Remodeling a kitchen or bathroom? Your plumbing plan matters more than most people expect.
A great remodel looks good on day one—and still works flawlessly five years later. In Meridian, plumbing remodel success usually comes down to the unglamorous details: how drains are vented, how supply lines are routed, whether shutoff valves are accessible, and whether the work is permitted and inspected properly. Cloverdale Plumbing has served the Treasure Valley since 1953, and we’ve seen the difference between “pretty” installs and dependable systems that stand up to daily family life.
What counts as a “plumbing remodel” (and why it’s different than a simple swap)
Homeowners often think “remodel plumbing” means replacing a faucet or toilet. Sometimes it does—but many projects quickly cross into true remodel territory when you:
• Move a sink, shower, tub, toilet, or laundry location
• Change drain sizes, add new drains, or tie into an existing branch line
• Modify venting (common when relocating fixtures or adding a second vanity)
• Add a gas line for a range (or change water heater type)
• Convert a tub to a shower (especially curbless) and change the trap/line layout
These changes affect how your entire system breathes (vents), drains, and handles peak usage—like when kids are showering while the dishwasher runs.
A practical rule of thumb
If your remodel changes anything behind the wall or under the floor (not just the trim and fixtures), plan for a plumbing permit and inspection process through the City of Meridian’s Building Services. Meridian’s code adoption references the Idaho State Plumbing Code (ISPC). This is part of how the city protects homeowners from hidden failures like slow leaks, sewer gas issues, and unsafe cross-connections.
Local note: Meridian Building Services handles plumbing permits and inspections, and Meridian has adopted the 2017 Idaho State Plumbing Code (as amended). Sources: City of Meridian Building Services and Meridian Code of Ordinances.
Common “remodel regrets” we help Meridian homeowners avoid
Most plumbing remodel problems aren’t dramatic on day one. They show up later as odors, slow drains, noisy pipes, or repeated clogs. Here are issues that often trace back to planning:
1) “We moved the sink, and now the drain gurgles”
When a fixture is relocated, venting has to be addressed. If the system can’t pull air correctly, you can get gurgling, slow drainage, and trap siphoning (which can allow sewer odors into the room).
2) “Our new shower looks amazing, but it drains poorly”
A curbless shower or linear drain can work beautifully—if the slope, trap placement, drain size, and layout are designed correctly. Small miscalculations can mean standing water, recurring hair clogs, or water getting where it shouldn’t.
3) “We didn’t add shutoffs, and now every repair is a big deal”
Remodel time is the easiest time to add (or replace) accessible shutoff valves. This can turn a future faucet repair from a water shutoff at the street into a simple, contained job.
4) “The drains keep clogging after the remodel”
Sometimes the remodel reveals an older main line that’s already restricted by grease, scale, or root intrusion. That’s where professional drain cleaning—or hot water jetting—can restore full flow before the new fixtures go into heavy use.
Did you know?
Household leaks can waste around 180 gallons per week on average. A remodel is a perfect time to proactively replace aging shutoffs, supply lines, and fixtures so you’re not relying on decades-old connections behind a new vanity or wall. (EPA WaterSense data)
A homeowner-friendly checklist for planning a plumbing remodel
Use this list when you’re meeting with your plumber and your remodeler. It helps keep scope, timing, and inspection steps clear.
| Planning Item | Why It Matters | What to Decide Early |
|---|---|---|
| Fixture locations | Moving fixtures changes drain/vent routes and cost | Keep the toilet/shower near existing stacks when possible |
| Shutoff access | Faster, safer future repairs | Add/replace angle stops, consider access panels where needed |
| Drain condition | Old lines can limit new fixture performance | Plan for drain cleaning or hot water jetting if slow/recurring clogs |
| Water heater capacity | New showers/tubs can increase hot water demand | Confirm recovery rate and sizing before adding high-demand fixtures |
| Permits & inspections | Protects resale value and ensures code-compliant safety | Coordinate permit timing with demo/rough-in/wall close-up |
Quick “Did you know?” facts that can influence remodel choices
• Standard showerheads are commonly rated at 2.5 gallons per minute, while EPA WaterSense-labeled showerheads are certified at 2.0 gpm or less. (EPA WaterSense)
• Showering accounts for about 17% of residential indoor water use. (EPA WaterSense)
• Replacing old toilets with WaterSense-labeled models can save an average family about 13,000 gallons of water per year. (EPA WaterSense)
Meridian-specific guidance: permits, inspections, and scheduling your rough-in
In Meridian, plumbing permits and inspections are handled through the City’s Building Services. If your remodel includes moving plumbing, adding new lines, or modifying drainage/venting, the safest approach is to treat permits as a standard part of the job—not a last-minute scramble.
