aqua (bluish green) tint to water

We have a new house in the Ottawa area that is only 1 year old. We have all PVC piping and we've noticed over the last several days that we now have a greenish bluish tint to the water. We don't see the tint in small cups of water but it's definitely noticeable when filing up a bathtub. We have a standard water treatment (softner and carbon filter) plus a chlorinator because we have high iron and sulfur in the water. Any idea what could be causing the bluish green tint in the water ? Everything I've read says that it could be copper contamination but that's almost impossible here since we have almost no copper except for at the water treatment point only. Thanks.
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wrote:

Have it tested before you start shotgunning a fix. Find out what it actually is.
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In Vancouver area, the "city" water comes from a lake up in the mountains in North Vancouver. When I filled our hot tub, lo ! the water had a green tinge to it !
Then I thought..what color is the water in the lake (before they send it down the pipe)..
GREEN

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wrote:

I'm told the blue and greenish tint in a Glacier is actually oxygen. Said to be cleaner than what we have today.
-- Oren
"I don't have anything against work. I just figure, why deprive somebody who really loves it."
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