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Bedrock Groundwater Surveys

Bedrock groundwater surveys enable the supply of high-quality groundwater in areas without a usable sediment groundwater source. Groundwater from the bedrock can be used to supplement water from other sources.

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Researcher pours water sample from a groundwater pipe into a sample bottle held by colleague, surrounded by trees and sunlight.

Key benefits

Drilled wells in optimal locations

The survey can indicate the optimal locations for wells, which will reduce the number of expensive drilled wells with a poor yield.

Verified water quality

Our experts investigate the water quality and isotopic composition in detail and assess the source of the water in drilled wells to ensure that the water in the wells will not become contaminated and the quality will remain good.

Unique services in Finland

GTK is the only operator in Finland that offers comprehensive services from initial geophysical surveys to the modelling of different scenarios.

Clean drinking water from bedrock

Bedrock groundwater surveys are multidisciplinary research. In the surveys offered by GTK, locations suitable for drilled wells are surveyed using geophysical methods and the yield of the wells, the water quality and transport routes are investigated using methods such as chemical and isotope studies. Depending on the customer’s needs, the effects of water abstraction on the aquifer or the migration of contaminants to the drilled wells is also modelled.

The bedrock is a source of high-quality water for areas where groundwater is not available in the soil.

Yield of drilled wells in bedrock can be improved

Bedrock groundwater is commonly used for the water supply of individual households, but it can also be used to solve water supply problems in larger communities. High-quality groundwater aquifers are too far away from some areas, and transporting water from them is not economically viable. Determining the location of drilled bedrock wells and well fields using new methods reduces the number of wells with poor yield and decreases the costs arising from wells.