this link shows praia do lameirão on a wikimapia - the link as we present it is best seen using google chrome, as it might not open correctly with other browsers.

on this link, the institudo estadual do ambiente (inea)provides the suitability of several beaches on paquetá island, including the nearby praia do pintor castagneto, that can be used to guess water quality at praia do lameirão.

constantly updated, the red flags mean that swimming is not advisable, green flags mean waters are clean, and yellow flags suggest using own judgment. 

any of rio's beaches may have polluted waters within 24 to 48 hours following heavy rains.