I had sewer back up problem and called Mr. Rooter on Sunday. One George arrived at scheduled time. Explained about snaking and hydro jetting. Scheduled service for Monday noon as it was already dark. George called and came ahead of schedule at around 10.40AM. Tried Hydro-jetting as well as snaking. Removed lots and lots of roots, but still could not open up the drain. His supervisor came and located the blockage which was very close to the city sewer line. Actually, the sewer line belongs to the county and he was not able to give an accurate estimate until he calls the county office and finds out their regulations etc. But, he did mention that couple of large trees need to be cut down, need to dig down and replace the broken (not sure how it was concluded, experience may be - will give him benefit of doubt) clay pipes with PVC and the cost will easily run upwards of 10K!!
My landlord sent this company over to the house and the plumber came in with a hand held snake.  He worked on the Drain for over an hour and could not clear it.  He left and we had to call another company that used a larger industrial snake.  Cleared my drain in 20 minutes.  I spent the whole morning at home yesterday and did not get my problem resolved and had to take the day off of work.  Such a bummer
I have contacted neighborhood plumber and Rooter company to service my property. I was contacted by… I have contacted neighborhood plumber and Rooter company to service my property. I was contacted by Gary the technician all I could say he was very professional and gave me multiple solutions to my problem. He did solve my problem and I'm very very satisfied with his services and his company I highly recommend neighborhood plumber for any plumbing repairs. I'm especially thankful 2 Gary the technician for his services. Once again I highly recommend the company neighborhood plumber and Rooter. Read more
Although we are a new company, our team of plumbing technicians has several years of plumbing industry experience. We only hire certified plumbers that are highly skilled and have extensive experience with all types of plumbing job and projects. We value each customer and work hard to earn your business and your trust. We want you to be 100% satisfied with our work and our products. The next time you are in the market for brand plumbing, water heaters or other water products or in need of an emergency repair, call Rhino Rooter Plumbing. We are the plumbing specialists!

7/30/2018 This customer confirmed via private message that the work was done by Mr. Rooter in PA, a different… This customer confirmed via private message that the work was done by Mr. Rooter in PA, a different franchise than Mr. Rooter in Western Washington. They are a separate company from us and not affiliated with our company outside of the name. We have referred his concerns to the correct franchise and they will be contacting the customer. Read more
Benjamin Franklin Plumbing Duncanville is the punctual plumber. We are part of a national network of conscientious, courteous, highly competent plumbing repair specialists. And while you’ll be seeing our trucks and hearing our radio ads coast-to-coast, all Benjamin Franklin Plumbing businesses are locally owned and operated by people who live in your community.
At Rocket Rooter Plumbing, LLC, we are proud to be the preeminent septic tank pumping company in Lake County. Our highly experienced and skilled professionals can care for your septic system at all stages of its service life. We can install, repair, pump, clean, and replace your septic tank for you. With our help, you can always rest assured knowing that your septic system is properly cared for.
We know that sewer jetting might not be the most glamorous household task, but in order to have clean pipes, we highly recommend sewer cleaning be done from time to time. We use a high pressure water jet at 4200 psi in a 360 degree rotation to completely remove all grease, sludge, dirt, debris, and even tree roots, from the walls of your sewer system. By doing this we can assure that your sewer lines are flowing properly.
One of the most common plumbing problems is clogged drains. If your drains and pipes are obstructed, your plumbing and septic system cannot operate effectively. Our Lake County drain cleaning contractors can help you with this frustrating issue. We use the most advanced techniques and equipment in order to completely remove the obstruction from your system. After our drain cleaning services, your plumbing fixtures and appliances will operate in the best possible manner.

It’s time you receive the exceptional plumbing services you deserve. Bud’s Plumbing & Repair Service is here for you 24/7 with the right solution. Know what to expect with our upfront pricing method, honest recommendations, and transparent way of doing business. Call us today at (812) 618-9638 for your free estimate (available during our regular business hours).


