Studies of the bacteriological water quality for the intakes of different water treatment plants in greater Cairo.
Water samples from the intakes of 10 water treatment plants at Greater Cairo were bacteriologically tested for total bacterial counts, total coliforms, fecal coliform and fecal streptococci during 1984-1986. The total bacterial count ranged between 10(4)-10(6), 10(3)-10(6), and 10(3)-10(5)/ml during 1984, 85, and 86 respectively. Total coliform density ranged between 0-10(3), 10- greater than 10(4), and 10(2)- greater than 10(4)/100 ml during 1984, 85, and 86 respectively. Although fecal streptococci density does not exceed 10(3)/100 ml in most cases, large numbers of samples are negative for fecal streptococci. By using fecal streptococci as an indicator it is possible to avoid interference between the total bacterial count and coliforms detection. It is important to gain a real judgment about the public health safety by testing the sample for both coliforms and fecal streptococci.
el-Zanfaly
H T
HT
Water Pollution Control Laboratories, National Research Center, Dokki, Cairo, Egypt.
el-Tonssy
M D
MD
D015169:Colony Count, Microbial; D004534:Egypt; D004755:Enterobacteriaceae / Q000302:isolation & purification; D005243:Feces / Q000382:microbiology; D006801:Humans; D012621:Seasons; D013291:Streptococcus / Q000302:isolation & purification; D014871:Water Microbiology; D014881:Water Supply / Q000592:standards*