09:14AM | 05/10/05
Member Since: 05/09/05
1 lifetime posts
I have good water pressure on every faucet both inside and out, EXCEPT the kitchen sink. It is so low that my undersink water filter won't work (it requires 40 pounds) The builder refers me to the plumber who says he doesn't know why! Help!!!!

The house is 15 months old and passed all inspections except mine - I want decent water pressure at my sink.


08:01PM | 05/11/05
Member Since: 08/29/04
227 lifetime posts
It may be that there is a valve that is partially blocked going to the water filter and the faucet. Here's what I would do. I would remove the shut off from the end of the cold pipe coming out of the wall. Then I would have someone turn on the water while I held a bucket under the opening. If you have really good pressure, then its not your water pressure, its probably something blocking the lines or valve. You can also test the pressure under the sink, by installing a pressure gauge on the line coming under the sink. This will tell you what the static pressure is. If your water filter doesn't have enough pressure, there may be something blocking the hose going to the filter. If you find that the line coming to the kitchen sink doesn't have much volume, then there is a blockage somewhere along the line. It could be further down the line, but I doubt it. If the lines are new (new house) then its either the valves, the supplies, or the aerators.

Good Luck


Raymond VinZant Plumbing Prof.
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