Before starting any work, we study the issue and perform comprehensive inspections to properly diagnose the problem. Once we have pinpointed the source of the issue, we will discuss your options with you. We try to stick to repairs if possible, and avoid recommending replacements unless your system or unit is extremely outdated. By focusing on repairs instead of replacement, you save money and enjoy an improved plumbing unit for many more years to come.
Having plumbing work done, whether it's for your home or business, can be incredibly expensive. That's why it's vital for you to ask a plumbing service the right kind of questions before you hire them. You want to do as much due diligence on your part as possible to get a professional who will not only do quality work but also charge you a fair price for it.
I seriously can not give Alex enough stars!! We had a huge main log clog and he was able to come out quick, bring everything back to tip top shape AND do it for a super reasonable price. He is probably one of the most honest and trustworthy plumbers I have ever met, and I have plumbers in my family! Give him a call for your plumbing needs, I promise you won't be disappointed
I had a clogged main drain pipe. Mr. Rooter came out and unclogged it, but let me know it was going to clog again since all they could do was push through the clog, but not jet the main pipe since we didn't have a "clean out." We got a quote from Mr. Rooter, which seemed high (and was, based on after the fact research), but when the drain clogged a few days later we needed to get the system taken care of, and didn't have time to get other quotes (I tried, but couldn't get anyone else out that day for comparison). Anyway, Mr. Rooter did the work relatively quickly (it took them longer than they thought due to difficult soil), and their folks were friendly. Everythings better now in drain-town. If Mr. Rooter's price was not 2-3x what it should have been my review would be much better. I feel like (and I guess this is the way some plumbers work) that they charged what they could, not really what it should cost (with profit, of course).

Hi Kenneth, We would be happy to get you connected with a pro for your project. You can submit a service request on our website: http://www.homeadvisor.com/, or browse reviews for local water heater pros here: http://www.homeadvisor.com/c.html. We can also have a project advisor reach out to assist you if you send your contact information to [email protected] –HASupport
I had a clogged main drain pipe. Mr. Rooter came out and unclogged it, but let me know it was going to clog again since all they could do was push through the clog, but not jet the main pipe since we didn't have a "clean out." We got a quote from Mr. Rooter, which seemed high (and was, based on after the fact research), but when the drain clogged a few days later we needed to get the system taken care of, and didn't have time to get other quotes (I tried, but couldn't get anyone else out that day for comparison).
If there’s a plumbing problem in your home, Abacus Plumbing will fix it. Abacus plumbers are background-checked, highly trained, and state licensed; therefore, you’ll be getting a quality technician to service your home’s plumbing network. Abacus plumbers have years of experience repairing residential plumbing systems; there isn’t an issue they have not tackled, including:

I had 207 Plumbing come to fix a leak in my ceiling.  It's a terrible, terrible company to do business with.  He came and fixed a broken pipe in the ceiling, and I asked him to check the rest of the pipe to make sure that nothing else was broken, he said everything was OK and charged me $219.00 for 45 minutes and left.  Never cleaned up his mess.  I went to clean up the mess after he left and found there was more damage to the pipe.  I called him to come back, which he did.  He looked at the water coming down from the ceiling, into a light fixture and said he had another job to go to and couldn't come back until next week.  He also wanted to charge me $350.00 to come back.  I told him that was too much and he said he would make an exception and only charge me $219.00.  Now I have major damage done to the ceiling, the light fixture and the floor.  All of this could have been prevented if he had stayed and fixed the problem.  I will NOT hire him again.


Drain issues are common in the Denver area, but we can put a stop to your problems quickly. We offer a variety of drain services that not only fix current problems but prevent future issues. Our state-of-the-art video inspection service allows us to identify issues quickly, and then we come up with the best plan for your needs. We quickly clean drains, repair sewer lines, and more. Your water will drain freely once we finish the job.
Neighborhood Plumber & Rooter is awesome! I had a leaking water heater and submitted a claim to my home warranty service in the morning. A few hours later, Gary called and said he was in the area and could come by, but I was already at work. We made a tentative plan for him to come by in the afternoon if his schedule permitted, which fortunately it did. He was able to fix the problem with no issues. What impressed me most was Gary's professionalism and friendliness. I felt like he went out of his way to accommodate us even under short notice. He is the definition of customer service and I think I've found our go to plumber. If you're looking for friendly and honest service, make sure you give Gary at Neighborhood Plumber & Rooter a call. I even recommended him to our NextDoor community.

