[Microbial colonization of lining materials and building materials in the drinking water supply. 10. The behavior of a polyamide pipe in use and under laboratory conditions].

After the installation of a new rising-pipe the count of bacteria in the water of a well increased temporarily. After a working period of 25 months the pipe was removed and microbiologically examined. On the inside and the outside of the pipe surface microbial growth could be observed. After the first increase of colony count in the water a comparable polyamid-pipe was tested microbiologically under laboratory conditions. In this case growth on the surface could also be found at 3 successive inspections.