Econet Group is a Finnish group of companies providing services in water and environmental technologies worldwide.

Econet Group Ltd is the holding company, which includes three subsidiaries engaged in operating activities: Econet Ltd, Dewaco Ltd and Oy Slamex Ab, offices and production plants of which are located in different parts of Finland.

Econet Ltd, located in Helsinki, provides design, project management and contracting of water and wastewater treatment plants on turn-key basis for municipal and industrial clients with decades of experience.

Dewaco Ltd, located in Laitila, provides complete sludge thickening, sludge dewatering and sludge removal systems with extensive experience. DEWA chain and flight sludge collectors and DEWA belt filter presses have been exported to more than 80 countries during the last 30 years.

Oy Slamex Ab, located in Lahti, designs and manufactures water and waste water treatment equipment and tanks under SLAMEX brand, and gas and water purification equipment under WISER brand.

In Sweden Econet Group has a partly owned company Econet Vatten och miljöteknik AB, which offers water and environmental services to the Swedish market.


Start-up: design, engineering and construction services for municipalities and industries in the water and environmental sector



Oy Slamex Ab

Acquisition of Oy Slamex Ab, the leading machinery supplier in the water sector in Finland

YIT Environment

Acquisition of YIT*s water and environmental business operations, established 1912



Siccotec Oy

Acquisition of Siccotec Oy, services for industrial wastewater treatment

Kone-Oskari Oy

Acquisition of Kone-Oskari Oy, services for maintenance & repair, spare parts



Econet Vatten och Miljöteknik

Stock trade, 30% of Landskrona Vatten och Miljöteknik, Sweden. Renamed as Econet Vatten och Miljöteknik

Dewaco Ltd

Stock trade, 70% of DWT Group Ltd (Dewaco Ltd) (100% in 2018)



HTM Stainless

Acquisition of HTM Stainless, high-quality stainless and acid proof steel manufacturing


Acquisition of Wiser business operations, patented technique for water treatment, gas and dust air treatment


Contact information

Malminkaari 5
FI-00700 Helsinki, Finland 
Phone: + 358 9 8366 250
E-mail: info(a)econetgroup.fi
Business ID: 2438595-3


Raviraitti 3
FI-23800 Laitila, Finland
Phone: +358 2 461 800
E-mail: info(a)dewaco.fi
Business ID: 2221862-5


Asentajankatu 4
FI-15520 Lahti, Finland
Phone: +358 9 343 6200
E-mail: slamex(a)slamex.fi
Business ID: 0114021-6

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