Operon as a company

We want to be a leading Water and Sludge Treatment Solution provider and Service Company. We offer advanced Technologies for our Clients and ensure the cost effectiveness and environmental sustainability.

Operon today

Operon’s current Net Sales is about 15 MEUR. We have 45 water and sludge experts in our organization.

Water Treatment -business is responsible for operation of 11 water and waste water plants in Finland. Annually treated water amount reaches to 6,5 million cubic meters and the nutrient load corresponds to 250 000 citizens.

Sludge Treatment -business operates in 7 different sites. Annually processed material amounts to 1 000 000 metric tons of sludge products. The amount equals to 120 000 metric tons of untreated sludge from waste water treatment plant

Contracting and Technologies -business is delivering annually projects which value totals to 5-7 MEUR. Scope of the projects vary from individual equipment to entire plant turn-key deliveries. Operon has on top of comprehensive partner network it’s own equipment manufacturing at the works located in Ilmajoki.

Operon in numbers:


Water treatment professionals 11


Water and waste water plants in operation

6,57 M

Cubic meters treated water at Operon plants

250 900

Summerized PE at Operon plants (PE= People Equivalent )


Project in delivery phase Total value: 7,0 M€


Equipment delivered last year, Total value: 1,5 M€


Sludge Treatment locations

120 000

Metric tons of treated sludge

Operon Group Oy

Operon Finland brings dozens of years of operative expertise of water treatment facility operations to Operon.

The operation and maintenance of waterworks and the management of water treatment facilities are Operon Finland’s key areas of expertise.

Operon Finland joined into Operon Group at the time of its founding, in 2019.

Suomen Ekolannoite has offered services in sewage sludge disinfection and production of soil conditioners since 2011.

Suomen Ekolannoite brings to Operon its long experience and solid expertise in the treatment of sewage sludge and circular economy solutions.

Suomen Ekolannoite joined into Operon Group at the time of its founding, in 2019.

Operon International (former Aquazone), established in 2009, specializes in the treatment of wastewaters and the boosting the wastewater processes.

Operon International’s expertise equip Operon with a solid ground for international technological deliveries for the needs of public and private water treatment plants.

Operon International (former Aquazone) joined into Operon Group at the time of its founding, in 2019.

Solid Water is a 2011-founded manufacturer of water treatment equipment and contracting services in water resources management.

With its comprehensive workshop, design and assembly services, Solid Water offers Operon solid expertise in Finnish contracting services and equipment deliveries tailored for the needs of water treatment plants.

Solid Water joined into Operon Group in the beginning of 2023.

Make yourself familiar with Solid Water equipment offerings at https://www.solidwater.fi/en/

Our ways of working is based on strong partnerships, in which we build environmental friendly technologies and cost efficiency to water and wastewater treatment.