Why Repipe Your Home?


Many homes, especially older homes, have been built with galvanized piping,
which rusts and deteriorates from the inside out over time.

Others may have soft copper piping under a concrete slab and this is prone to slab leaks. 


Does Your Water System Look Like This?

Corroded Galvanized Pipe

This is what happens when rust builds up inside galvanized water pipes. The rust restricts the flow of water and causes a build-up of gunk and slime throughout the system. If you still have galvanized pipes in your home, this is more than likely what your water supply piping looks like.

The water pressure in the main lines, at the street level, may be fine but as the water enters the property and moves through the house, the clogged pipes reduce the volume of water that can get through to the fixtures.

As the rust and deterioration factors worsen, the water can become dirty, foul-smelling and unfit to drink.

The most noticeable result of this build-up is low water pressure in the sinks, shower, washer, yard sprinklers, etc., leading to annoying situations such as being scalded or frozen in the shower when someone flushes the toilet or uses the water in another part of the house.

Hidden leaks can develop
inside the walls, in the attic and under the house, running the risk of major damage to your home.

DO YOU HAVE LOW WATER PRESSURE?
DO YOU GET SCALDED OR FROZEN IN THE SHOWER?
IS YOUR WATER UNFIT TO DRINK?

What To Do About It?

REPIPE WITH HARD COPPER


The answer to this problem is to have the old, galvanized pipes replaced with hard copper piping installed by professionals who specialize in this type of procedure, and the South Bay Area’s leading copper repipe specialist is Dempster Plumbing.

Dempster Plumbing’s technicians are highly trained professionals who specialize in copper repiping and pride themselves on quality workmanship.

What is repiping?
A Repipe is the process of replacing all existing domestic water piping by installing a new system throughout your home or building. Repiping is a system wide solution that allows you to take a shower, wash the dishes, water the lawn, wash the laundry, and use all faucets and fixtures at the same time without reduction in water pressure or fluctuation in water temperature. It gives you great water pressure throughout your home, improves delivery of hot water, eliminates water damage repair bills and saves money on water lost due to an inefficient system.

What are the benefits?
Copper repiping corrects all of these problems and saves you money! Hard copper pipe is safe, strong, and dependable.

  • Great water pressure
  • Clean, clear water
  • Safe and sound plumbing system
  • Environmentally efficient

Hard copper piping does not rust and will not develop the problems of galvanized piping or soft copper.

PROTECTING YOUR HOME AND FURNISHINGS

Dempster Plumbing’s crews understand your concerns. Any type of construction repair or maintenance work can be extremely disruptive to your busy lifestyle. They treat every job like they are working on their own homes. Their crews will keep your home as neat and clean as possible during the repipe. They will protect the floors and clean the house of debris each day before leaving. They will also test the system to make sure you have running hot water every night before our crews leave for the night.

ONSITE SUPERVISION
Your job will be assigned a Field Supervisor who will oversee the installation of your new copper pipes and provide technical assistance as needed. He will
be more than happy to answer any questions you might have.

PROFESSIONAL DRYWALL PATCHING
After the pipes are installed, Dempster Plumbing will professionally patch your walls, leaving a clean, smooth surface ready for texturing and painting.

Enjoy Excellent Water Pressure!

You will be amazed with the difference new copper piping will make in your home.

It will be the end of the discomfort, inconvenience and aggravation caused by galvanized steel water piping and soft copper slab leaks.

You will have an operational hard copper water pipe system that works efficiently without the need for any maintenance.

Request An Estimate Online!
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View Our License Info!

Note: Many of the reviews below are "filtered" and have not been "factored" into Dempster Plumbing's overall star rating on Yelp.

I was very happy with the work Bill did - he and his team were quick, clean and very helpful. He also recommended a *great* tiler. I will be using Bill and his team again for my other bathroom remodel.





2friends

1reviews

Rong L.

