Causes of Low Water Pressure

Good water pressure is something many homeowners take for granted. In a home lacking optimum water pressure, the dishwasher performance is subpar, the washing machine takes longer to fill up, and faucets slow down to a trickle. Showering also becomes time-consuming as you struggle to rinse soap and shampoo away because you aren’t getting an adequate water flow to do an efficient job.

The team at Conejo Valley Home Services Plumbing & Rooter are here to help you look at the common reasons why homeowners experience low water pressure and how to remedy the problem throughout your home.

Causes of Low Water Pressure

What is Low Water Pressure?

Low water pressure is when the water flowing out of plumbing fixtures, like faucets and shower heads, weakly drips out rather than sprays out at the average in-home water pressure. When the water pressure is low, it can significantly affect the quality of living in your home.

Why is My Water Pressure Low?

Living in a home with water pressure issues is time-consuming and frustrating, but what’s worse is that many homeowners don’t realize that you first need to identify the root cause before you can fix the issues. Instead, too many homeowners get used to living with their home’s low water pressure and risk significant plumbing problems in the future.

Causes of low water pressure can be directly attributed to several problems in your home. Some of the reasons why you’re experiencing low home water pressure include:

  • Damaged pressure regulator
  • Blockage in pipes
  • Partially closed water meter valve
  • Water distributor issues
  • Partially closed primary shutoff valve
  • Pipe mineral collection
  • Interior pipe deterioration
  • Pipe leaks

It is essential to learn how water pressure issues come to be so that you can have them fixed.

What Should My Water Pressure Be At?

Residential water pressure ranges between 40 and 60 PSI (pounds per square inch). Most homeowners prefer something right in the middle, around 50 PSI. We usually consider anything below 40 psi low and below 30 psi too low. On the other side of the spectrum, pressures above 80 psi are too high.

Low water pressure is a nuisance rather than a major problem because some fixtures, like washing machines, usually have minimum pressure requirements. High water pressure, however, is significantly more risky as it can cause damage to pipes, joints, fixtures, and seals - not to mention the increased water waste.

Ahead, we will look at the causes of low water pressure and how to fix low water pressure problems in your house.

What are the Causes of Low Water Pressure in the House?

When you’re having low water pressure issues with just one faucet or tap, it’s usually because of a problem with that specific fixture. But what about when you experience issues throughout the whole home?

Here are some of the issues that may be causing low water pressure in your house.

» Valves Aren’t Open All The Way

The first is the master house shutoff valve, which you probably haven’t messed with unless you’ve had some pipe leak or emergency. Just have a look anyway in case the kids tampered with it. In most cases, you can usually find it inside the house, but it may be somewhere outside.

The second is the water meter valve which belongs to your local water utility company. This valve is almost always accessed only by the water company. If you experience a sudden drop in water pressure after recent repairs, the serviceperson might not have fully opened the valve.

» Bad Pressure Regulator

When your home’s water pressure regulator fails, it could cause a sudden increase or decrease in the water pressure. One common reason for failure is the build-up of sediment in the valve, which could cause blockages, short cycling, or pump problems.

When your pressure regulator fails, you’ll notice an immediate reaction in your home. You might experience irregular water pressure that is hard to control with your sink, bathtub, or kitchen faucets. The water pressure will either be too high or too low.

» Old or Corroded Pipes

Corrosion is one of the most common causes of low water pressure in homes with older plumbing. Not only can your home’s pipes become clogged with scale, but they can also become restricted by corrosion. Such problems that lead to poor water pressure usually happen in homes with older, galvanized iron pipes, which can corrode due to the water’s pH level.

» Leaking or Clogged Pipes

Consider that the pipes in your home are much like your body’s arteries. Just as cholesterol can clog your veins, the build-up of limescale and other minerals can restrict the diameter of your pipes over time, leading to low water pressure.

Acidic water can cause corrosion, leading to small holes and leaks in your pipes. These tiny holes let water escape before it reaches your taps, resulting in lower pressure. Since pipe leaks and limescale clogs develop slowly over time, you may not notice it until the issue becomes bad enough that you need to open Google and search for “Leak detection services near me.”

Also Read: How To Fix A Leaking Pipe Behind A Wall And Minimize Damage

» Shared Mains Pipe

Some water pressure problems might develop when more than one property shares a supply pipe from the water main. While this is usually okay, problems can develop if the supply pipe is too small. Low home water pressure may also result from reduced pressure from the water main due to leakages, equipment failures, or service pipe blockages.

» Changes in Council Regulations

A problem with your home’s water pressure may have nothing to do with your home or its plumbing system; it could be a municipal water problem.

Your local council may have changed the local water regulations, and water suppliers must comply with newly introduced rules by reducing the amount of water they can supply to homes. You might require a water pressure booster system in such a scenario. A professional plumber can install such a system.

» Too Much Demand

Sometimes, there may be too much demand for your home’s water supply. There could be several plumbing fixtures running simultaneously, and as a result, the water pressure suffers. Some routine and coordination changes should help you avoid this problem and improve water pressure.