They were called in by American Home Shield, and they wouldn't come for 2 day.  When they finally came out they refused to do the work because it was "too clogged, and there was water in the sink". They gave a 250 dollar quote saying AHS wouldn't cover this type of repair.  We had AHS send a different plumber and the new plumber was able to get the sink unclogged (we also put baking soda/vinegar down the sink which seemed to help things)


Abacus’ plumbers are also experts at sewer & pipe repairs, shower & tub repairs/installations, kitchen & bath faucet repair/installations, sink repairs/installation, plumbing inspections, water filtration, water softening, garbage disposal repair/installation, toilet repair/replacement, drain cleaning with drain camera inspections, leak detection/repair, plumbing repair/installation and back flow prevention for all Houston Texas homes & commercial business properties. Need an annual Plumbing Inspection on all your home’s plumbing systems? Ask about the Abacus CLUB. The CLUB membership will give you the peace of mind that your plumbing system is working at top efficiency. Our licensed plumbers will conduct an inspection of your home to look for and fix any potential plumbing problems. 
plumbers must be asked directly what they charge hourly and if that is in addition to a service charge. The two are separate and I think they have gotten away with outrageous charges because of the potential of water damaging homeowner structures.   I had a plumber (not Home advisor) come and replace a part in my kitchen sink that was under warranty---the spray nozzle had been leaking...He charged me $85.00 for 15 minutes of work and I will never use Mr King again. 
Tired of working with plumbers who show up late or do a haphazard job? Finding a dependable contractor doesn’t have to be difficult. At Rooter MD Plumbing & Heating our local Livonia, MI plumbing, heating and cooling technicians are committed to your safety, comfort, and peace of mind. When you work with us you can expect nothing short of exceptional service – from an accurate diagnosis to careful workmanship to personal attention throughout the service.
TLDR - My $75 American Home Warranty service turned into $200 of repairs when Gary ripped a leaky faucet from my wall and "discovered" that the pipe was misaligned. Like most other people here, I too had the misfortune of being forced to use Neighborhood Plumber due to my home warranty. My service man was Gary and he was very standoffish at first, thinking that I only had minor repairs - garbage disposal service, switching hot and cold faucets and a leaky tub faucet. For the record, he contacted America Home Shield while he was repairing my tub and said it took 30 minutes to reset the garbage disposal (2 minutes) and another 30 minutes to switch the hot and cold faucets (5 minutes) - I would never trust them to do my work again. Then Gary got real "chummy" when he saw an opportunity to make additional money. To "fix" my leaky tub faucet he "accidentally" ripped it from the wall which required him to first cut a hole into my newly painted bedroom and reattach a pipe. At this point he "discovered" that the pipe was off center and would require either breaking the tile in my bathroom which would cost me $125 or redirecting the pipes to the correct position, costing me $175 - neither of which would be covered by my warranty. You can see the second picture where he has enlarged the hole AND BURNED A SPOT ON MY WALL!!! Since I already didn't trust Gary, I called AHS to confirm that these would not be covered. While I am doing this, Gary is sitting there cursing at the people who made my house and trying to make me feel like he was on my side. "You really don't want to have pipe tension" "This is the first time in my 15 years that I have seen this" "90% of the time it is a simple fix" Since I am in for at least another $125 and I now don't have a working tub / a gaping hole and burn mark in my bedroom, I tell him to do it right and just repipe. At this point, he retracts (maybe seeing that it would be a lot more work for only $50) and says that we should really just break the tile. I just want the guy out of my house, so I give him the green light on the $125 fix. This "$125 job" takes AT MOST 2 minutes of him tapping away with a screw driver. Then, he asks me to help him move the pipe over with my bare hands while he uses the blow torch on the other side. I end up burning my hands and he fixes it in another 10 minutes. So $125 for 12 minutes - awesome. The cherry on top, is that throughout this whole experience Gary has asked for and used a TON of my household supplies. From the two towels (one of which you can see in the first picture) he used as drop cloths, the windex he used to not burn the wood with his torch, my wire hanger he bent to measure the space and all of the paper towels, tissues and toilet paper he wiped his hands with. I mean ALL of my other contractors brought their own supplies, how unprepared and unprofessional are these people??!! Finally, again trying to be chummy, he says that my upstairs toilet rocks a little and he would hate to see it break and spill sewage. While he can't fix it right now, he HIGHLY recommends that we get a single plumber as our go-to guy so that they can know the history of the home. Sorry Gary, you aren't going to be that guy.

