el-Zanfaly H T, el-Tonssy M D
Water Pollution Control Laboratories, National Research Center, Dokki, Cairo, Egypt.
Zentralbl Hyg Umweltmed. 1989 Jun;188(3-4):303-10.
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.
1984年至1986年期间，对大开罗地区10家水处理厂取水口的水样进行了细菌学检测，检测项目包括总细菌数、总大肠菌群、粪大肠菌群和粪链球菌。1984年、1985年和1986年的总细菌数分别为每毫升10⁴-10⁶、10³-10⁶和10³-10⁵。1984年、1985年和1986年的总大肠菌群密度分别为每100毫升0-10³、10-大于10⁴和10²-大于10⁴。虽然大多数情况下粪链球菌密度不超过每100毫升10³，但大量样本粪链球菌检测呈阴性。以粪链球菌作为指标，可以避免总细菌数和大肠菌群检测之间的干扰。通过对样本同时进行大肠菌群和粪链球菌检测来获得关于公共卫生安全的真实判断非常重要。
