One evaluated the influence of drip tape arrangement and the use of chloride in the irrigation water, on soil sanitary conditions and growing lettuce (Lactuca sativa L.), irrigated with receiving urban waters. Water, soil and lettuce microbiological analyses were performed during crop cycle. The objective was to determine the presence of Salmonella spp., evolutive forms of human parasites and the amount of fecal coliforms in different locations and time, avoiding the lettuce consumption. Although results did not indicate the presence of Salmonella spp. and evolutive forms of human parasites in none of the samples but non human parasites (nematodes) of free life in soil. Total fecal coliforms count (NMP ml-1) met is according to the Brazilian Ministry of Health, Secretary of Health Surveillance requirements. Yet, the lettuce was not good for human consumption as the nematode presence was above the World Health Organization (WHO) guidelines.
Nematode; Salmonella; fecal coliforms; drip irrigation
