Mariana Fernández Sing
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Mariana Fernández Sing currently oversees the Environmental, Research, and Development submanagement at the AyA, a position that is significant in the context of environmental stewardship and regulatory compliance within Costa Rica's public water management.
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Recent news mentions
Mariana Fernández Sing is in charge of the Environmental, Research and Development sub-management at AyA.
AyA contrató a cuñada de la presidenta, Lourdes Sáurez, en puesto que originalmente estaba a cargo directo de la jerarcaLa Nación – main Costa Rican daily, est. 1946·
Costa Rica· 2026-02-14
Costa Rica· 2026-02-14
