Variation in city water pressure?


Old 08-29-09, 05:37 PM
Thread Starter
Join Date: Oct 2008
Location: USA
Posts: 2,882
Received 5 Votes on 5 Posts
Variation in city water pressure?

I recently installed a pressure gauge on our city water supply (just after the meter). Interestingly, it varies over a minute or so (without any water demand in our house).

Most typically, it will vary from, say, 50-55psi (within a minute or so). I've seen it vary down to 40 and back up to almost 60 within a minute.

I'm not really worried about this, but I'm wondering what is going on? We live about a mile from the water plant and the city's elevated water tank. This pressure variation goes on pretty much continuously (no fires going on!). There should be no lawn sprinkling going on anywhere in the city (too much rain). Strange.

Any comments would be welcome.
Sponsored Links
Old 08-30-09, 04:08 AM
Forum Topic Moderator
Join Date: Mar 2005
Location: USA - N.E.Tn
Posts: 46,080
Received 120 Votes on 107 Posts
Could it be the gauge?

I have city water and live on top of a tall hill. My pressure averages 20-30psi although occasionally it will get as high as 50-60 and at times quit altogether depending on usage by other water customers. I have one of those pressure gauges that you screw on a hose bib but have never noticed the pressure changing minute by minute. My house is approx 400' from the meter and a lot higher.
Old 08-30-09, 12:15 PM
shacko's Avatar
Join Date: Aug 2005
Location: Baltimore County Maryland
Posts: 2,138
Received 0 Votes on 0 Posts
Water Pressure

Municipal water system pressures vary with usage, if you check them around 5:00 PM you can see a large drop due to people returning home from work and jumping into the shower.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes
Ask a Question
Question Title:
Your question will be posted in: