Remodeling a bathroom or kitchen? The plumbing decisions you make now determine how reliable (and low-stress) the space feels for years.
A remodel is the perfect time to fix what you can’t see: aging supply lines, questionable drain slopes, undersized venting, or a water heater that’s barely keeping up. Done right, a plumbing remodel improves comfort (hot water when you need it), protects the home (fewer hidden leaks), and can reduce water use with high-performance fixtures. Cloverdale Plumbing has served the Treasure Valley since 1953, and we’ve learned that the best remodels plan plumbing early—before tile, cabinets, and paint lock you in.
What counts as a “plumbing remodel” (and what homeowners often miss)
Plumbing remodels aren’t only about swapping a faucet. They include any change that affects how water comes in, how wastewater leaves, or how fixtures perform. In a typical Eagle home, that might mean:
Layout changes: moving a sink, shower, tub, toilet, laundry, or adding a bar/prep sink.
Behind-the-wall upgrades: replacing old shutoff valves, supply lines, drain piping, and venting while walls are open.
Performance improvements: better water pressure balance, faster hot water delivery, quieter drains, fewer clogs.
Water quality additions: water softening, filtration, or reverse osmosis to protect fixtures and appliances.
The most common “miss” is focusing on finishes (tile, lighting, hardware) while leaving the original valves, aging pipes, or undersized drains untouched—only to have a leak or recurring clog months later.
Eagle-specific planning: permits, inspections, and timing
If your remodel involves altering plumbing (not just replacing a like-for-like fixture), you may need a plumbing permit and inspection through the City of Eagle. The City maintains an online plumbing permit page and notes that applications received after 4:00 pm may not receive a next-day inspection if requested—something to keep in mind when you’re scheduling drywall and tile. (cityofeagle.org)
A practical approach is to plan for these checkpoints:
Rough-in inspection: after new supply/drain/vent work is installed but before walls are closed.
Final inspection: after fixtures are set and the system is complete.
Choosing fixtures that save water without feeling “low flow”
For many homeowners, “water-efficient” brings back memories of older fixtures that didn’t rinse well or had weak spray patterns. Newer options are much better—especially fixtures with the EPA’s WaterSense label, which are independently certified for both efficiency and performance. (epa.gov)
| Upgrade Area | What to Look For | Why It Matters in Real Life |
|---|---|---|
| Showerhead | WaterSense-labeled models (tested for performance) | EPA notes WaterSense showerheads can save the average family more than 2,700 gallons/year and cut water + energy costs. (epa.gov) |
| Bathroom faucet/aerator | WaterSense-labeled faucets or aerators | EPA estimates WaterSense bathroom faucets/aerators can save about 700 gallons/year for an average family. (19january2017snapshot.epa.gov) |
| Toilet | High-efficiency toilets (HET) and proven flush performance | Toilets are a major indoor water user; upgrading is one of the biggest ways to reduce waste while improving flush reliability. (archive.epa.gov) |
If you’re remodeling a primary bathroom, bundling upgrades (toilet + showerhead + faucet aerators) is a smart move—EPA notes that a “high-efficiency makeover” can pay for itself quickly in some homes. (epa.gov)
The “behind-the-wall” checklist that protects your remodel
A beautiful remodel is only as dependable as the piping and valves behind it. When walls are open, consider these high-value upgrades:
New shutoff valves (and easy access): If a faucet or toilet fails, you want to shut water off fast—without guessing which valve works.
Replace aging or mixed-material piping: Older pipe segments, transitions, or DIY additions can become weak points that fail under pressure or temperature swings.
Right-size drains and venting: Good venting helps fixtures drain smoothly and keeps sewer odors where they belong—inside the piping, not your home.
Plan cleanouts: A well-placed cleanout can turn a future clog from a major disruption into a straightforward service call.
Hot water delivery strategy: If your new shower has higher demand (or you added a second shower head), confirm the water heater and piping can support it.
Step-by-step: how to plan a plumbing remodel that stays on schedule
1) Decide what must move—and what should stay put
Keeping a toilet or shower in the same general location can reduce labor and risk because drains and vents are the trickiest pieces to relocate. If you do move fixtures, plan the new drain/vent path before framing is finalized.
2) Choose fixtures early (then verify rough-in requirements)
Different shower valves, tubs, toilets, and faucets have different rough-in dimensions and supply needs. Selecting them early prevents last-minute changes that can delay inspections and finishing trades.
