“…That was expected since Ribeira is under direct influence of sewage, stormwater and especially marinas, whereas Itaguá is under influence of similar sources (mainly sewage and stormwater). Marinas (King et al, 2004;Neira et al, 2017), sewage (Nichols & Espey, 1991;Wlodarczyk-Makula, 2005;Gasperi et al, 2012) and stormwaters (Launay et al, 2016;Rogers, 2002) have been identified as local sources of PAHs. In addition, Itaguá waters are often considered by the State Environmental Agency as of poor quality for bathing (CETESB, 2008(CETESB, , 2013(CETESB, , 2016.…”