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

Plans for Häppilännotko wetland

Actor: City of Turku   ●   Year: 2015   ●   Address: Hirvensalo Island, Turku

City of Turku conducted a plan for storm water wetland to be implemented in future simultaneously to the construction of infrastructure in the new residential area. © City of Turku


Lake Illoistenjärvi is situated in the centre of Hirvensalo Island near centre of Turku. The lake is small and suffers from eutrophication. The land use in the catchment area is ongoing big changes as the fields and forest are turned in to residential areas. This increases the amount of storm water being formed in the area. It also increases the amount of sediments, nutrients and harmful substances ending up in the lake, especially during the construction phase.

Building a wetland into the Peippolanoja ditch leading to the lake helps to keep the lake’s water quality from declining. Plans for the wetland were drawn 2015. According to the current plans the wetland will be implemented simultaneously to the construction of infrastructure in the area.


The wetland will clean storm water before it reaches eutropficated Lake Illoistenjärvi. Vegetation in wetland binds nutrient from the water. It will also slow the flow of the water in the ditch which will detain sediments particles from the water. Water from the Lake Illoistenjärvi runs into the Baltic Sea so the measures taken at the lake will also improve the quality of the water discharging to the sea.

Background information

All measures are voluntary and aim at improving the state of Lake Illoistenjärvi and the Baltic Sea. The plans were made as a part of CITYWATER project.

Further information

Name: Olli-Pekka Mäki, Director of Environmental Protect   ●  Email: olli-pekka.maki ( at ) turku.fi   ●