Latest Discussions : Plumbing


04:42PM | 03/25/07
Member Since: 03/24/07
2 lifetime posts
We purchased a 7 year old home and when we put water in the soaking tub in the master bath, the water turns blue. Could this be a special kind of tub? I can't find anything about it online.


06:11PM | 03/30/07
Member Since: 04/01/05
32 lifetime posts
I am guessing that you have a low pH and using copper pipes. Is that right?

If so, you would need to neutralize the water by raising the pH by a variety of different ways depending on the pH level.

Gary Slusser

04:20AM | 03/31/07
Member Since: 02/17/04
112 lifetime posts
Blue usually means copper in the water. A water test for copper will tell if it is the cause.

If it is, there are a number of causes; low pH acidic water, high TDS, DO and CO2 content, hot water recirculation systems with excessive velocity, dissimilar metals corrosion, bacteria and electric grounds on copper tubing or a bad building ground etc..

All can lead to pinhole leaks in copper tubing.


Quality Water Associates


05:51PM | 04/01/07
Member Since: 03/24/07
2 lifetime posts
When we put the bath water into a clear glass, the water was clear. It only appears blue. This is what makes me think it's a special coating on the tub.


12:44PM | 11/09/15

Doreen! Me too and it is only the one bathtube not in the guest bathtub, did you ever figure out what it was?


06:06PM | 11/11/15
Ask the moderator she knows everything about plumbing. heating AC and roofing and electrical


04:41PM | 12/24/20
Ours too! Brand new stand alone Ove tub. Our newly refinished cast iron tub doesn’t make the water appear blue. I feel like tue tub finish is made to make the water appear blue. It does look pretty!

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