Freshwater supplies threatened in centr...(iate methods of pumping. Long horizontal...)

Date:8/14/2007

iate methods of pumping. Long, horizontal infiltration pumping galleries or skimming wells, placed just beneath the groundwater table (the top layer of soil and rock that is saturated with water) provide the best method of skimming off lower salinity groundwater. The study team tested the impact of infiltration galleries on lowering the watertable and on salinity. The researchers also used the results to examine how the permeability of the coral sands varied across islands and found that surface contaminants could reach shallow fresh groundwater within an hour of being split on the soil surface.

The team proposed a number of strategies to help increase the resilience of small island communities to water??related climate and human changes. These included: providing a sound institutional basis for the management of water and sanitation; improving community participation in water and related land planning and management; increasing the capacity of villagers and local agencies to manage water and sanitation under variable climates; improving knowledge of available water resources and demand for them; improving water conservation and demand management and reducing leakages; increasing the use of rainwater by households and communities; protecting groundwater source areas from contamination; improving sanitation systems to minimize water use and groundwater pollution; and ensuring that water aid programs are long-term partnerships that foster local engagement and ownership of solutions.

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Contact: Sara Uttech suttech@soils.org 608-268-4948 Soil Science Society of America Source:Eurekalert

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