsible.
7. The amount of water from a well is limited. Large amounts cannot be provided.
8. Users must bring their own containers to collect the well water.
9. Well water is provided by the owner's goodwill. Please do not behave in a way that causes trouble for the owner or for other people nearby.
About registering a disaster cooperation well（災害時協力井戸）: Mifune Town（御船町） is always looking for well owners — individuals or businesses — who are willing to provide daily water to local residents during a disaster.
Please check the requirements below and consider registering.
Registration requirements: 1. The well must be located within the town.
2. It must actually be used as a well.
3. There must be an electric or hand-operated pump, or a bucket and rope, to draw water from the well.
4. The well must have a well surround and be safe to use.
5. The well owner or manager must maintain the well properly so that daily water can be provided smoothly to town residents during a disaster.
6. A water quality test set by the town must be carried out.
The water quality test items are listed below.
【Water quality test items required for disaster cooperation well（災害時協力井戸） registration】
The number of colonies formed from 1 ml of test water must be 100 or fewer.
Must be 0.04 mg/L or less.
Nitrate nitrogen and nitrite nitrogen（硝酸態窒素及び亜硝酸態窒素）
Must be 200 mg/L or less.
(Total organic carbon (TOC) level)
Must be between 5.8 and 8.6.
Must be 5 degrees or less.
Must be 2 degrees or less.
※ If your well is registered, there is a system that partly covers the cost of the water quality test.
7. You must be able to provide well water free of charge during a disaster.
8. There must be nothing around the well that could pollute the water.
9. You must be willing to have the well's location and the owner's or manager's name made public.
How to register: 1. If you or your business would like to cooperate, submit the 'Mifune Town Disaster Cooperation Well Registration Application（御船町災害時協力井戸登録申請書）' and a copy of your water quality test results to the Environmental Sanitation Section, Environmental Conservation Division（町環境保全課環境衛生係）.
※ Before completing the registration process, please make sure you have checked all the registration requirements listed above.
2. A town staff member will visit the well location at a later date to check it in person and take photos.
3. If the inspection confirms that everything is in order, a 'Mifune Town Disaster Cooperation Well Registration Decision Notice（御船町災害時協力井戸登録決定通知書）' and a registration sign will be issued to you.
Please display the registration sign and be prepared for a disaster.
Application forms are available here ▶ Mifune Town Disaster Cooperation Well Registration Application Form (Form No. 1)（御船町災害時協力井戸登録申請書(様式第1号)） (Word: 17.9 KB)
※ If anything about your well changes, or if you want to cancel the registration, you also need to complete a procedure.
Please submit notification using the forms below.
〇 Mifune Town Disaster Cooperation Well Registration Change Notification（御船町災害時協力井戸登録内容変更届出書(様式第3号)） (Word: 15.7 KB)
〇 Mifune Town Disaster Cooperation Well Registration Cancellation Application（御船町災害時協力井戸登録取消し申請書(様式第5号)） (Word: 15.7 KB)
Procedure for applying for a water quality test cost subsidy（水質検査費用の補助手続き）
The town will partly cover the cost of the water quality test for registered disaster cooperation wells（災害時協力井戸）.
The subsidy is up to 10,000 yen per well, and can be claimed once only. Please follow the steps below to apply.
1. Submit the 'Mifune Town Disaster Cooperation Well Support Project Subsidy Application and Claim Form（御船町災害時協力井戸支援事業補助金交付申請書兼請求書）' at the counter of the Environmental Sanitation Section, Environmental Conservation Division（町環境保全課環境衛生係）.
※ You must attach a copy of the receipt showing the test fee you paid.
2. The town will review your application and decide whether to grant the subsidy. You will be notified by a 'Mifune Town Disaster Cooperation Well Support Project Subsidy Grant (or Non-grant) Decision Notice（御船町災害時協力井戸支援事業補助金交付（不交付）決定通知書）'.
If the subsidy is approved, the money will be transferred to the bank account you wrote on the application and claim form.
Application forms are available here ▶ Mifune Town Disaster Cooperation Well Support Project Subsidy Application and Claim Form (Form No. 1)（御船町災害時協力井戸支援事業補助金交付申請書兼請求書(様式第1号)） (Word: 18.1 KB)
★ For full details about the system and the procedures, please see: Mifune Town Disaster Cooperation Well Guide（御船町災害時協力井戸の手引き） (PDF: 279.4 KB)
Date 2026-07-15 · Last confirmed 2026-08-07 11:50 JST · Translated at 2026-07-31 11:48 JST