San Jose, CA

5.0 star rating
9/27/2009

I'm a new home owner without any knowledge on plumbing. After moved-in, I found my shower spout bad, and water became half and half when pulling up the splitter. I thought it would be easy to fix it as I watched some youtube videos and talked to several associates in the Home Depot before I bought a new spout and a 18" pipe wrench. But it's not that simple. After my dad twisted the spout off with the wrench, we found got the copper pipe broken. In no way, I could fix it without a professional help. After searching in http://yelp.com, I decided to give Dempster a try. He quoted in the phone and showed up half an hour later. He managed to fix the problem in 15mins and checked all my other faucets for free. The total charge is what he quoted plus the cost of the part. I'm 100% satisfied with his job. A year has been passed, and his work is still very good. I have recommended him to several friends.





0friends

2reviews

Tom T.

San Jose, CA

5.0 star rating
12/2/2009

From Yelp, I found Dempster. Called Bill, he came and checked out in less than two hours, gave me an quote, I mentioned YELP, he instantly gave me a YELP discount. Both Chris and William did a wonderful job, both of them are very experienced and friendly. Say no more. I give 5 stars. Tom





0friends

1reviews

Hal H.

San Jose, CA

5.0 star rating
12/9/2010

We needed new fixtures for three bathroom sinks, and an upstairs Roman tub that was completely surrounded by tile--panic! We thought we would need a tile company after the new fixtures were installed. Bill Dempster said our favorite words in the English language--NO PROBLEM! We'll just go in through the wall of the house! He explained it to us, and we believed it would be "no problem"! And it wasn't! On a wonderful Indian summer days, with temps of 80+ degrees, we had a plumber on a ladder for the better part of 5 hours, working through a hole in the side of our house. The hole was fixed; the fixtures were installed in the allotted time, and for the contracted price. The crew was great; tarps were placed everywhere they walked; we were delighted with the entire process. The only reason we gave 5 stars is that we couldn't give 6! H & M





82friends

79reviews

C. K.

Saratoga, CA

5.0 star rating
5/13/2009

I'm a real estate broker and have gone through a lot of plumbers. Until now, I haven't been able to refer any plumbers out to my clients because there wasn't any one that I could trust. Then, I was recently referred to Bill Dempster and his team by a client of mine. I was so impressed with the quality and finish work in my clients bathroom (which was practically a full remodel) that I called him to open up my bathtub walls to check out some water damage and install a shower enclosure. They did a great job of identifying the problem, salvaged the marble tiles and did a beautiful job patching, sheetrocking and reattaching the marble. They also did an amazing job putting the enclosure on. I have seen so many shotty jobs that I know it's not as easy as it seems. His team even noticed that the new glass door was slightly chipped so they took it back to Home depot for me and got a new one and the installation was spot on!! They vacuumed and cleaned and it was like they were never there! Thanks Bill, Vallen and Brian!! You guys are awesome! Recently, I just sent him to quote out another clients home of mine and he was very professional with the seller and gave me a fair assessment (even showed up before I did!) He returns your calls and shows up on time and does a superb job!





0friends

2reviews

Lori D.

San Jose, CA

5.0 star rating
8/11/2011

We had our copper repipe done through Dempster Plumbing. Very perfessional business. I had a few qoutes on pricing and these guy's topped the best pricing by far. Would highly recommend.





0friends

1reviews

Kurt K.

San Jose, CA

5.0 star rating
6/18/2008

I recently knocked my whole house down and rebuilt it from the ground up. The total square footage of the new house is about 3100 square feet which Bill Dempster & crew did every bit of plumbing work required (rough & finish). He is very knowledgeable and be it different brands of fixtures, instahot vs tank water heaters or even supply houses he provides good input as needed. Bill (owner) personally worked on the whole job and was there for every plumbing inspection to answer any questions that the city inspector had. Every single inspection passed the first time. I should also add that he clearly takes a lot of pride in his work and is quite confident that his work will pass any inspection the first time. As an owner builder this is very reassuring. Long story short, the guy is good and his prices are also good. I have referred him to a lot of people already and will continue to do so.





0friends

1reviews

George C.

Milpitas, CA

5.0 star rating
1/3/2008

My wife and I are very well satisfied with the quality of work that Bill and his associates provided us. After our own thorough research of information on proper copper repiping, Bill's wealth of knowledge and experience added to our reassurance that he is a master on this field. He explained to us the entire work as it progresses and even made extra repairs to other plumbing to bring up-to-code with no extra charges. We highly recommend him for any repiping/plumbing work.





