Company's irregular disposal left waterfall water with a yellowish tone in Americana stream Reproduction/EPTV After finding recurrent oil and grease residue during an inspection this Thursday (11), the Environmental Company of the State of São Paulo (Cetesb) forced the multinational tire manufacturer Goodyear to carry out a new cleaning in Córrego Bertini, in Americana (SP). In April 2026, a problem in the company's sewage treatment system caused an irregular dump of substances into the watercourse, which turned yellowish. According to Cetesb, some rocks around and points in the stream still contain residue, which will need to be eliminated. The state agency's finding is consistent with a report on the measures adopted delivered by Goodyear itself on May 5 of this year. ✅ Join the g1 Campinas channel on WhatsApp In the document, the multinational mentions that emergency cleaning actions were carried out, but there were "specific residues in the watercourse, the total removal of which remains under technical evaluation". g1 contacted Goodyear, but did not receive a response until the last update of this article. Remember the case Cetesb investigates grease disposal in Americana stream Thiago Garcia On April 1, 2026, Cetesb issued an infraction notice against Goodyear due to irregular disposal of oil and grease in the Bertini Stream. The multinational was fined R$115,200 and forced to remove the waste, as well as draw up an action plan to recover the site. According to the document, the company had up to 30 days to meet the conditions imposed by the state agency. Although this deadline was met and the actions were carried out, Cetesb assessed, this Thursday, that the cleaning was not adequate. Goodyear will be notified to complete waste removal. Irregular disposal Company is fined R$ 115 thousand for disposing of oily material in a stream in Americana The stream is between Vila Bertini and Parque Nova Carioba, in an area that is difficult to access. Irregular disposal left the water in a waterfall, formed by a tributary, with a yellowish tone. Furthermore, resident Thiago Garcia found black material, similar to grease, in sections of the stream. Along with the environmental protection group "Amigos Pela Natureza", of which he is a member, he contacted Americana City Hall and filed a police report. During an inspection, the municipal administration and Cetesb identified traces of an oil-like substance in some points of the stream, close to the outlet of Goodyear's treated waste. "It could make the water unsuitable, harmful or offensive to health, inconvenient to public well-being, harmful to fauna and flora, detrimental to the use and enjoyment of the property, as well as normal community activities", explained the environmental company. VIDEOS: everything about Campinas and the region See more news from the region on g1 Campinas