3) Address water quality if you see scale, spots, or frequent cartridge failures
In parts of the Treasure Valley, homeowners notice mineral buildup that shortens fixture life and reduces efficiency. Water treatment options (like softeners or filtration) can help protect your investment—especially for new shower valves, fancy faucets, and tankless water heaters.
4) Build your schedule around rough-in + inspection
Most remodel delays happen when walls get closed before plumbing is truly final. Plan a buffer so the inspection step doesn’t collide with drywall and tile dates. Eagle’s permit/inspection timing notes (including the 4:00 pm application cutoff affecting next-day inspections) can matter more than people expect. (cityofeagle.org)
5) Don’t forget the drains (they’re the “quiet hero” of a good remodel)
If your home has a history of slow drains or backups, this is the moment to consider proactive drain cleaning or hot water jetting—especially on main lines or heavily used kitchen drains—before new flooring and cabinets make access harder.
Local angle: remodeling for Eagle homes (family-friendly, resale-smart, and winter-ready)
Eagle homeowners often balance daily family function with long-term value. A few remodel choices tend to pay off here:
Comfort + safety: thermostatic/pressure-balancing shower valves, properly supported grab bars (planned during framing), and reliable shutoffs.
Water efficiency without compromise: WaterSense-labeled fixtures can reduce water use while maintaining performance. (epa.gov)
Freeze-risk awareness: exterior hose bibs, garage/laundry plumbing, and crawlspace runs should be evaluated during upgrades so one cold snap doesn’t undo an expensive remodel.
Ready to plan your remodel plumbing the right way?
If you’re remodeling in Eagle, Boise, or anywhere in the Treasure Valley, Cloverdale Plumbing can help you map fixture locations, verify rough-in requirements, improve drainage, and protect your new finishes with solid, code-compliant plumbing.
FAQ: Plumbing Remodels in Eagle, ID
Do I need a permit to remodel a bathroom or kitchen in Eagle?
If the project changes plumbing (moving fixtures, adding lines, changing drain/vent piping), permits and inspections are commonly required. The City of Eagle provides plumbing permit guidance and has timing notes that can impact scheduling. (cityofeagle.org)
If the project changes plumbing (moving fixtures, adding lines, changing drain/vent piping), permits and inspections are commonly required. The City of Eagle provides plumbing permit guidance and has timing notes that can impact scheduling. (cityofeagle.org)
Is it worth replacing pipes during a remodel if nothing is leaking?
Often, yes—because access is the expensive part. When walls and floors are open, you can replace questionable sections, update shutoffs, and reduce the risk of hidden leaks later. A quick assessment can help you prioritize what to replace versus what to leave.
Often, yes—because access is the expensive part. When walls and floors are open, you can replace questionable sections, update shutoffs, and reduce the risk of hidden leaks later. A quick assessment can help you prioritize what to replace versus what to leave.
Will “water-saving” fixtures feel weak?
Not necessarily. WaterSense-labeled fixtures are independently certified to meet performance and efficiency criteria, so you’re not guessing based on marketing claims. (epa.gov)
Not necessarily. WaterSense-labeled fixtures are independently certified to meet performance and efficiency criteria, so you’re not guessing based on marketing claims. (epa.gov)
What’s the best time to do drain cleaning during a remodel?
Before new cabinets, flooring, or finished walls go in. If your home has recurring slow drains, consider preventive drain cleaning or hot water jetting so buildup doesn’t become an emergency right after you move back in.
Before new cabinets, flooring, or finished walls go in. If your home has recurring slow drains, consider preventive drain cleaning or hot water jetting so buildup doesn’t become an emergency right after you move back in.
Should I upgrade my water heater during a remodel?
If you’re adding a larger tub, multi-head shower, or extra bathroom fixtures, it’s smart to confirm your current water heater can keep up. Remodels are also a good time to improve shutoffs, expansion control, and maintenance access—details that make future service simpler.
If you’re adding a larger tub, multi-head shower, or extra bathroom fixtures, it’s smart to confirm your current water heater can keep up. Remodels are also a good time to improve shutoffs, expansion control, and maintenance access—details that make future service simpler.
What are the most “future-proof” plumbing upgrades?
Accessible shutoffs, quality valves, cleanouts, proper venting, and durable piping. If you’re also interested in reducing water use, WaterSense-labeled showerheads and faucets can provide measurable savings. (epa.gov)
Accessible shutoffs, quality valves, cleanouts, proper venting, and durable piping. If you’re also interested in reducing water use, WaterSense-labeled showerheads and faucets can provide measurable savings. (epa.gov)
Glossary (Remodel Plumbing Terms)
Rough-in: The stage when supply, drain, and vent piping is installed (and often inspected) before walls and floors are closed.