How Do You Fix the Water Pressure in Your House?

Make your low water pressure problems go away with these helpful fixes that can help increase the force and improve water flow in your home. Here’s how to fix low water pressure in your house:

» Clear the Clogs

Over time, your pipes may develop a build-up of mineral deposits, and the situation can be exceedingly awful if you have hard water. If unaddressed, the diameter of the pipes may decrease until they clog, killing the water pressure.

Vinegar mixed with baking soda is a popular solution for breaking up mineral deposits in pipes. Mix up a couple of gallons of vinegar and several cups of baking soda, and you have an effective homemade drain cleaner.

» Look Out for Leaks

Cracked or damaged pipes may leak water as it travels through your pipes, leading to low water pressure at the faucet. If you suspect your pipes are leaking but can’t find the leak, It’s time to call a pro. Quit your search for “Quality leak detection services near me” and contact Conejo Valley Home Services Plumbing & Rooter today!

» Install a Water Pressure Booster Pump

If you’re still wondering, “How can I improve house water pressure in my home?” it may turn out that the problem isn’t you but your neighborhood. Distance and gravity are two factors that may negatively impact water pressure.

If your household water supply travels uphill or far from the municipal water source, that may hinder its force. Consider installing a water pressure booster pump to increase the water flow rate when it reaches your home.

Still Having Issues? Contact Conejo Valley Home Services Plumbing & Rooter to Fix Your Water Pressure Issues!

Not able to fix your low water pressure? Reach out to our experts at Conejo Valley Home Services Plumbing & Rooter. You can Count on our team’s highly experienced, licensed, and certified plumbers to eliminate your poor water pressure!

We offer 24/7 emergency plumbing services for emergency drain cleaning, sump pump repairs, water heater repairs, and gas line replacements. Give our team a call at (703) 782-3712 or request service online, and we’ll fix your low water pressure the right way!

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Michelle Perez profile pictureMichelle Perez
18:37 12 Dec 25
I have used Conejo Seviced a couple of times now, and they have done a fantastic job both times. They were prompt, professional, easy to talk to, honest, and did the job in the specified time frame. I will happy to continue using them.
Lana Light profile pictureLana Light
02:38 12 Dec 25
Owen was my electric tech,
and from the conversation over a couple of electrical issues here, I understood quickly that Owen knows the line of work very well: educated, smart, polite, with down the the earth professional demineur... He checked the wiring, and explained the possibilities why my appliance keeps tripping the breaker..
Thank you Owen.
The company has a right set up. They would also remind you about the appointment, and would convinietly call you a few minutes ahead.

They have the right codes... they won't walk in their shoes on your floors either...
I strongly recommend the Conejo company for your electrical issues...
Robert Lewis profile pictureRobert Lewis
22:40 11 Dec 25
Juan did an outstanding job. He is very professional and personable. He kept us informed on what he was doing. It was a pleasure working with him and Conejo Services. We have used you before and we have always had prompt and professional service. Thank you so very much.
Leslie Hackney profile pictureLeslie Hackney
18:30 08 Dec 25
When our 31 year-old furnace suddenly stopped working, they were out within 24 hours of my call. It was a quick and easy replacement part, but something we wouldn’t dare do ourselves. It’s good to know we’ve found a reliable repair service!
Alejandra Aldana profile pictureAlejandra Aldana
01:20 05 Dec 25
It was excellent service from the initial request to schedule an appt for electrical repairs and the installation updates as to the time and date of service technician arrival at work site. The service person was timely in his arrival time, considerate , respectful and courteous.
Major Tom profile pictureMajor Tom
13:06 03 Dec 25
David G. was patient, personable and explained things. He was thorough and cleaned up after himself. He is an asset to the company and exemplifies the level of professionalism and quality that I have come to expect from Conejo Services.
Linda Munday profile pictureLinda Munday
04:49 03 Dec 25
The entire staff were wonderful. The crew that came out to do the installation were so nice and respectful. I would recommend them to anyone.
Carol Riccobono profile pictureCarol Riccobono
23:09 01 Dec 25
Juan did an excellent job checking out our furnace and dryer vent. He was very informative and thorough. And he did not try to upsell us on other services.
Ted Haber profile pictureTed Haber
03:36 29 Nov 25
Omar was our electrician. He was very professional and easy to work with. He gets my vote.
Matt Bovard profile pictureMatt Bovard
22:26 26 Nov 25
I like supporting local Ventura county companies and then when they do such a great job it’s double gratification…
Joe F. profile pictureJoe F.
00:18 26 Nov 25
Heesse was on time, performed a HVAC tune up, and solved the problem of the thermostat not working. I know who I will contact for future hone repair needs.
Steve Kurasch profile pictureSteve Kurasch
21:18 25 Nov 25
Jesse was here right on time to do testing and inspection of our furnaces. He was very thorough, professional and knowledgable and corrected several problems that other companies missed. He also gave us some options to look at in the future. We signed up for their maintenance plan and feel very confident that Conejo Services will meet our needs now and in the future. Thank you for giving us peace of mind!
Mary O'Sullivan profile pictureMary O'Sullivan
00:55 14 Aug 25
This company really stands behind its work. I have the platinum maintenance for my both HVAC and plumbing, both installed by them and it really pays off. The plumbing area, especially, led by Andrew Dilger and team are honest, thorough, skilled and offer options from minimal to full overhaul with pro’s and cons and short vs. long-term financial differentials of each approach. I have an older home with pipes at end of their 60 year shelf-life and it’s a new area for me. It’s really great to be able to trust a company when the product isn’t visible, but buried in the ground. I liked Derek who identified a potential issue during normal maintenance and the oversight of Andrew confirming it and best approach. I think it’s the honest approach set by senior management, including Andrew, Ralph and others. And highly professional! Kudos!
Jennifer Friedman profile pictureJennifer Friedman
00:45 10 Apr 25
We were on Conejo’s maintenance plan for a while. We found they were very thorough in checking our A/C, plumbing and electric systems. It is worth considering these plans.

