"Pervious concrete is designed to let water seep through to the underlying ground, and can reduce storm-water runoff and recharge groundwater supplies. While the product has existed for decades, it is relatively new in Hawai'i.
The pervious concrete is a mix of 3/8-inch rock with cement and water; no sand is used.
"A full 5-gallon bucket (of water) will disappear within seconds," when poured onto the pervious concrete, Baginski said. "It runs through it like there's almost nothing in its path.""
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