A smooth timeline usually looks like this:
• Planning: confirm fixture layout, drain routes, venting approach, and any special features (curbless shower, pot filler, laundry relocation).
• Demo: open walls/floors so the rough plumbing can be installed correctly.
• Rough-in + inspection: schedule inspection before closing walls.
• Finish: install fixtures, trims, and final connections.
Why inspections help homeowners (not just the city)
A good inspection moment is when a small issue is easiest to fix—like a vent alignment, a cleanout location, or a support detail—before tile and cabinetry are installed. That’s cheaper, cleaner, and far less stressful.
Source references for local process and code adoption: City of Meridian Building Services and Meridian’s municipal code adoption language.
How Cloverdale Plumbing supports remodel projects (without slowing them down)
Remodel work needs coordination. Homeowners are juggling cabinet lead times, tile schedules, and family routines—and plumbing has to hit its windows: rough-in and finish. Cloverdale Plumbing helps Meridian homeowners and contractors by focusing on:
• Clear scope upfront (what’s changing, what stays, what’s being reused)
• Practical recommendations on layout to reduce future clogs and service headaches
• Drain cleaning or hot water jetting when existing lines are limiting performance
• Quality fixture installation with attention to shutoffs, supply lines, and leak prevention
• Support for residential and commercial remodel plumbing across the Treasure Valley
Related services you may want to bundle with a remodel
If your project is already opening walls or upgrading fixtures, it’s often the ideal time to consider: water heater evaluation (capacity/recovery), pipe repairs or partial repipe in high-risk areas, and water treatment/softening options.
Ready to plan your Meridian plumbing remodel with fewer surprises?
If you’re remodeling a bathroom, kitchen, laundry, or adding a new fixture layout, a short planning call can save time and prevent rework later. Share your layout ideas and timeline—Cloverdale Plumbing can help you map the plumbing scope, coordinate the rough-in window, and keep the project moving.
FAQ: Plumbing remodels in Meridian, Idaho
Do I need a permit to remodel plumbing in Meridian?
If your remodel involves moving fixtures, adding new lines, or altering drains/vents, you should plan on a plumbing permit and inspection through the City of Meridian Building Services. Simple like-for-like fixture swaps may be different, but it’s best to confirm before work begins.
When should plumbing be done during a remodel?
Most projects have two plumbing phases: rough-in after demo (before walls close) and finish after tile/cabinets/paint. Planning the rough-in window early prevents delays.
Should I clean my drains before installing new fixtures?
If you’ve had slow drains, backups, or recurring clogs, addressing the line condition first can protect your new shower, tub, or kitchen sink performance. Options range from standard drain cleaning to hot water jetting for heavier buildup.
Is it worth upgrading to WaterSense fixtures during a remodel?
Many homeowners choose WaterSense-labeled toilets and showerheads to reduce water use without sacrificing performance. EPA notes WaterSense-labeled showerheads are certified at 2.0 gpm or less, and toilet replacements can save significant water annually for many families.
How can I keep my remodel from turning into an emergency?
Before demo, locate the main shutoff, confirm all fixture shutoffs work, and replace questionable angle stops and supply lines. If your water heater is already near end-of-life, consider addressing it proactively while the home is already in project mode.
Glossary (helpful remodel plumbing terms)
Rough-in
The behind-the-walls/under-floor plumbing phase before drywall and finishes go in. This is when drains, vents, and supply lines are set.
Venting (plumbing vent)
A system that allows air into drain lines so water flows smoothly and traps keep sewer gases out of the home.
Trap (P-trap)
A curved section of drain under sinks/showers that holds water to block sewer odors from entering your home.
Cleanout
An access point on a drain line that allows a plumber to clear blockages without opening walls or removing fixtures.
Hot water jetting
A professional drain-cleaning method that uses high-pressure hot water to remove grease, scale, and buildup from pipe walls.
WaterSense
An EPA program that labels independently certified water-efficient fixtures (such as toilets and showerheads) that meet performance standards.
