Volunteers will tackle trash in 30 regions of the country in a cleanup sponsored in part by the tourism industry.
More than one tourist has commented on the accumulations of trash on the roadways and the beaches.
Participating are some 22 tourism firms and the Cámera Nacional de Turismo.
The Asociación Terra Nostra, which has been at the forefront of cleanup efforts for years, said that one place that will be targeted is Playa Guacalillo, as well as the adjacent Río Tárcoles, which has been termed the most contaminated part of the metro area.
The Río Grande de Tárcoles receives water from many metro are rivers, such as the Virilla. These carry heavy loads of trash from the urban area as well as raw sewage. The metro area does not yet have a functioning sewage treatment facility.
The Tárcoles empties into the gulf of Nicoya near Playa Guacalillo in the canton of Garabito. The beach is a natural collector of trash from the Central Valley. Thursday through Saturday has been designated as the time to clean the coasts and rivers. Ocean Conservancy has its International Coastal Cleanup at the same time. There will be millions of volunteers cleaning up all over the world.
Terra Nostra has been on the Pacific coast before and continues to collect thousands of plastic bottles and other trash. On one 2011 trip to Playa Guacalillo volunteers collected 4,335 kilos of trash that filled up 250 bags. The haul included 53 vehicle tires as well as eight for agricultural use, the association reported.
Many of the volunteers who will participate are workers at firms such as Grupo Roble, Coca Cola Co., Coca Cola Femsa, BAC Credomatic and Alimentos Pro Salud, said an announcement.