0friends

5reviews

Elizabeth T.

San Jose, CA

5.0 star rating
6/11/2011

Bill Dempster and his crew came to our rescue again! The main sewer line leaving the house was clogged up like last year. Bill and crew came out that same day to clear it. Turns out we needed to get rid of some pervasive roots from our magnolia tree which were diagnosed by drain pipe video camera. After the diagnosis, they came out as scheduled and convenient for us, and put in a small section of new pipe in our front yard to replace the section the roots had tapped into. So fast, affordable, and professional. I trust Bill Dempster with all my plumbing needs, every time! Elizabeth T.





0friends

1reviews

Nicky S.

Los Gatos, CA

5.0 star rating
5/30/2008

Contacted Bill based on previous YELP reviews and he gave me a quote over the phone. He showed up on time the next morning and after reviewing the job reduced his quote since it was easier than he had expected. Bill was very efficient and professional and completed the job on the first appointment. I would definately use him again.





0friends

1reviews

Vick B.

Santa Clara, CA

5.0 star rating
10/13/2011

A colleague referred me to Dempter plumbing when I mentioned that I had a clogged dishwasher. Joe was the person who came over to fix it. He did a fantastic job finding the issue and fixing other leaks. Unfortunately the problem was in the float valve of the dishwasher and he did give me good deal of info on what was busted so that I don't get conned by the person who comes to fix the appliance. Highly recommend Dempster.





0friends

2reviews

Megan S.

San Jose, CA

5.0 star rating
9/23/2010

THANK YOU DEMPSTER PLUMBING!! We had a leaky kitchen sink, and called a large plumbing company in San Jose to come fix it. They arrived, took 5 seconds to look under the sink and told me I needed a new garbage disposal and that it would cost $665.00. I was shocked, and said I needed to talk it over with my husband. We asked around for a good plumber, and a good friend said she uses Bill Dempster. We called Bill, and the next day had a leak free sink for $89.00. The garbage disposal was perfectly fine, all they had to do was reseal the drain and tighten a few things up. Thank you Dempster plumbing for being so honest and for your quality work. We are loyal customers from now on and will recommend you to all of our friends! Thanks, again!





6friends

1reviews

Daniel C.

Milpitas, CA

5.0 star rating
4/10/2009

My water heater recently started leaking, and after contacting my home warranty company and having a bad experience with the plumbers they referred, I decided to contact Bill, who I found through yelp. Since he had the highest reviews, I decided to give him a call about replacing my water heater. I found that he was very knowledgeable and thorough about my inquiries about a tankless vs. tank water heater. I ended up going with a standard, tank water heater which he installed at a very competitive rate. Him and his crew did a very thorough, clean job. I had no problems with setting up an appointment with him or getting my questions answered. He was always very quick in responding to both emails and phone calls. I would highly recommend Bill for his exemplary customer service attitude, knowledge, and his ability to get things fixed quickly.





126friends

16reviews

Ryan K.

Campbell, CA

5.0 star rating
11/30/2011

I recently needed to replace my water heater, and with Thanksgiving only a couple days away I needed to do it FAST. After calling around to several places for blind quotes, I spoke with Bill Dempster at Dempster plumbing. He quoted a good price, without monkeying around at all. I was still hoping to find a better price, so I made more calls and even had one person come by to do an in person, formal quote. Not only was it more, it was almost two and a half times more. And it was all add-ons like "new flexline", "new TMP", "new ball valve", etc. When I told him about the better quote he assured me that there was no way it would hold up once the plumber showed up and saw my setup. Long story short, I nervously called Dempster back to see if I should expect add'l costs and was assured that I had nothing to worry about. When the guys showed up I was pleasantly surprised to see that EVERYTHING the other plumber suggested would be extra ... was included. They also did a great job positioning the unit better than it had been, and cleaned up quickly. All in all a fantastic experience.





32friends

6reviews

nicole c.

San Jose, CA

5.0 star rating
9/11/2008

This is the plumber you want! My first house, my first plumbing disaster: I backed the car into the water heater pipes. When I called, Bill (the owner) answered the phone, told me how to turn the water off, listened to me freak out, calmed me down, AND sent someone out (he was in New York himself) in an hour! Very professional! Thank You!