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Storm water is everybody’s business!

When it rains, water is naturally absorbed into the ground, adding to O‘ahu’s water supply.  This is a good thing.  But when it rains so much or so fast that the ground cannot absorb it all (like a kitchen sponge full of water), the excess rainwater flows over the surface of the ground until it finds its way to the ocean through streams and the storm drain system.  That rain water is called “storm water runoff”.

Storm water runoff itself does not usually harm the environment.  However, impervious surfaces that do not allow the water to go into the ground, like driveways, sidewalks, and streets, can increase the amount and intensity of storm water runoff.  The water flows across these surfaces instead of soaking into the ground and can cause flooding and erosion problems. In addition, these imperious surfaces often accumulate urban pollutants faster than natural areas. The typical urban pollutants include oil, grease, trace metals, excessive nutrients, and other dangerous chemicals. Storm water runoff washes these pollutants off the impervious surfaces and carries them into our storm drains, streams and the ocean, where they affect water quality.

On this website, you can learn more about how you can help prevent storm water pollution by clicking the “About” link at the top.  You can also ask questions by clicking on the “Contact Us” link.

There are activities for children, public service announcements, a calendar of clean water events, and much more coming soon!