Vent (DWV venting): Piping that allows air into the drain system so fixtures drain properly and sewer gases vent safely.
Cleanout: An access point on a drain line that allows a plumber to clear clogs and inspect the pipe without removing fixtures.
Pressure-balancing valve: A shower valve that helps stabilize water temperature when someone runs another fixture (like flushing a toilet or starting laundry).
WaterSense: An EPA program that labels independently certified water-efficient products (like toilets, showerheads, and faucets) that meet performance criteria. (epa.gov)
Hot water jetting (hydro jetting): A drain-cleaning method using high-pressure hot water to remove grease, scale, roots, and buildup from drain and sewer lines.
Plumbing Remodels in Nampa, ID: A Homeowner’s Checklist for a Smooth, Code-Smart Upgrade
September 25, 2026Plan the design you want—then make sure the plumbing can support it
Remodeling a bathroom or kitchen in Nampa is exciting—until a “simple” change (moving a sink, upgrading a shower, adding a second vanity) turns into slow drains, weak water pressure, or surprise wall openings. A plumbing remodel goes best when you treat it like a system upgrade: water supply, drains/vents, fixtures, and water quality all working together. This guide walks through the practical decisions that keep your remodel on time, on budget, and built to last—especially in Treasure Valley homes where hard water and aging piping can add complexity.
What counts as a “plumbing remodel” (and why it matters)
A plumbing remodel is more than swapping a faucet. It includes any project where you change fixture locations, alter drain lines, modify venting, upgrade water heaters, add a wet bar, install a new tub/shower, or convert spaces (laundry rooms, basement baths, ADU-style layouts). The reason this matters: once you change layout or load, your existing piping may no longer be sized, vented, or routed appropriately—leading to recurring clogs, sewer smells, and noisy or slow drains.
Local code note: Idaho uses an Idaho State Plumbing Code that is based on the Uniform Plumbing Code (UPC), with state adoption information published through Idaho’s building code resources. For homeowners, the takeaway is simple: layout changes should be planned with code compliance in mind—especially venting, drain slope, fixture counts, and water heater requirements.
The biggest remodel mistakes (and how to avoid them)
Most plumbing remodel problems aren’t dramatic on day one—they show up months later as slow drains, gurgling, temperature swings, or mineral buildup. These are the issues we see most often in Treasure Valley remodels:
1) Moving fixtures “because it looks better” without planning the drain & vent path
A toilet, shower, or kitchen sink can be moved—but the drain size, slope, and venting route still have to work. If the venting is compromised, you can get sewer odor, trap siphoning, and noisy drains.
2) Upgrading to “high-end” fixtures without checking supply sizing and pressure
Rain heads, body sprays, and big tub fillers can demand more flow than older branch lines comfortably provide. Proper balancing can prevent weak showers when someone runs the dishwasher or laundry.
3) Ignoring hard water during a remodel
Hard water minerals (commonly calcium and magnesium) can shorten the lifespan of water heaters and clog aerators, cartridges, and valves. Planning for water treatment and easy-to-service shutoffs during the remodel saves hassle later.
Step-by-step: A homeowner’s plumbing remodel checklist
Step 1: Identify what’s staying put vs. what’s moving
Keeping fixture locations the same (especially toilets and tubs) typically reduces labor and risk. If you want a new layout, decide early—moving drains after framing/drywall plans are finalized is where budgets blow up.
Step 2: Ask for a “behind-the-walls” assessment
Older homes can have mixed materials, past repairs, or sections that are near end-of-life. A good assessment checks for corrosion, past leaks, inadequate venting, and whether repiping certain runs will prevent future failures.
Step 3: Build service access into the design
Remodels look clean when access is hidden, but maintenance still happens. Consider accessible shutoff valves, a serviceable shower valve location, and cleanouts where they make sense—especially for kitchen and main drain lines.
Step 4: Choose fixtures that reduce problems, not just water use
Water-efficient fixtures can reduce water consumption, but performance matters too. EPA WaterSense-labeled toilets, for example, are designed to be at least 20% more water-efficient than the federal standard while meeting performance criteria—helpful when you’re trying to balance comfort, utility bills, and long-term reliability.
Step 5: Decide now if you’re addressing drains proactively
If your remodel includes a busy kitchen, additional bathrooms, or a laundry relocation, it may be worth planning drain cleaning or hot water jetting at the right time—before everything is closed up. This is especially useful if the home has a history of slow drains or recurring backups.