We had other work done where we felt the pricing was quite high, like for a garbage disposal and for installing a tankless hot water heater. So consumers should be sure to do price comparisons.

When they put in our tankless hot water heater, there were a couple of code violations that needed to be corrected, plus we had some questions about the costs. But when our concerns finally reached the Customer Service managers, their response was excellent and all our concerns were immediately and satisfactorily resolved.
Rick Phillips profile pictureRick Phillips
00:10 03 Feb 25
I strongly suggest getting cost estimates from other companies before hiring Conejo. I was provided an estimate of $7149 to perform what turned out to be 7 hours of work by two (relatively low paid) employees and a couple hours to use specialty equipment to pinpoint failure point. I had a blockage in my home sewer system caused by root intrusion. By using their tool inserted into the sewer pipe they said the blockage was 8 feet deep and under my concrete entryway walkway and would therefore take two workmen 2 to 3 days to complete the repairs. I questioned that pricing since it seemed too high and was provided a reduction of $850 to $6299. That still seemed like a high price but I needed to get the work done quickly so I accepted the bid. (My big mistake.) I monitored the work when their two workmen came to make the repairs. I am retired from SoCalGas so have some knowledge about excavating and fixing damaged pipe. The sewer pipe was only 3 feet deep, not 8 feet deep. The work involved digging and exposing the 4-inch plastic sewer pipe and then cutting out a 3-foot section and installing new pipe, then backfilling the excavation (which was done poorly – was not well compacted – I did this after they left as best I could. I hope my entryway sidewalk doesn’t fail/crack in the future.) They completed the work in 7 hours. I then contacted Conejo and asked to them to reconsider the price since the basis of the estimate was incorrect. I eventually spoke with their plumbing manager, Nick, who said he would speak with the person who developed the estimate and get back to me. Nick never got back to me even though I called their offices twice and texted Nick. The next contact I had from Conejo was a revised bill reducing the charge by $500, leaving me with a bill of $5799. On the positive side, the people I spoke with in their billing and/or scheduling department with friendly and responsive.
Ben Rogers profile pictureBen Rogers
17:47 26 Jan 25
Conejo installed a new furnace and water heater at my home, and I’m so impressed with the quality of their work. Their prices are competitive and their team is the best!
Pav G profile picturePav G
20:40 08 Aug 24
Outstanding Service from Alfredo at Conejo Valley Heating and AC

We’ve had ongoing AC issues for a couple of years, and after trying other companies, we finally found the solution with Alfredo from Conejo Valley Heating and AC. The level of professionalism and quality of work Alfredo delivered was unparalleled.

From the moment he arrived, Alfredo impressed us with his attention to detail—respecting our home by wearing booties and carefully assessing the situation. He identified the root cause of our AC problems, taking his time and staying late into the afternoon, even after a long, busy day. As the last appointment of the day, Alfredo made sure our AC was fully repaired before leaving.

Beyond fixing the immediate issue, Alfredo also provided valuable advice and options for maintaining our AC in the future, along with some helpful plumbing suggestions. His dedication to his craft and customer service is truly world-class.

We highly recommend requesting Alfredo if you’re considering Conejo Valley Heating and AC. We’ve permanently requested him as our go-to technician for any future needs. His work is simply outstanding, and we couldn’t be more satisfied with the service.
Jason D profile pictureJason D
19:01 13 Jun 24
A home inspection was done for the sale of our home and the inspector flagged our furnace as not having a furnace door switch and being a potential fire hazard. Parker arrived to open the furnace door to find that the switch had a piece of black tape over it to protect it, he removed said tape, job done. Unreal. Thanks Parker.
Cindy Gooden profile pictureCindy Gooden
22:09 04 Jun 24
Gave us an estimate and we decided to wait a few months before booking. I called when we were ready to book, but the person they directed us to never called us back!

We ended up choosing another local plumber who charged half what CVHAPR quoted us. I'm so glad we got a second opinion.
Amber Hauptman profile pictureAmber Hauptman
18:56 10 May 24
Parker was awesome! He was very informative and answered our million questions! Looking forward to working with him again soon! Thank you Parker!!!

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