The city’s director of Engineering, Donny Burden, says the city started testing a few years ago using tiny metal coupons and have been weighing them to determine the loss.
The results of a recent test has shown that finished water in Corner Brook is still corrosive. The issue was discussed at Monday night’s public council meeting. Deputy Mayor Linda Chaisson says this means the city has to increase chemicals to reach target levels. The orthophosphate dosage has been increased from 1.35 to 1.65 mg/l. The increase is in line with what was specified during the commissioning process. Also, the Soda Ash was increased to achieve a higher water PH. Currently, our PH is 7.5 to 7.55 with a target of 7.8 PH. The increase in chemical dosage will mean an extra $5500 a month for treatment.
The city’s director of Engineering, Donny Burden, says the city started testing a few years ago using tiny metal coupons and have been weighing them to determine the loss. He says it was a money saving measure at the time but the chemicals can’t be reduced and the city has actually returned to the previous levels of chemicals.