PSJ commissioners debate pilot study

Published: Friday, November 30, 2012 at 09:51 AM.

The two paths Kozan said the study would likely provide for a fix would be either to modify the corrosion control agent used in treatment, along with the pH of the water; and two, possibly adding a new chemical to the water during treatment.

Mayor Mel Magidson wondered if the source of the problem wasn’t already known – iron and corrosion in aging pipes, some in the ground as long as 70 years, that is being loosened by a corrosion inhibitor used to treat the surface water.

“I thought two years ago we concluded it was iron in the pipes,” Magidson said. “Does anyone not believe it is iron in the pipes?”

Kozan replied that the idea of the profile of the water distribution system was “to get to where and why this is happening so we are systematically shooting at the right target.”

He agreed that iron in the pipes was logically the primary problem, but that the focus of the pilot study was to definitively rule out other problems.

One of the issues plaguing isolating the problem is discolored water coming from newer PVC pipes. Another is there are blocks on which the problems with discolored waters are not consistent – one house may have issues while down the street another resident has seen no discoloration of water.

“We want to make sure we aren’t missing something else,” Kozan said.

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