No, it's not advisable to drink the tap water.
Cidreira, Brazil's tap water quality is not well-documented, but generally, Brazil's tap water is considered safe to drink.
However, it's always a good idea to take precautions: check with your hotel or locals about the local water quality.
Boiling or using a water filter can also minimize any potential health risks, making tap water safer to consume.
Cidreira, Brazil's tap water sources are mainly surface waters from the Lagoa dos Barros and Rio Tramandaí rivers.
These rivers are fed by surrounding watersheds and are treated at the local water treatment plant before distribution.
Groundwater sources may also be used, but surface water is the primary source of Cidreira's tap water supply.
Public drinking fountains in Cidreira, Brazil may not be safe for consumption without proper treatment and maintenance.
It's best to avoid drinking from untreated public fountains, as water quality can be unpredictable.
Stick to bottled or filtered water, or drink from treated and monitored sources, like hotels or restaurants.