Concentration and diversity of uncultured Legionella spp. in two unchlorinated drinking water supplies with different concentrations of natural organic matter.

ABSTRACT: Two unchlorinated drinking water supplies were investigated to assess the potential of water treatment and distribution systems to support the growth of Legionella spp. The treatment plant for supply A distributed treated groundwater with a low concentration (<0.5 ppm of C) of natural organic matter (NOM), and the treatment plant for supply B distributed treated groundwater with a high NOM concentration (8 ppm of C). In both supplies, the water temperature ranged from about 10°C after treatment to 18°C during distribution. The concentrations of Legionella spp. in distributed water, analyzed with quantitative PCR (Q-PCR), averaged 2.9 (± 1.9) × 10(2) cells liter(-1) in supply A and 2.5 (± 1.6) × 10(3) cells liter(-1) in supply B. No Legionella was observed with the culture method. A total o

SUBMITTER: Wullings BA 

PROVIDER: S-EPMC3020564 | biostudies-literature | 2011 Jan

REPOSITORIES: biostudies-literature