Day 648

Stormwater inlet curb dots

October 8th, 2013

Once you start noticing these colored dots of spray paint on the curb above storm drains, you see them everywhere. I believe each pair of dots indicates that the grate was cleaned during a certain year the catch basin beneath the grate was treated with larvicide during a certain period of time in an effort to kill the mosquitoes that transmit West Nile virus.


  1. Toad says:

    They drop pellets in them to combat the West Nile virus. Each color is for a different time and shows they were done.

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