If a plumber needs to do major repairs to your house, the work could call for a permit. You'll want this since a permit provides added assurance that the work is done correctly. Having this added measure in place means an inspector will check the work your contractor or plumber does to ensure he or she did the job correctly. If you ever plan on putting your house or commercial building on the market, a real estate agent and prospective buyers will also want to check any large work you did to make sure it was done properly.
*Purchase and installation of new water heater required. Valid at participating ARS® Network locations. Not valid for third party, new construction or commercial customers, with any other offers, discounts or prior sales. See service center for details. Coupon required at time of service. Void if copied or transferred and where prohibited. Any other use may constitute fraud. Cash value $.001. Offer expires 11/30/2018.
I had a problem with my hot water heater. I called the local franchisee of MR. Rooter. My first mistake was that I didn't check the reviews. With a lot of bad reviews I would have known better and stayed away. That was my fault. I blame myself. 2 people came out to repair my water heater. I don't know why they would send 2 people but I should have realized that something was wrong. I showed them the water heater and within 10 seconds they started with "your water heater is old and it's not worth repairing"... Wait a second. I called for a repair and now they are trying to sell me a new water heater. They never even bothered to look at the heater or try to determine what's the matter. They never bothered to bend down and light it or try and do anything. They saw that it was 1 year past the warranted date and then went into selling mode.
What impressed me most was Gary's professionalism and friendliness.  I felt like he went out of his way to accommodate us even under short notice.  He is the definition of customer service and I think I've found our go to plumber.  If you're looking for friendly and honest service, make sure you give Gary at Neighborhood Plumber & Rooter a call.  I even recommended him to our NextDoor community.
For fast, dependable plumbing service every time, contact Rhino Rooter Plumbing, Southern California's most trusted plumbing company. Our highly trained and knowledgeable staff can handle all of your plumbing needs. Your professional Torrance Plumber is highly trained and available to assist with your plumbing or emergency plumbing needs. This includes everything from plumbing repair, drain de-clogging, leak repairs, sewer and trenchless serves, water-based appliances, gas lines, and other specialized jobs. With our Torrance plumbing company you will receive the highest level of customer service and only top of the line first rate products that are durable and will last for years to come.
At Rocket Rooter Plumbing, LLC, we are proud to be the preeminent septic tank pumping company in Lake County. Our highly experienced and skilled professionals can care for your septic system at all stages of its service life. We can install, repair, pump, clean, and replace your septic tank for you. With our help, you can always rest assured knowing that your septic system is properly cared for.
If you’re looking for plumbers in Birmingham AL you can rely on, you’ve come to the right place. At Latta Plumbing Service, we have trained technicians to use the latest tools on the market. We have equipment to handle everything from drain cleaning to trenchless sewer repair. Our company can take care of all of your residential and commercial plumbing services quickly and efficiently.
“Don’t go to the Yellow Pages to find a plumber,” says Berkey’s Bill Stevens. “It’s like guessing lottery numbers. Anyone can make an appealing ad, but that doesn’t mean they are legitimate. In this industry, it’s easy for a plumber who develops a poor reputation to advertise under a different name. They come and go.” Even searching for someone online may end up being a scam using fake reviews. Instead, look for a plumber who is well-established in your community. Check the Better Business Bureau and read customer reviews at sites such as HomeAdvisor, Angie’s List, or Citysearch. Local contractors or plumbing fixture stores can also refer you to a quality plumber, according to Grady Daniel, who owns a plumbing company in Austin, Texas. “Most of these firms won’t work with bad plumbers.” Or simply ask your neighbors for a referral. A trusted plumber that consistently delivers quality service does not remain a secret for very long.
It was a bad experience with Mr. Rooter Plumbing of Las Vegas. Over the phone, I was quoted $79 to fix a clogged kitchen sink. The plumber was scheduled to arrive between 3-5pm so I took off work two hours early. Kenneth arrived at the door at 4:30pm and the price switched to $225 which was a total rip off. I told the plumber I was not happy but he didn't seem to care. He said "go ahead and write a bad review" so here it is. Needless to say I will never use nor recommend Mr. Rooter.
"Called the shop and tried to set up an appointment as soon as I could. The customer service rep said she would put me on the list in case someone became available that day. Dan showed up later that day. Listened to my long story and explained what he was going to do in detail. Was up front and honest with his evaluation, I felt. Kept the work area clean and professional. Did not mind me asking questions. Took time to analyze and suggested preventative maintenance tips. Would recommend M.D.."
Homeowners in and around Boise, ID count on Master Rooter Plumbing for superior, home plumbing solutions. We’re a full-service plumbing company with expert contractors that are available 24 hours a day to assist you. We offer a range of plumbing services, including pipe cleaning, pumping service, septic system installation and maintenance, grease trap cleaning, water heaters installation and service, and water softener system installation and repair. Call 208-955-8533 today to request a plumber.
I had an outside drain plugged up and called Mr. Rooter on a Friday afternoon and they scheduled a service tech the following morning. Ryan showed up on time, took a look at the issue (tree roots as I suspected) and provided an estimate before starting any work. Ryan was courteous, professional, and knowledgeable. He took his time to make sure the roots were thoroughly cleaned out which I appreciated. I would not hesitate to use Ryan and Mr. Rooter again for any future plumbing projects.

