Analysis of the toxicity of water in the municipality of Jundiaí - São Paulo, using the Trad-MCN methodology Karina Francisca Gonçalves Oliveira, Luciana Bizeto, Claudia Moura, Ana Beatriz Carollo Rocha-Lima

Abstract

Water is the most important and abundant substance existing in nature, and their use is essential that it provide appropriate physical and chemical conditions. Tradescantia pallida is a high-sensitivity plant for detection of chemical compounds present in water samples that may have mutagenic potential. The objectives of the present study was to determine the presence of toxic and mutagenic substances in pre and post-treatment of drinking water in the city of Jundiaí, using pretreatment water captured the dam of DAE and posttreatment water collected from the tap and to evaluate water treatment efficiency in relation to toxic and mutagenic substances. To evaluate the toxicity of water in the city of Jundiaí, we used the Trad-MCN methodology. The plant stems have undergone phase adjustment, intoxication and recovery and were stained and examined under a microscope for quantification of micronuclei structures which are indicative of mutations. There was no statistically significant difference (P <0.05) in the micronucleus amount of experimental sample (dam water) compared to the negative control (treated water) or white control (distilled water). There was a statistically significant difference (P> 0.05) in the micronucleus amount of experimental sample (dam water) relative to the positive control (formalin 1: 1000ml). The results suggest that the treated water in the city of Jundiaí has undetectable levels of toxic and mutagenic substances. These results do not preclude more specific tests for the presence of various pollutants.