Pumping stations

HSY’s operational area has over 500 wastewater pumping station, most of which are located underground and only around thirty of them are situated above ground. Most of the pumping stations in the Helsinki region were built in 1960s and 1970s, when the capital city was growing quickly. Almost all of the 30 pumping stations located above ground are from this era. The pumping stations in Espoo and Vantaa are smaller in size and most of them are located underground.

Currently, a few wastewater pumping stations are built every year. New pumping stations are needed, as the city grows and expands over to new areas. The aim is to build the new pumping stations underground, so that they are as unobtrusive as possible.

The pumping stations have an important role in the wastewater treatment in the Helsinki Metropolitan Area. Gravity is not enough to take the wastewater tens of kilometres to the wastewater treatment plants, which is why a pumping station is needed to pressurise the wastewater’s travel. The elevation level of the residential area in question also has a significant impact on the necessity of pumping stations.

The largest pumping stations are located in Suutarila and Pukinmäki. They are like small-scale plants. Thousands of cubic metres of wastewater travel through these stations from Vantaa and Northern Helsinki to Viikinmäki wastewater treatment plant.

The stations are situated near residential centres and in some cases they may cause an odour problem for their close surroundings. Some of the pumping stations have been equipped with deodorisation systems, implemented as biological filters. A few stations are using a new kind of chemical deodorisation system, which is based on activated carbon.

You can report any odour problems caused by the wastewater pumping stations through the HSY feedback form. Feedback from residents has an important role when we assess the construction and functionality of odour control systems.

Give us feedback​