title: [Study and evaluation of effect on the parameters of heterotrophic plate counts in drinking water in distribution networks].
abstract: OBJECTIVE
  To study of effect on conditions and parameters of heterotrophic plate counts.
  
  
  METHODS
  chlorine, turbidity, total ferric, total organic carbon etc of distribution network were determinted in a northern city in China.
  
  
  RESULTS
  HPC (heterotrophic plate counts) got from R2A medium with longer culture time can reflect the real situation of bacteria in drinking water well. Water temperature was positively related with HPC. Free chlorine was better negatively related with HPC. The results of turbidity and total ferric were better positively related with HPC. TOC content was positively related with HPC.
  
  
  CONCLUSIONS
  There are many parameters affecting dringing water quality especially in the residential area with complex water power condition, it can't be represented by one parameter and it should be thought about with all parameters synthetically.
authors: School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
authors: Qing
authors: Q
authors: Wu
authors: Xinhua
authors: X
authors: Zhao
mesh_terms: D001419:Bacteria / Q000187:drug effects* / Q000254:growth & development; D002681:China; D002713:Chlorine / Q000032:analysis*; D002947:Cities; D005290:Ferric Compounds / Q000032:analysis; D009930:Organic Chemicals / Q000032:analysis; D014871:Water Microbiology; D018508:Water Purification / Q000379:methods; D014881:Water Supply / Q000032:analysis*
chemical_list: D005290:Ferric Compounds; D009930:Organic Chemicals; D002713:Chlorine