Bacteriological and chemical variations and their inter‐relationships in a slightly polluted water‐body

Abstract
The total plate count at 22°C and at 37°C, total coliforms (TC), faecal coliforms (FC) and faecal streptococci (FS) have been examined over a one year period at fifteen sampling sites in a little lake of central Italy (Piediluco Lake), together with chemical indices of both organic pollution (BOD5 and COD) and water mineral content (N‐NH3 Total inorganic nitrogen; Cl; Dissolved Solids; Conductivity; PO4 ‐3). The statistical treatment of data demonstrated an incomplete uniformity in pollutant distribution and particularly in the distribution of TC, FC, FS. The correlation between parameters has also been considered.