
Plastics technology, tank construction and pipeline construction for drinking water, wastewater and lake energy
Alois Bader AG
6376 Emmetten (production hall) · 6377 Seelisberg (postal address)New on Amplifa
About Alois Bader AG
Alois Bader AG is an owner-managed family business from Central Switzerland, based in Emmetten (Canton of Uri), specialising in plastics technology, drinking water tanks and demanding pipeline construction. In tank construction, the company produces drinking water reservoirs, wastewater tanks, well chambers, spring shafts, valve and pump shafts made of HDPE with capacities up to 100 m³, interior diameters up to 3000 mm and lengths up to 23.2 m. Production includes CAD design, project-specific CAD/CNC programming, CNC machining and plastic welding of HDPE, PP and PVC, including butt welding and electrofusion sockets. In pipeline construction, the company installs PE pipes in the large-diameter range (Ø 110–560 mm), ductile cast iron pipes and PE ventilation pipes, including installation at difficult-to-access locations. Customers include water utilities, wastewater associations, energy providers (lake energy), municipalities and the public sector, particularly in Uri, Nidwalden, Lucerne, Bern, Valais, Thurgau and Schwyz. The company has been SQS-ISO 9001 certified since 2003 and is certified for drinking water tanks in accordance with SVGW.
- Site
- Emmetten
- Processes
- Plastic welding (HDPE, PP, PVC), Butt welding, Electrofusion sockets, Tank construction (drinking water reservoirs, wastewater tanks, pump shafts, valve shafts) in PE,, Pipeline construction, plastic pipes (PE, incl. large-diameter pipeline construction Ø 110–560 mm), Pipeline construction, cast iron pipes (ductile cast iron pipes Ø 500–600 mm), CNC machining / CNC milling, CAD design / project-specific CAD/CNC programming
- Materials
- HDPE (high-density polyethylene), PP (polypropylene), PVC, PE (polyethylene, pipe material), Ductile cast iron pipes, V4A stainless steel, WPC (decking boards), High-density polyethylene (PE)
- Certificates
- ISO 9001:2015, SVGW certification (drinking water tanks), ISO 9001:2015 (SQS), SVGW certification for drinking water tanks
- Founded
- 1942
- Industries
- Drinking water supply, Wastewater/municipal water management, Lake energy/lake heat extraction, Municipalities and public sector, Leisure (swimming and sauna rafts, playgrounds), Municipalities/public sector
- 01
Project planning and consulting
- 02
CAD design
- 03
CAD/CNC programming
- 04
CNC machining (milling)
- 05
Plastic welding (HDPE, PP, PVC)
- 06
Pre-fabrication (e.g. insulated double pipes)
- 07
Transport and installation
- 08
Assembly (pipes, valves)
Materials and processes
High-density polyethylene (PE)
Main material for drinking water tanks, pipelines and floating bodies; lightweight, durable and helicopter-transportable.
Polypropylene (PP)
Plastic welding work and tank components for technical applications.
Polyvinyl chloride (PVC)
Processed in the plastic welding area for specific applications.
Ductile cast iron pipes
Pipe material for wastewater cast iron pipes, e.g. Ø 500–600 mm laid in an open trench.
V4A stainless steel
Fittings such as ladders, gratings and levers for tanks and shafts.
WPC decking boards
Surface of swimming and sauna rafts on PE floating body structures.
Sites

Emmetten
CHWorkshop and production hall, production and shipping
- Part weight / size
- Tanks up to 100 m³, Ø 3000 mm, length 23.2 m
- Lot size
- Custom single-item and project manufacturing
- Materials
- HDPE, PP, PVC
- CNC milling centre (plastics machining, since 2016)
- Production hall incl. 600 m² extension (2016)
- Storage yard
Seelisberg
CHPostal address and administration (Dorfstrasse 28)
Components and products





Inside the production








Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Plastic welding (HDPE, PP, PVC)Joining | – | – | – | – | HDPE, PP, PVC |
| Butt weldingJoining | – | – | – | – | PE |
| Electrofusion socketsJoining | – | – | – | – | PE |
| Tank construction (drinking water reservoirs, wastewater tanks, pump shafts, valve shafts) in PE,Plastics | – | 23.2 m × 3000 mm (Ø) | 4500 kg (helicopter transport) | – | HDPE |
| Pipeline construction, plastic pipes (PE, incl. large-diameter pipeline construction Ø 110–560 mm)Assembly | – | – | – | – | PE |
| Pipeline construction, cast iron pipes (ductile cast iron pipes Ø 500–600 mm)Assembly | – | – | – | – | Cast iron (ductile cast iron pipes) |
| CNC machining / CNC millingMachining | – | – | – | – | HDPE, PP, PVC |
| CAD design / project-specific CAD/CNC programmingEngineering | – | – | – | – | – |
| Project planning / project management / consultingEngineering | – | – | – | – | – |
| Manufacture of drinking water tanks according to SVGW certificationPlastics | – | – | – | – | HDPE |
| Assembly of valves and pipelines (incl. installation on suspended rope)Assembly | – | – | – | – | – |
| Pre-fabrication of insulated double pipesPlastics | – | – | – | – | PE |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC milling centre (for plastics machining) | – | – | – | 2016 | Seelisberg/Emmetten |
Additional services
Reference customers
Quality and certifications
Alois Bader AG has been SQS-ISO 9001 certified since 2003 (recertification to ISO 9001:2015 in April 2018) and is certified by SVGW for drinking water tanks. Product quality for drinking water as a foodstuff is guaranteed by the SVGW certification; designs are checked in advance in CAD for production and operational suitability.
| Evidence | Emmetten |
|---|---|
| ISO 9001:2015 (SQS) | |
| SVGW certification for drinking water tanks |
Company history
- 1942
Founded as a locksmith and farrier business in Seelisberg.
- 1967
Alois Bader joins his father's business as a plumbing installer.
- 1974
Alois Bader takes over the business; pipeline construction becomes a new line of business.
- 1989
The sole proprietorship is re-founded as Alois Bader AG.
- 1991
Construction of the production hall with storage yard in the Pfandacher area, Emmetten.
- 2003
SQS certification according to ISO 9001:2000.
- 2008
Spin-off of the plumbing division as Bader Sanitär GmbH (Pascal Bader), Seelisberg.
- 2011
Company handover to Adrian Bader as owner and management.
- 2013–2016
Generational project, drinking water pipeline Seelisberg (810 m, 465 m drop in elevation).
- 2016
Extension of the workshop and production hall by 600 m² and commissioning of a CNC milling centre.
- 2018
Successful recertification according to ISO 9001:2015.
- 2020
New facade signage for the production hall built in 2016.
- 2021–2022
Major projects: lake pipeline 12.2 km Lake Uri, 6 drinking water reservoirs Buochserhorn (5–84 m³), lake energy PE pipeline Lucerne (8.3 km).