Welcome to find support for water protection!

Welcome to finding information, examples and practical tips for water protection!

Tools for water protection is a web-based toolbox providing support for implementing water protection actions at local level. It is designed for professionals and experts who do concrete work, strategic planning or make decisions on water protection in cities, municipalities, companies, NGOs or other organisations. The Toolbox provides information and tools that assist with water protection. In addition to practical tips, tools and background information, in the Bank of Actions you can browse actions that local organisations have already implemented for the protection of local waters and the Baltic Sea – and you can also share your organisation’s own actions! This site was established in 2015 by the EU Life+ funded project CITYWATER, in collaboration with the Baltic Sea Challenge. The first tools are based on the results of the CITYWATER project. The site is now managed and updated by the Baltic Sea Challenge. More tools and actions are needed – please contact us and tell us about your ideas! Read more on page About us!

The Baltic Sea Challenge

Action at the local level is the key! Join the network and find ideas, examples, best practices and possibilities for collaboration.

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Communication strategy

Find tips and guidelines on how to communicate the benefits of water protection efficiently to get your message through!

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Cost-benefit analysis

Learn how the benefits of water protection can be assessed and compared to the costs of implementation!

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Storm water solutions

Considering implementing sustainable storm water solutions? Read about solutions, tips and recommendations for practical work!

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Find inspiration and ideas in water protection actions implemented by the Baltic Sea Challenge network.
Browse the Bank of Actions!


Awareness raising

Hazardous materials

Littering etc.

Oil spill prevention

Research and monitoring

Shipping and boating

Stormwater management

Strategies and programs

Wastewater management


Drainage basin

Reducing the risk of oil spill of substations

Actor: Turku Energia Ltd   ●   Year: 2011   ●   Address: Linnankatu 65, Turku, Finland

Turku Energy company examined company’s substations near Turku waters and reduced their oil spill risks.


According to the examination 4-5 substations were chosen. In order to reduce the risk of oil spill in the substations the protection of the catchment pools of transformers was improved. The distribution transformers’ risk of oil spill has been reduced in locations where there are sources of drinking water less than 50 meters away.


Distribution transformers cause an environmental risk because when damaged, they can leak transformer oil to the ground and further to the water systems and contaminate them. Oil can leak to the ground in consequence of a sudden defect or a long-time leakage. The long-time oil leaks of the distribution transformers refer to the kind of leaks that are caused without sudden fault situations. The leaks can be caused by a construction defect or aging of the parts. The sudden defects can be either internal faults or external damages of the transformer. The internal faults of the transformer refer to the failure of the inner insulator and arcs caused by this. The oil leaks are caused when the arcs pierce holes to the container of the transformer or lead to the explosion of the transformer.

Damaged transformers occur rarely but in the terrain there are a lot of pillar transformers without protection, causing the risk of polluting the water systems. When transformer oil gets to the water system it is very difficult to remove. Special attention must be paid to the location of the transformers in areas of waterworks producing household water from surface waters.

Background information

The actions are part of the environmental programme of Turku Energia and the implementation of the programme is reported in the annual report of the company.

Further information

Name: Minna Niemelä   ●  Email: minna.niemela (a) turkuenergia.fi   ●  Web page: http://www.turkuenergia.fi/