If you’re planning a plumbing remodel in Meridian or anywhere in the Treasure Valley and want a second set of experienced eyes on your layout, reach out to Cloverdale Plumbing.
Emergency Plumbing in Boise, ID: What to Do First (and When to Call a Pro)
September 21, 2026Fast, calm steps that protect your home while help is on the way
Plumbing emergencies are stressful because they feel urgent (and they are). The good news: most damage happens in the first few minutes, and a short checklist can prevent a small problem from turning into soaked flooring, ruined drywall, or a sewage backup. Below is a Boise-focused guide from the team at Cloverdale Plumbing—serving the Treasure Valley since 1953—so you know exactly what to do, what not to do, and when to pick up the phone for 24/7 emergency plumbing.
Your 5-Minute Emergency Plumbing Plan
When something is actively leaking, overflowing, or backing up, focus on stopping water, protecting people, and preventing contamination.
1) Shut off water
If the leak is at a fixture (toilet, sink, dishwasher), close the local shutoff valve first. If water is still flowing or you can’t find the local valve, shut off the main water.
2) Shut off power or gas (when appropriate)
If water is near electrical outlets, a panel, or a water heater, keep safety first. Don’t step into standing water to reach a switch. If you suspect a gas issue, leave the area and call your utility emergency line.
3) Contain and document
Use towels, buckets, and a wet/dry vac (if safe). Snap a few photos for insurance. Move items off the floor, especially around bathrooms, laundry rooms, and water heaters.
4) Stop using drains if there’s a backup
If a toilet is overflowing or multiple fixtures are backing up, stop running water anywhere in the home. A mainline issue can worsen quickly if you keep using sinks, showers, or laundry.
5) Call a licensed plumber for diagnosis (not guesses)
Emergency plumbing is about quick stabilization and a correct repair plan. A professional can confirm whether you need a repair, replacement, drain cleaning, or a camera inspection—before you pay twice for the wrong “fix.”
Common Emergency Scenarios (and the smartest first move)
| Emergency | What to do immediately | What NOT to do | Likely service needed |
|---|---|---|---|
| Burst pipe / active leak | Shut off main water, open a faucet to relieve pressure, protect nearby electrical. | Don’t rely on tape, clamps, or “temporary” DIY fixes on pressurized lines. | Pipe repair or replacement |
| Water heater leak | Turn off cold supply to the tank; if leaking heavily, shut off main; avoid standing water. | Don’t ignore slow leaks—water heaters can fail suddenly. | Water heater repair or installation |
| Overflowing toilet | Turn the toilet’s shutoff valve clockwise; stop flushing; contain water. | Don’t keep plunging if sewage is backing up elsewhere. | Drain cleaning / mainline clearing |
| Multiple drains backing up | Stop using water throughout the home; call for emergency drain service. | Avoid chemical drain cleaners—they can damage pipes and complicate professional clearing. | Camera inspection + snaking or hot water jetting |
| No water / frozen line risk | Check if neighbors have water; gently warm likely freeze points; keep heat on. | Don’t use open flame to thaw pipes. | Freeze-thaw service + leak check |
If you’re unsure which shutoff to use or what you’re seeing, start with safety and call a plumber. A short phone conversation can save hours of cleanup.
Why Boise homes see repeat plumbing “emergencies”
A true emergency can happen anywhere, but in the Treasure Valley there are a few common patterns:
Hard water wear-and-tear
Boise-area water is commonly described as hard to very hard, which can contribute to scale buildup in fixtures and water heaters. Scale can reduce efficiency, shorten appliance life, and increase the chance of leaks when a unit is already aging.
Drain line buildup (grease, soap, and “flushable” wipes)
Many “emergency” clogs are the result of months of buildup. The first big warning is often a slow drain—then one day it becomes a complete stoppage.
Seasonal cold snaps
Frozen lines happen most often in vulnerable areas: exterior walls, crawl spaces, uninsulated garages, and hose bib feeds. If a pipe freezes, it can split—then leak when it thaws.
The goal isn’t to “worry more”—it’s to know what to watch for and schedule preventative service before the weekend or holiday surprise.
Quick “Did You Know?” Facts (that help you avoid a 2 a.m. call)
Your shutoff valves matter: knowing where your main water shutoff is (and making sure it turns) can be the difference between a quick cleanup and major water damage.
