Sewer networks
Smarter technology, less disruption.
Many municipalities across Europe trust us to manage and maintain their sewer networks. Used by our companies in several countries, our technology keeps assets running with minimal downtime.
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European group for essential services
Enabling Infrastructure Resilience.
We protect, maintain and improve the infrastructure and environments that keep society and industry running — with local proximity and specialist execution, backed by the capabilities and scale of an integrated European group.
65+Years of experience in essential services
50+Specialist companies
3,000+Employees
9Countries across Europe
50+companies, one operating platform
Who we are
Local trust. Specialist capabilities. European platform power.
KSG brings together more than 50 specialist companies. Each one stays close to its customers and markets. Together, they share technology, equipment, know-how and talent at European scale.
Our lines of business
Three lines of business. One integrated offer.
From inspection and cleaning to rehabilitation and prevention — the full lifecycle of essential infrastructure, delivered by local experts.
01 — LINE OF BUSINESS
Industrial
Keeping industrial operations and sewer networks clean, safe and compliant.
- Sewer cleaning
- Sewer inspection
- Industrial cleaning
- Liquid-waste treatment
02 — LINE OF BUSINESS
Infrastructure
Rehabilitating underground networks and keeping roads safe for everyone.
- Sewer rehabilitation
- Sewer construction
- Drainage renovation
- Road marking & signage
- Traffic control
03 — LINE OF BUSINESS
Environmental Health
Protecting people, sites and public health from pests and hazards.
- Pest control
- Disinfection
- Legionella control
- Water & air quality
- Wood preservation
- Bird & wildlife control
European reach
Nine countries, nine markets.
KSG is more than the sum of its local companies. Specialists, equipment and experience move across borders, so every customer benefits from the strength of the whole group.
- SwitzerlandMökah
- GermanyKSG Deutschland / THVM
- BelgiumMaxi Cleaning
- NetherlandsConservator
- EnglandDefluo
- ScotlandDamm
- SpainSASTI
- PortugalLuthisa
- ItalyNuova Topolin
Services and leading brands in our markets.
Switzerland
Scotland
Spain
Portugal
KSG at work
Across Europe, every day.
Our people keep networks, plants and public spaces working — in every one of our markets.
KSG in motion
See our teams at work.
Specialist vehicles, underground works and precision treatments — filmed on our job sites.
Why KSG
Why customers choose us.
Essential services cannot wait. Our customers rely on partners who deliver — locally, every day.
01
Mission-critical services
We keep networks, sites and public spaces safe, compliant and available — every day, and around the clock when it matters.
02
Local execution, group-wide strength
Local teams know their customers and regions. Behind them stand the group’s specialist capabilities, equipment and technology.
03
One integrated lifecycle offer
One partner from inspection and cleaning to rehabilitation and prevention — for recurring maintenance and better infrastructure decisions.
Did you know?
You might not see it. But we take care of it. It’s on us.
Drone inspections
Eyes where people can’t go.
Our drones inspect hundreds of assets every year, so no one has to work at height or in dangerous areas. Drone inspections are faster, safer and give customers precise images to plan maintenance.
Trenchless repair
Repairing pipes without digging.
Every year we renovate pipes from the inside, without opening up streets or walls. CCTV cameras locate the problem and we repair the pipe from within, with less disruption, less noise and lower costs.
Airports
Keeping the skies safer.
At Zurich, Madrid, Brussels and Cologne airports we protect flights, infrastructure and the environment: more than 1 million flights every year. Managing birds and wildlife around the runways reduces the risk of bird strikes and keeps airports safe and running.
Our fleet
2,000+ vehicles, ready to respond.
Every day, more than 2,000 KSG service vehicles are on the road across nine countries. A large local fleet means our teams are close to customers and can respond quickly.
KSG in numbers
European scale. Local presence.
Close to our customers in every market — with the resources of a whole group behind every job.
~130LocationsRegional hubs close to our customers
2,000+Service vehiclesA modern, specialist fleet
3Lines of businessIndustrial · Infrastructure · Environmental Health
9MarketsNine countries, nine markets
Get in touch
Looking for the right partner for your infrastructure?
Tell us what you need and where. We will connect you with the KSG company closest to you.
Group headquarters · Marktgasse 33, 8400 Winterthur, Switzerland