Quote:
Originally Posted by Thats Fresh
here in virginia beach, lots of neighbors have these dump off lakes or small ponds in the neighorhood. that is where the street runoff water go and collect. it a must here since we live to many tributaries, chesapeake bay and atlantic ocean. the water from the house does go to treatment plant.
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Yeah, those are retention ponds and are a usually a must with larger new developments. The sewer systems are older and where there might of been an old factory or just a bunch of vacant land you might now have a whole new sub division with a few hundred new homes. If you are in a combined system it won't handle that extra load so the run off water goes to the retention pond.