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New Build - Poor Water Pressure
Posted on 6/5/26 at 7:46 pm
Posted on 6/5/26 at 7:46 pm
Bought a new house a few months ago. We’ve dealt with poor water pressure since moving in. If you are trying to take a shower while another water source is being used it’s damn near a trickle.
I reached out to the builder, they came out and agreed pressure dropped significantly when another source is running. Tested it and claimed it was a city problem.
City came out and said it’s a gravity feed house and it’s two stories. They said the builder should have installed a 1” main line for more volume.
What say the H&G board?
I reached out to the builder, they came out and agreed pressure dropped significantly when another source is running. Tested it and claimed it was a city problem.
City came out and said it’s a gravity feed house and it’s two stories. They said the builder should have installed a 1” main line for more volume.
What say the H&G board?
5
Posted on 6/5/26 at 8:33 pm to GeauxTime9
Check the code...
Posted on 6/5/26 at 8:46 pm to GeauxTime9
Youre between a rock and a hard spot. Did they install a 1" feed from the street to the house? Seems like thats the minimum id want.
Worst case scenario you could install a pressure tank. Its not ideal but itll get your pressure up a bit.
Worst case scenario you could install a pressure tank. Its not ideal but itll get your pressure up a bit.
Posted on 6/5/26 at 9:02 pm to WhiskeyThrottle
quote:
Did they install a 1" feed from the street to the house?
Builder installed a 3/4” from meter to home.
Posted on 6/5/26 at 9:04 pm to RadRob
quote:
Check the code...
The code reads as minimum of 3/4” but factors should be taken into consideration to ensure a larger option isn’t needed.
Posted on 6/5/26 at 9:23 pm to GeauxTime9
quote:
Builder installed a 3/4” from meter to home.
That’s too small. Mine is 1.5”. Just had to repair it a few months ago.
I said wrong. Mine is 1,25” to the house.
This post was edited on 6/7/26 at 7:50 am
Posted on 6/5/26 at 9:52 pm to GeauxTime9
quote:
The code reads as minimum of 3/4” but factors should be taken into consideration to ensure a larger option isn’t needed.
Typical builder BS. Just put what’s required and not what’s needed. Anything to save a dollar.
Posted on 6/6/26 at 9:14 am to GeauxTime9
Take a pressure reading at the house on the second floor….one with everything off and one with something flowing. City water pressure in sometimes over 90 psig for reference. Double check every valve that is supposed to be open.
3/4” service line does seem small, particularly if the house sits a long way from the street. You could always trench in a parallel 1” for very little money.
3/4” service line does seem small, particularly if the house sits a long way from the street. You could always trench in a parallel 1” for very little money.
Posted on 6/6/26 at 9:18 am to jasonbr1975
quote:
Typical builder BS. Just put what’s required and not what’s needed. Anything to save a dollar.
Absolutely. My parents bought a spec house in a very nice neighborhood. The cheap arse shite they’ve discovered in the last few years is despicable. They used particle board at the soffit for half the house, didn’t cut to the vent in the attic, etc.
Posted on 6/6/26 at 10:22 am to Spankum
quote:
You could always trench in a parallel 1” for very little money.
Prob the best bet. Or even 1 1/4 if you can. Sucks that you will have to foot the bill tho.
Posted on 6/8/26 at 11:46 am to GeauxTime9
Should have installed 1" but you can also install a residential booster pump. Just another thing to maintain. Have one at our camp that's 20' in the air and has needed only minor stuff since we installed roughly 2013. Had to change a capacitor February of this year but its still chugging and caps are cheap.
Posted on 6/10/26 at 1:41 pm to GeauxTime9
Get you a guage like this and put it on your hose bib and see what the static pressure is with everything shut (this is independent of the feed line size). This would give more info on if it is a city water pressure issue.
3/4' main line is the standard. It is very common and 90% of the time sufficient.
If you have good pressure like 50+psi, then you can probably assume it is pipe size related. If you have less than that the pipe size is probably not the bottle neck.
Edit: Sorry i left out the guage link: Hose Bib Pressure Guage
3/4' main line is the standard. It is very common and 90% of the time sufficient.
If you have good pressure like 50+psi, then you can probably assume it is pipe size related. If you have less than that the pipe size is probably not the bottle neck.
Edit: Sorry i left out the guage link: Hose Bib Pressure Guage
This post was edited on 6/10/26 at 3:31 pm
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