
Complete solutions in wastewater technology: filterless separators, oval tank systems and wash water treatment.

INOWA Abwassertechnologie GmbH
Marchtrenk (AT) · St. Valentin (AT) · Korschenbroich (DE) · Menziken (CH)New on Amplifa
About INOWA
INOWA Abwassertechnologie GmbH was founded in 1992 in Marchtrenk (Upper Austria) and has established itself as a specialist in wastewater technology. The company develops and manufactures maintenance-free, filterless oil separators, oval tank systems, fully biological wash water treatment plants and fully automatic wash water filtration systems. The portfolio is complemented by warning and monitoring systems for separators with oil layer thickness measurement, level and inlet valve monitoring. The tank systems are made of concrete with concrete covers, and the interior lining is made of PEHD (high-density polyethylene). INOWA sees itself not as a supplier of mass-produced goods, but as a partner for individual solutions tailored to customer requirements – from research and development to consulting, planning and project management through to sales, delivery and customer service. Thousands of separator systems and numerous wash water treatment plants have been installed in Austria, Europe and worldwide, including for airports, the automotive industry, mineral oil trading and car wash operations. In addition to its headquarters with production in Marchtrenk, the company includes a concrete tank production facility in St. Valentin, a service branch in Korschenbroich (Germany) and a representative office in Switzerland.
- Site
- Marchtrenk
- Processes
- Maintenance-free filterless oil separator technology (separators), Oval tank systems, Fully biological wash water treatment, Wash water filtration systems (fully automatic), Warning and monitoring systems for separators (oil layer thickness measurement, level monitoring), Concrete cover production, Consulting, Planning
- Materials
- Concrete, PEHD (high-density polyethylene)
- Founded
- 1992
- Industries
- Airports, Automotive, Industry, Mineral oil trading, Car wash operations, Infrastructure
- 01
Consulting and individual system design
- 02
Planning and project management
- 03
Manufacturing (concrete tank production, PEHD lining)
- 04
Sales and delivery
- 05
Installation and customer service
Materials & Processes
Concrete
Material used for the tank systems and the in-house produced concrete covers of the separator and tank systems.
PEHD (high-density polyethylene)
Material used for the interior lining of tanks and separators.
Sites

Marchtrenk
ATHeadquarters: administration, sales and production (since founding in 1992)
- Materials
- Concrete, PEHD
St. Valentin
ATConcrete tank production (since 2004)
- Materials
- Concrete
Korschenbroich
DEService branch NRW (Enzian separator service)
Menziken
CHRepresentative office (CONCEPT car care products)
Products & Systems





Inside the production






Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Maintenance-free filterless oil separator technology (separators)Engineering | – | – | – | – | Concrete (concrete covers), PEHD (interior lining) |
| Oval tank systemsEngineering | – | – | – | – | Concrete |
| Fully biological wash water treatmentEngineering | – | – | – | – | – |
| Wash water filtration systems (fully automatic)Engineering | – | – | – | – | – |
| Warning and monitoring systems for separators (oil layer thickness measurement, level monitoring)Engineering | – | – | – | – | – |
| Concrete cover productionGuss | – | – | – | – | Concrete |
Additional services
Reference customers
History
- 1992
Company founded in Marchtrenk; site for administration, sales and production.
- 2004
Start of concrete tank production at the St. Valentin site.