A “one fixture” clog is different from a “whole house” clog: one slow sink often needs a localized clearing; multiple fixtures backing up points to a mainline issue.
Hot water jetting isn’t just “stronger snaking”: snaking can open a path through a clog; jetting can scour buildup off pipe walls—useful when clogs keep returning.
Step-by-Step: What to do during the most common emergencies
If a pipe is leaking under a sink
Step 1: Turn off the hot and/or cold shutoff valves under the sink.
Step 2: Place a bucket underneath and dry the cabinet base.
Step 3: If the leak continues (or the valves won’t close), shut off the main water.
Step 4: Call for repair—small drips can indicate worn supply lines, failing stops, or a cracked trap.
If your toilet is overflowing
Step 1: Turn the toilet shutoff valve (behind/near the toilet) clockwise.
Step 2: Remove the tank lid and lift the float to stop filling (if needed).
Step 3: If other drains are gurgling or backing up, stop using all water and call for mainline service.
Step 4: Avoid chemical cleaners—especially if the toilet bowl is already full.
If multiple drains are backing up (possible main sewer line clog)
Step 1: Stop all water use immediately (dishwasher, laundry, showers, sinks).
Step 2: Keep people and pets away from affected areas; sewage exposure is a health risk.
Step 3: Call for emergency drain cleaning. A professional may recommend cable clearing, hot water jetting, and/or a camera inspection to confirm the cause (grease, roots, scale, or a damaged line).
Step 4: Once cleared, ask about prevention—recurring clogs usually mean the line needs more than a quick opening.
If you suspect frozen pipes
Step 1: Turn on a faucet slightly (a small trickle can relieve pressure).
Step 2: Warm the area with safe heat (space heater monitored, cabinet doors open) and keep the home heated.
Step 3: Do not use open flame. If a pipe has split, shut off the main water and call for repair.
Step 4: After thawing, have the line checked—many failures happen right after the freeze is “over.”
The Boise / Treasure Valley angle: prevention that matches local conditions
Boise homes span decades of construction—from older neighborhoods with aging supply lines to newer builds with modern valves and appliances. Regardless of the home’s age, three Boise-friendly habits reduce emergency calls:
Test your main shutoff twice a year
If it’s stuck, that becomes an emergency during an emergency. A plumber can replace or service valves so they work when you need them most.
Plan for hard water
Hard water can show up as white scale on faucets, cloudy glassware, and reduced water heater efficiency. If you’re seeing buildup, a water treatment strategy can protect fixtures and extend equipment life.
Schedule drain maintenance before it’s urgent
Recurring clogs are a warning sign. Clearing the line thoroughly (and confirming the cause) is often less disruptive than an after-hours sewage backup.
Planning a kitchen or bathroom update? Plumbing layout changes are a great time to modernize shutoffs, replace aging supply lines, and improve fixture performance.
Need emergency plumbing in Boise right now?
If water is actively leaking, a drain is backing up, or you’re worried a small issue is about to become a big one, Cloverdale Plumbing provides 24/7 emergency plumbing in Boise and across the Treasure Valley.
FAQ: Emergency Plumbing in Boise
How do I know if I should shut off the main water?
If water is actively flowing and you can’t stop it with a fixture shutoff (or you don’t know where the leak is), shut off the main. It’s the fastest way to prevent major damage.
Is an overflowing toilet always a simple clog?
Not always. If other drains are slow, gurgling, or backing up, it may be a main sewer line blockage. Stop water use in the home and call for professional drain cleaning.
Should I use chemical drain cleaner during a backup?
It’s risky. Chemicals can damage certain pipes, worsen some clogs, and create hazards for anyone clearing the line. A professional assessment is safer—especially for repeat clogs or mainline issues.
What’s the difference between drain snaking and hot water jetting?
Snaking uses a cable to open or break apart an obstruction. Hot water jetting uses high-pressure hot water to scour buildup from the pipe interior—often helpful for recurring clogs, grease, scale, or root intrusion.
How can I reduce the chance of a water heater emergency?
Watch for early signs (rusty water, popping sounds, fluctuating temperatures, moisture at the base). Annual maintenance and addressing hard-water scale can help prevent sudden failures.
Do you handle emergencies outside Boise?