Never fear, Benjamin Franklin Plumbing Duncanville is here for you. No matter what your emergency plumbing needs may be, our Duncanville plumbers are trained to swiftly and efficiently handle a wide variety of emergency plumbing repairs. Don’t hesitate to pick up the phone if you feel that you have an emergency plumbing situation on your hands. We’ll be waiting to come to the rescue.
Called Mr. Rooter on 11 Dec to request technician to unclog our drain. Technician arrived I explained the kitchen sink, dishwasher and washing machine would not drain and had standing water. He quoted me 200.00 to unclog and I agreed. After about 15 minutes he provided me an update stating that I had a broken pipe under my house. I asked for a quote and he came back with 10,700. Since I was in the middle of planning my Mother's funeral and had company on the way I explained that a temporary fix would have to work for now and I would get back with him later on the broken pipe. I paid him 200.00 and he left. The sink had drained, but the dishwasher and washing machine still had standing water. I turned the sink on and it would not drain.
We needed a sewer scope to include with the documentation for selling our house. The Company needed to reschedule and knocked $50 off the $250 they charge for this service. So far, so good. The plumber shows up and finds our clean out is inaccessible due to a stripped screw holding the cover in place. He decides the best route is to remove the toilet and perform the scope from there. He is super polite and didn't charge us for the additional effort required. Still, so far, so good. The scope work is performed and we are told there is a small root intrusion in the line. Now the fun begins... how small is small and how far out is it located? "We can't tell you, we don't know - you can see the video". We explain that we need a accurate report for our documentation. The plumber then prepares our bill and results but includes a reference to $5300 of recommended work. We have had no issues with this sewer. Adding a recommendation to the scope is not going to look good to a potential buyer. We ask for the recommendation to be separated out from the bill. Okay, they can do that. But, the invoice still shows the reference to the recommendation. We did not ask for a recommendation, just the scope. The plumber seemed to understand but referred it to his supervisor. The supervisor doesn't seem to understand. All they appear to want is to attach this $5300 to somebody - either us or a potential buyer. Did I mention that there are no problems with our sewer. We merely want full disclosure and the buyer can go from there. This recommendation that Mr. Rooter refuses to remove is a scare tactic that could affect the sale of our house. Thank goodness we're only out $200 and totally irritated with trying to explain this issue over and over again to only be stone walled. The solution is to use a different scoping service and make sure they understand what we need before we hire them. Now, my personal rant. Listening to their male centric misogynistic phone hold advertising is disgusting. Even though my husband handled this issue, I'm a trades woman and am skilled in construction and know more than average. Why Mr. Rooter doesn't supply their plumbers with a screw extractor or the skills required to simply remove a stripped screw is beyond me... Why the company can't provide a simple scoping of the line without an upsell is frustrating. We will not recommend their services or use them in the future. Update: Just got the written "estimate". Not even close to what we asked them to do. This place is only going to try to get into your pockets as deep as they can. We asked for an accurate scope of the sewer line (that's what we paid for).
Whether your home needs a simple plumbing repair, sewer line repair, clogged toilet repair, or complete plumbing installation services, we have the expertise and knowledge to get the job done right. Our reliable 24/7 emergency service means that a friendly plumbing technician will visit your home and help you quickly. A regularly scheduled maintenance service from Peterman Heating, Cooling & Plumbing, Inc. can help keep your home’s plumbing system running smooth to help avoid expensive future repairs.
It's best to hire a plumber to do a simple, everyday maintenance task for you first so you can judge his or her work. If you're happy with it, save their contact information so you'll have them on hand in case you need an emergency repair. This can spare you the extra worry and anxiety of having to track down a plumber if you have a broken pipe. Additionally, it can save you from being overcharged.
Leaks don't go away. They simply turn into bigger leaks. The difference between a small leak and a large leak is how much damage it does to your home or business. If you observe a leak in your faucet, tub, pipes or even connections with your dishwasher or other appliances, call us right away in order to avoid needles flooding. Most leaks generally need a simple re-piping or a seal replacement. In some cases we may have to repair a tear. But no matter what the nature of the repair is, we'll fix it fast.
Since I am in for at least another $125 and I now don't have a working tub / a gaping hole and burn mark in my bedroom, I tell him to do it right and just repipe. At this point, he retracts (maybe seeing that it would be a lot more work for only $50) and says that we should really just break the tile. I just want the guy out of my house, so I give him the green light on the $125 fix. This "$125 job" takes AT MOST 2 minutes of him tapping away with a screw driver. Then, he asks me to help him move the pipe over with my bare hands while he uses the blow torch on the other side. I end up burning my hands and he fixes it in another 10 minutes. So $125 for 12 minutes - awesome.
Also known as a drain auger, a drain snake is a coiled device around ¼-inch thick. To use a drain snake, put the end into the entrance of the drain. Turn the handle to force the snake deeper, using extra pressure to force it through the bend in the pipe. Keep turning until the snake hits the clog, then either pull the snake and remove the obstruction or force it through. Once the snake is out of the drain, run the water on full blast for a few minutes to ensure the obstruction is completely removed.
We offer thorough drain cleaning service that completely cleans out your residential or commercial plumbing system. Although there are some superficial drain clogs that you can clear out yourself, most clogged and blocked drains require the work of a professional in order to solve issues with long-term solutions. DIY chemicals are toxic, eat away at your pipes, and rarely solve the real problems. We use eco-safe chemicals that completely clean the inside walls of your pipes and completely get rid of all material-gathering blockage. We clear out all drains in kitchens, bathrooms, tubs, showers, floor drains and other drains.
With all the freezing weather our city has had, my dad had a problem with his water pipes and I told him to call BL plumbing service. From the first phone call he made, the company gave him the most remarkable customer service. The dispatcher promptly made an appointment for him and within a couple of hours 2 workers were at his home working on the problem and fixing his pipes! The workers were very kind, helpful and extremely courteous to my dad. Not only was the work done quickly, but also, the cost of the repair was more than fair. I am so grateful for the service that was given to my dad and I will highly recommend this company to anyone needing plumbing work.

