ÖNACE 37: Sewerage
Section: Water supply; sewerage, waste management and remediation activities. Assignment by Statistics Austria under ÖNACE 2025, not from the register.
Statistics Austria assigns 151 active companies in the register to ÖNACE division 37: Sewerage (as of 5 Nov 2026).
56 of them have a company page on firmenbuchdaten.at. The shares below refer to these 56.
Most have their seat in: Upper Austria 20 %, Tyrol 18 %, Lower Austria 16 %.
Most common legal forms: GmbH 91 %, KG 7 %, eGen 2 %.
Places with the most companies: Wien (8), Graz (5), Innsbruck (3), Kitzbühel (2), Leonding (2).
53 have filed annual accounts with a size class, 3 of them as medium-sized or large.
Sewerage: companies, larger first
- ebswien kläranlage & tierservice Ges.m.b.H.FN 111306k · Wien · Large (G)
- ROEHSLER-TEC Service GmbHFN 419408b · Leopoldsdorf · Medium (M)
- DAWI Kanalservice GmbHFN 310039s · Innsbruck · Medium (M)
- HF Rohrtechnik GmbHFN 162479s · Linz · Small (K)
- RRD Rohrreinigungsdienst GmbHFN 320461t · Eberstalzell · Small (K)
- Franz Hartmann GmbH.FN 137568g · Ludesch · Small (K)
- Abwasserbeseitigung Unteres Gailtal Errichtungs- und Betriebs-GmbHFN 146031b · Nötsch im Gailtal · Small (K)
- ARAB-Abwasserreinigungsanlagen Betreiber GmbHFN 168495m · Kirchbichl · Small (K)
- Rotreat Abwasserreinigung GmbHFN 180885h · Graz · Small (K)
- Entsorgung und Kanalreinigung Permetinger GmbH & Co KGFN 239190a · Kitzbühel · Small (K)
- Mayr Entsorgungs- und Transport GmbHFN 267090f · Wartberg an der Krems · Small (K)
- Trumau-Schönau Umwelt GmbHFN 285443w · Trumau · Small (K)
- Kalcher Kanaltechnik GmbHFN 289353w · Krottendorf-Gaisfeld · Small (K)
- ITS Kanal Services GmbHFN 291447z · Thaur · Small (K)
- Franz Sturmbauer GmbHFN 334120d · Leonding · Small (K)
- aqendo Österreich GmbHFN 352532f · Wien · Small (K)
- Rohr Zauber GmbHFN 402852f · Wien · Small (K)
- Blubb Kanal & Abwassertechnik GmbHFN 509277m · Wilhelmsburg · Small (K)
- Aichinger Kanalservice GmbHFN 610539b · Redlham · Small (K)
- Herbst Entsorgungsgesellschaft m.b.H.FN 70364b · Rohr bei Hartberg · Small (K)
- SanServ GmbHFN 82055w · Leonding · Small (K)
- Wiental-Sammelkanal Gesellschaft m.b.H.FN 84358g · Purkersdorf · Small (K)
- Haunschmid Kanalservice Gesellschaft m.b.H.FN 89815g · Katsdorf · Small (K)
- Arnoldstein Kanalisationserrichtungs- und Betriebsgesellschaft m.b.H.FN 93214f · Arnoldstein · Small (K)
Datenquelle: Statistik Austria - data.statistik.gv.at (Statistics Austria), register number to ÖNACE assignment, CC BY 4.0, as of 5 Nov 2026. Source: Austrian company register (Firmenbuch), Republic of Austria, represented by the BMJ, open data under CC BY 4.0.