Yes—Cloverdale Plumbing serves Boise and the broader Treasure Valley. If you’re nearby and have an urgent issue, reach out through the contact page for dispatch options.
Glossary (Helpful Terms)
Main water shutoff
A valve that stops water entering your home. Turning it off is often the quickest way to stop major leaks.
Fixture shutoff valve
A small valve near a toilet or under a sink that isolates water to that single fixture.
Mainline (sewer line)
The primary drain pipe that carries wastewater from your home to the municipal sewer (or to a septic system). Mainline clogs can affect multiple fixtures at once.
Hot water jetting
A drain-cleaning method that uses high-pressure hot water to clean pipe walls and remove stubborn buildup.
Hard water (scale)
Water with elevated minerals (commonly calcium and magnesium) that can leave deposits in plumbing, fixtures, and water heaters over time.
Drain Cleaning Services in Meridian, ID: What’s Causing Your Clogs (and How to Prevent the Next One)
September 18, 2026A slow drain is annoying. A recurring clog is a warning sign.
If you’re in Meridian, Idaho and dealing with slow sinks, standing shower water, or a toilet that “almost” flushes, you’re not alone. Many clogs start small—then turn into backups at the worst possible time. This guide breaks down the most common causes of drain issues, when a clog may actually be a main sewer problem, and what you can do to reduce repeat drain cleaning calls—without relying on harsh chemical shortcuts.
Local focus: Meridian & Treasure Valley
Service focus: drain cleaning services
When it’s urgent: multiple drains backing up
Why drains clog in the first place (and why “it worked last time” stops working)
Most clogs aren’t one big blockage—they’re a buildup. Think of your drain line like the inside of a coffee mug: a little residue today becomes a stubborn ring later. In plumbing, the “ring” is commonly grease, soap scum, hair, food particles, mineral scale, or a combination that hardens over time.
The tricky part: a plunger or a store-bought product can sometimes poke a temporary hole through the clog (so the water drains), but the residue stays on the pipe walls. That’s why the same tub or kitchen sink can clog again in a few weeks or months.
The most common culprits (by fixture)
Kitchen sink clogs
Grease and oils coat the pipe, then trap food particles. Even garbage disposals don’t stop grease—shredded scraps can stick to greasy pipe walls and form a thick paste.
Tip: The EPA recommends keeping fats, oils, and grease out of drains to help prevent blockages and overflows. (epa.gov)
Shower & tub clogs
Hair plus soap scum is the classic combo. Conditioner and body wash can make it worse by creating a slick film that catches more hair. If your tub drains slowly only after a few minutes of running water, buildup on the pipe walls is often the reason.
Bathroom sink clogs
Toothpaste, shaving cream, and soap scum create a sticky layer. Add hair and small debris, and the pop-up stopper area becomes a common choke point.
Toilet clogs
Too much paper, “flushable” wipes (often not truly sewer-safe), and kids’ toys are typical causes. If the toilet is the only issue, it may be a localized clog. If other drains act up too, it may be bigger than the toilet.
When a “clogged drain” might be a main sewer line issue
A key rule of thumb: one fixture = local clog. multiple fixtures = possible main line problem. Some of the most consistent red flags include:
Multiple slow drains at the same time (tub + toilet + sink). (hometips.com)
Gurgling sounds from toilets or drains when water runs elsewhere. (hometips.com)
Sewer odors indoors or near floor drains. (hometips.com)
Water backing up in a lower drain (shower/tub) after flushing a toilet or running the washer. (hometips.com)
If you’re seeing these signs, it’s smart to pause before repeated plunging or chemical drain cleaners—especially if you have a finished basement, a downstairs bathroom, or an older home where backups can cause fast damage.
Hydro jetting vs. snaking: what’s the difference?
Not all drain cleaning is the same. Two common professional approaches are cable augers (snakes) and high-pressure water jetting. For many recurring clogs—especially grease, sludge, or heavy buildup—hot water jetting can scour the pipe walls instead of just punching a hole through the blockage.
Cloverdale Plumbing offers both drain cleaning and hot water jetting, so the approach can match what’s actually happening inside the line—rather than forcing one method for every situation.
