Agriculture is the base of almost all commerce. Corn, beans, and coffee are the main cash crops, the sale of which provides income for other things like sugar and rice. Many of the remote villages have no access to education, healthcare, or clean water. Artesian springs provide most of the domestic water, which, because of the tropical climate, becomes contaminated soon after surfacing. Biosand water filters have been introduced to over 25 of these villages as of 2015, significantly improving health conditions. Part of the local 2015 coffee harvest was exported to the USA through a newly formed co-op, with 100% of the profits being returned to this area for infrastructure and capital for crop expansion.