Quick comparison table: Common plumbing remodel upgrades
| Upgrade | Best for | What to plan for | Common pitfall |
|---|---|---|---|
| Relocating a vanity/sink | Better layout, double vanity, storage | Drain/vent routing, shutoffs, wall depth | Slow drain from poor venting |
| Shower upgrade (valve + head) | Comfort, temperature stability | Pressure/flow, cartridge service access | Hard water scaling a new valve |
| Kitchen sink + disposal swap | Function, noise reduction | Trap configuration, dishwasher tie-in | Grease buildup leading to clogs |
| Water heater upgrade | Reliability, capacity, efficiency | Venting, clearances, shutoffs, maintenance | Not planning for hard water maintenance |
Tip: If your remodel adds fixtures (extra bath, bar sink, laundry move), ask your plumber to verify drain capacity and venting—not just “can we make it fit.”
Did you know? Quick plumbing remodel facts
WaterSense toilets: WaterSense-labeled toilets are designed to use a maximum flush volume of 1.28 gallons per flush—about 20% less than the federal standard of 1.6 gpf—while meeting performance requirements.
Hard water impact: Mineral-heavy water can accelerate scale buildup on heating elements, inside valves, and on fixture aerators—one reason water heater maintenance and water treatment planning matter during remodels.
Drain cleaning timing: If you’re opening floors/walls, it’s often the most cost-effective moment to address chronic drain issues and add access points—before new finishes go in.
Nampa & Treasure Valley considerations (what local homeowners run into)
Nampa homeowners often balance two realities: homes with decades of “layers” (past repairs and remodels) and water conditions that can be tough on plumbing components. If you’re on a well or your neighborhood has harder water, it’s smart to discuss water softening or filtration options during the planning phase—especially if you’re installing new shower valves, a new water heater, or premium fixtures you want to protect.
Remodel planning tip for Nampa: If you’re adding a bathroom, relocating laundry, or converting a space, schedule plumbing rough-in decisions early. It’s easier (and typically less expensive) to adjust drains and venting before framing and finishes are locked in.
Ready to plan a plumbing remodel that won’t surprise you later?
Cloverdale Plumbing has served Treasure Valley homeowners for decades, and we know how to make remodel plumbing practical, cleanly installed, and easy to maintain. If you’re remodeling in Nampa and want clear communication, reliable scheduling, and workmanship you can feel confident about, we’re here to help.
Need urgent help instead of a scheduled remodel? Visit our 24/7 emergency plumbing page.
FAQ: Plumbing remodels in Nampa, Idaho
Do I need a plumber if I’m only changing fixtures, not moving them?
Often, yes—especially for showers, tubs, garbage disposals, and water heater work. Even “same location” swaps can reveal shutoff issues, corrosion, incorrect venting, or worn valves that are best addressed before the new fixture goes in.
When should drain cleaning or hot water jetting happen during a remodel?
If your home has recurring clogs or slow drains, it’s usually best before final finishes are installed—especially if access is easier during demolition or rough-in. Learn more about our hot water jetting and drain cleaning options.
Should I replace old pipes while the walls are open?
If inspection shows aging, corrosion, repeated leaks, or undersized/poorly routed lines, selective repiping can be a smart investment—because access is the biggest cost driver. Our team can help evaluate options for pipe replacements and repairs.
How do I protect new fixtures from hard water in the Treasure Valley?
Planning for a water softener or treatment system can reduce scaling on faucets, shower valves, and water heater components. If you’re considering it during your remodel, explore water softening and treatment systems.
Can I upgrade my water heater during a remodel?
Yes—and a remodel is a great time to do it because the work area is often already accessible. If your household needs have changed (bigger tub, more bathrooms, growing family), talk through sizing and options with a pro. See water heater installation.
How early should I call a plumber for a remodel?
Ideally before plans are finalized—especially if you want to move fixtures. Early input helps avoid design choices that are expensive (or impossible) once framing, venting, and drain paths are considered. If you’re planning a kitchen or bath update, our remodel plumbing team can coordinate with your contractor.
Glossary (helpful terms you’ll hear during a remodel)
Rough-in
The phase where supply lines, drains, and vents are installed (or relocated) before walls and finishes are completed.
Trap
The curved section of drain piping that holds water to block sewer gases from entering your home.
Venting
A system of pipes that balances air pressure in drains so wastewater flows smoothly and traps don’t siphon dry.
Cleanout
An access point that allows drain lines to be serviced and cleared without removing fixtures or opening walls.
Hot water jetting
A drain-cleaning method that uses high-pressure hot water to remove grease, scale, sediment, and certain types of buildup from pipe walls.
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.