Did you know? Quick drain facts that save real headaches
Grease is a repeat offender. EPA guidance emphasizes keeping fats, oils, and grease out of sinks and sewers to reduce blockages and overflows. (epa.gov)
Multiple slow drains often point to the main line. If several fixtures are affected together, it’s commonly not a single sink issue. (hometips.com)
Gurgling is a clue. Trapped air and pressure changes can show up as gurgling when a downstream blockage is developing. (hometips.com)
A practical prevention plan (that doesn’t feel like extra work)
If your household looks like most busy Meridian homes, prevention needs to be simple and repeatable. These habits make the biggest difference:
1) Keep kitchen grease out of the drain
Pour cooled grease into a container and throw it away. Wipe greasy pans with a paper towel before washing. This aligns with EPA guidance that fats, oils, and grease should not go down the drain. (epa.gov)
2) Use drain screens where hair and food scraps are common
A $5 screen prevents a $500 emergency. Put one in showers and tubs, and use a sink strainer in the kitchen.
3) Be cautious with chemical drain cleaners
For recurring or slow-building clogs, harsh chemicals may not remove the underlying buildup and can create messes during later repairs. If you’re facing repeated clogs, a professional cleaning approach is usually more effective long-term.
4) If you’re on well and/or concerned about mineral buildup, address water quality
Hardness varies by neighborhood and water source. Meridian’s published water quality information includes hardness values by zone, and many local homes benefit from proper treatment depending on the situation. If you notice scale on fixtures or frequent mineral-related issues, a tailored system can help.
Related service: water softening and treatment systems
Meridian, ID local angle: why “suddenly” clogged drains aren’t always sudden
Meridian has grown quickly, and homes across the Treasure Valley include a mix of older plumbing, remodel updates, and newer construction. That mix matters because:
Remodels can change flow patterns: new fixtures, rerouted drains, or added bathrooms can affect how the system vents and drains—especially if an older main line is still in place. (If you’re planning an upgrade, see plumbing remodel services.)
Kitchen use is high in busy family homes: the more meals at home, the more grease and food residue show up in lines—one of the leading causes of recurring kitchen clogs per public guidance on FOG control. (epa.gov)
Main-line issues reveal themselves in patterns: multiple slow drains, gurgling, odors, and backups are consistent warning signs that the problem is beyond a single sink. (hometips.com)
Schedule drain cleaning before it becomes an emergency
If you’re seeing repeat clogs, slow drains in more than one area, or any sign of a developing main-line backup, it’s worth getting a professional assessment. Cloverdale Plumbing has served the Treasure Valley since 1953 and offers both standard drain cleaning and hot water jetting options.
Learn more about available services: plumbing services and 24/7 emergency plumbing.
Request Drain Cleaning Help
Prefer planning ahead? Ask about proactive maintenance for recurring kitchen or main-line issues.
FAQ: Drain cleaning services in Meridian, Idaho
How do I know if it’s a main sewer line clog or just one drain?
If multiple drains are slow or backing up, you hear gurgling, notice sewer odors, or see water backing up in a lower fixture, those patterns often point to the main line rather than a single localized clog. (hometips.com)
Is it okay to pour grease down the drain if I run hot water?
Hot water can move grease temporarily, but it often cools and sticks farther down the line. Public guidance from the EPA emphasizes keeping fats, oils, and grease out of drains to prevent blockages. (epa.gov)
Why does my shower drain slowly only after a few minutes?
That pattern often suggests partial restriction—hair and soap scum buildup can allow some drainage at first, then “choke” the flow as water volume increases.
What’s the benefit of hot water jetting compared to basic drain snaking?
Snaking can be great for punching through a clog. Jetting is often chosen when there’s heavy buildup (like grease or sludge) because it can scour pipe walls and reduce how quickly the line clogs again.
Do you offer emergency drain cleaning?
Yes—Cloverdale Plumbing provides 24/7 emergency plumbing services for urgent drain and backup situations, and you can reach the team through the contact page.
Glossary (quick definitions)
Main sewer line
The primary drain pipe that carries wastewater from your home to the municipal sewer (or to a septic system).
Hydro jetting / hot water jetting
A professional drain cleaning method that uses high-pressure water (often heated) to remove grease, sludge, and buildup from pipe walls.
FOG (fats, oils, and grease)
Kitchen byproducts that can coat pipes and contribute to clogs; public agencies recommend keeping FOG out of drains. (epa.gov)
Trap (P-trap)
The curved section of pipe under sinks that holds water to block sewer gases from entering your home.