(Seattle Public Utilities photo)

The West Seattle Flush goes on – with a new twist. 7 months after Seattle Public Utilities announced it would start flushing local water mains to clear the sediment that resulted in brown-water problems in a variety of circumstances, they’re about to deploy new technology.

Next week (Nov 7 -11) SPU will be in two West Seattle neighborhoods testing a new water main flushing technology that eliminates the need to discharge thousands of gallons of water into storm drains.

The new method consists of a utility trailer (photo above) with a filtering system. Connections between the trailer and water main are made with large diameter hoses attached to fire hydrants. Water used to flush the water main is circulated through the filtering system and returned back into the water main.

The attached two map show the two areas where we’ll be flushing water mains and using this new method. I’ve also enclosed the public notice sent to Arbor Heights residents, where we’ll be flushing at the end of the week (Nov 9 -11).

You can read that notice here.