Why is the district heating water green?
The water circulating in the district heating network is dyed green to help detect possible leaks and pipe and equipment failures more easily.
In Oulu, a water-soluble chemical called pyranine is used to colour the water. The chemical is harmless to humans and animals.
If the hot water coming from the tap is green, the heating substation that heats the property's domestic water has broken down, and district heating water has reached the domestic water supply. In such a situation, call the district heating fault services immediately, or if you live in a housing company, the property maintenance or the building manager. You shouldn't drink coloured water, but you can bathe in it.
The service life of a heating substation is approximately 20–25 years, after which replacement is recommended. By choosing our turnkey service, you can guarantee yourself an effortless heating substation change.
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