For fast, dependable plumbing service every time, contact Rhino Rooter Plumbing, Southern California's most trusted plumbing company. Our highly trained and knowledgeable staff can handle all of your plumbing needs. We cover a wide range of plumbing work. This includes everything from plumbing repair, drain de-clogging, leak repairs, sewer and trenchless serves, water-based appliances, gas lines, and other specialized jobs. With our plumbing company you will receive the highest level of customer service and only top of the line first rate products that are durable and will last for years to come.
“My kitchen sink was clogging up, so I made an appointment with Mike Counsil plumbing. Yobani and another technician came to put an auger/snake through the wall, replaced my sink pipes and also fixed a leaky shower in the master bathroom. Yobani and his team were all very professional, knowledgeable and CLEAN!! They all wore booties, brought in a carpet to lay on my kitchen floor so as not to get debris everywhere. They weren’t able to fix the kitchen sink because it was determined to be a main line issue down in the garage (not my personal condo unit) that was causing the back-flow. So they did not charge me for the snake/auger services as it did not resolve the problem. They are a bit pricier, but I could see where my extra dollars were going for their service.”
Most plumbers wont mess with the septic tank. We deal mostly with components inside the house. Did you have a vent pipe in the yard (often looks like a candy cane made of PVC) before the repair but not after? If all he did was replace the line it shouldn't cause a smell inside the house. All plumbing fixtures inside the house should have properly functioning traps. Those traps would create and maintain a water seal against the sewer gases. You should have at least one vent through the roof to equalize pressures within the drainage system. This prevents positive pressures within the system (caused by fixtures discharging into the lines, ie toilet flush) from pushing gas out through the traps, and negative pressures (the waste in line will pull air behind it like your finger over the end of a straw) from sucking water out of the traps.
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