Farming is a cornerstone of Laos’ economy, engaging approximately 60–70% of the population, with subsistence agriculture dominating rural livelihoods. Rice, the primary crop, occupies 80% of cultivated land and is predominantly rain-fed, making it highly susceptible to climate variability. Other significant agricultural outputs include maize, cassava, fruits, vegetables, and high-quality coffee, particularly from the Bolaven Plateau. Livestock farming also plays a vital role, with cattle and buffalo raised for both meat and labor. Despite its importance, Laos’ agricultural sector faces serious challenges, especially its reliance on rainfall and limited access to clean water resources.

Clean water is essential for sustainable agriculture, influencing crop yields, livestock health, and soil integrity. Contaminated water introduces harmful chemicals and pathogens that threaten food safety, reduce productivity, and degrade environmental quality. Multiple pollution sources—including industrial discharge, agricultural runoff, untreated sewage, and urban waste—contribute to the growing problem of water contamination, especially in rural areas.

To address these challenges, this research highlights the Solar Stream Puritech system, a solar-powered, eco-friendly water purification solution capable of delivering safe water directly from natural sources. By integrating renewable energy with filtration technology, this system offers a scalable approach to improving agricultural resilience, public health, and environmental sustainability in remote Laotian communities. The study underscores the critical role of clean water access in achieving food security and promoting sustainable rural development.