[Preliminary note on the study of seawater pollution of the Saharan coast of Tunisia].

The study to an analyse of 726 samples of sea water, taken monthly (1977-1978) at 23 stations. At the basis of the data concerning the NPP of total coliformas, 75,5% of the samples point out a clean water for the bathing place, 11,04% = "acceptable" and 9,96% = "dirty". Considering the data about the MPP of fecal coliformas and of fecal streptocques, the sanitary state is reported in 94,23% "clean for the bathing place", 1,77% "acceptable" and 4% dirty.