ARA Unteres Pustertal

Waste water treatment plant at Mühlbach

The sewage treatment plant was dimensioned and engineerized for a 55.000 inhabitants equivalent capacity, in the way to satisfy the needs of population in local areas, of tourism, of industry and artisan shipment, guarantying in the meanwhile higher levels in quality, with the maximum efficiency in organic pollutant load knocking down and phosphoric and nitrogen components strong reduction.
The target of sewage treatment is reached with physical, biological, chemical and biochemical processes.

The plant has a catchment area of 333km².

The plant is looked after all year round and around the clock by three trained clarification specialists.


Tour of the plant


Would you like to get a picture of our work for yourself?

Then we look forward to your visit, our employees will be happy to accompany you through the plant and show you,
how we treat your wastewater.

Please fill out this form and send it to us, we will contact you to make an appointment.

The guided tours are free of charge.

Contact Staff


Phone number attachment: 0472 849 772

Your contact persons at Mühlbach:



Direct number:

Paul Pichler Technical Manager; plant engineering 0472 8866 84
Huber Gerold Plant Manager; Process engineering; Measurement and control technology 0472 8866 85
Joachim Volgger Plant engineering 0472 8866 86
Heidi Mutschlechner Cleaning  



ARA Pustertal AG
wastewater treatment plant Unteres Pustertal
Pustertaler Straße 44
39037 Mühlbach

opening hours

Monday: 08:00-12:00, 13:00-17:30
Thuesday: 08:00-12:00, 13:00-17:30
Wednesday: 08:00-12:00, 13:00-17:30
Thursday: 08:00-12:00, 13:00-17:30
Friday: 08:00-12:00
Saturday: Closed
Sunday: Closed

standby service


The system is monitored around the clock by on-call service.
For emergencies outside our opening hours, please contact our on-call number: 342 515 8615 or 0472 84 97 23