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Peru’s water stress reflects uneven basin distribution and governance gaps

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Research area:water-hydrologywater-management

What the study found

The study found that Peru has abundant national water overall, but this masks severe regional imbalance between basins. The Pacific basin, where most people live, has far less renewable water than the Amazon basin, and the authors describe this as a case of hydrological asymmetry.

Why the authors say this matters

The authors conclude that Peru’s water problem is not just about climate or total supply, but about the mismatch between water availability, population, and governance. The study suggests that without institutional changes, coastal scarcity may deepen while Amazonian water remains underused.

What the researchers tested

The paper presents an integrated assessment across three drainage basins in Peru. It examines resource distribution, human pressure, governance under Law 29338 (the 2009 water law), economic compensation mechanisms, groundwater extraction, and climate projections for glacier-fed Pacific basins.

What worked and what didn't

The abstract reports that the Pacific basin holds 1.9% of renewable water resources while supporting 66.4% of the population, and that the Amazon basin holds 97.8% of resources for 30.4% of the population. It also states that groundwater extraction in coastal regions is at 100% of renewable recharge limits, and that runoff in glacier-fed Pacific basins may fall by 30% by 2100. The authors say current governance and compensation systems have not resolved these imbalances.

What to keep in mind

The abstract does not describe the underlying dataset, sample size, or analytical methods in detail. It also presents policy recommendations, but the summary available here does not show testing of those recommendations.

Key points

  • Peru’s national water abundance masks strong regional inequality in basin-level water availability.
  • The Pacific basin has 66.4% of the population but only 1.9% of renewable water resources.
  • The Amazon basin contains 97.8% of resources for 30.4% of the population.
  • The authors say current governance under Law 29338 has not corrected the mismatch between supply, demand, and institutional capacity.
  • Coastal groundwater extraction is reported to be at 100% of renewable recharge limits.
  • The abstract projects a 30% runoff reduction in glacier-fed Pacific basins by 2100.

Disclosure

Research title:
Peru’s water stress reflects uneven basin distribution and governance gaps
Authors:
Juan Eduardo Suarez Rivadeneira, Freddy A Manayay, Jhon Danilson Campos Mego, Wilfredo Ruiz Camacho, Ítalo Maldonado Ramírez, Gustavo Adolfo Perez Londoño
Institutions:
National University Toribio Rodríguez de Mendoza, National University Toribio Rodríguez de Mendoza, National University Toribio Rodríguez de Mendoza, National University Toribio Rodríguez de Mendoza, National University Toribio Rodríguez de Mendoza, National University Toribio Rodríguez de Mendoza
Publication date:
2026-03-30
DOI:
10.12688/f1000research.176208.1
OpenAlex record:
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AI provenance: This post was generated by gpt-5.4-mini (OpenAI). The original authors did not write or review this post.

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