
Overpumping and Rule of Capture
The Edwards Aquifer provides drinking water for over 1.7 million people.
The Austin/San Antonio corridor is expected to grow continually, requiring
more water if new growth is wasteful and not sustainable. Current pumping
form the aquifer has resulted in diminished pring flows in San Antonio.
Water hustlers are trying to secure rights to pump tremendous amounts
of water out of the western reaches of the Edwards Aquifer to pipe and
sell to other parts of the state. Texas' antiquated "Rule of Capture"
allows people to pump as much water from underneath their property as
they please, even if in doing so they cause their neighbors' wells to
go dry.
Groundwater districts have been established in most parts of Texas to
regulate groundwater pumping from different aquifers. The Edwards Aquifer
Authority regulates most of the Southern Segment of the Edwards Aquifer,
including San Marcos, New Braunfels, San Antonio, and Uvalde. The Barton
Springs Edwards Aquifer Conservation District regulates pumping in the
Barton Springs segment.
Development interests regularly try to weaken pumping restrictions to
protect spring flows for endangered species, as well as for the health
of downstream rivers and coastal ecosystems - and economies.
How can this region continue to grow without pumping aquifers dry? Reducing
consumption of water reduces perceived need to build new reservoirs or
drill deeper wells. Rainwater harvesting can provide residential development
with adequate - and tasty - water without surface or ground water. Improving
efficiency of transmission lines and appliances can save millions of gallons
of water each day.
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