Fast, calm steps that protect your home before the plumber arrives
Plumbing emergencies don’t wait for business hours—especially in the Treasure Valley, where winter cold snaps can turn a small issue into water damage fast. If you’re in Caldwell and dealing with a leak, no hot water, a sewer backup, or a burst pipe, the first few minutes matter. This guide walks you through exactly what to do right away, what to avoid, and the practical maintenance habits that reduce the odds you’ll need an emergency call in the first place.
Your 5-minute emergency checklist (Caldwell homeowners)
1) Stop the water
If water is actively leaking or flooding, shut off the nearest fixture valve first (under-sink, behind toilet, water heater valve). If you can’t isolate it quickly, shut off the main water supply to the house. Then open a couple of cold taps to relieve pressure and help slow the leak.
2) Protect people and property
Move towels, rugs, and valuables out of harm’s way. If water is near outlets, appliances, or the electrical panel, avoid the area and consider shutting off power to that zone if it’s safe to do so. Water damage spreads sideways under flooring—fast—so containment matters.
3) If it’s a water heater issue, make one extra move
No hot water, rumbling tank, or leaking at the base can signal trouble. Shut off the water supply to the heater. For an active leak, avoid contact with hot water. If you suspect overheating or a serious malfunction, keep a safe distance and call a pro.
Safety note on temperature
Many homes are comfortable at 120°F for water heater settings, which can reduce scalding risk and save energy. If your household needs higher temps (or you have health-related concerns), a mixing/tempering valve can help keep tap temperatures safer. (energy.gov)
4) For sewer backups or multiple drains clogging: stop using water
If more than one drain is backing up (or you smell sewer odors), don’t run the dishwasher, laundry, showers, or even flush toilets. That extra water can push the backup further into the home. This is one situation where “trying one more flush” can make the cleanup much worse.
5) Get the right details ready for the plumber
When you call, share: where the leak/backup is happening, when it started, whether the main water is off, and whether you’re on a well/septic or city utilities. If you can safely take a quick photo/video, it can help speed up diagnosis.
What counts as a true plumbing emergency?
Not every inconvenience is an emergency, but these situations usually deserve same-day (often immediate) help:
• Active water leak you can’t stop with a fixture valve
• Water near electrical outlets, panels, or appliances
• Sewer line backup or multiple drains clogging at once
• No water (or very low pressure) throughout the house
• Suspected frozen pipe (no flow + visible frost/condensation or odd noises)
Quick comparison: DIY-friendly vs. “call now” problems
Situation
Try first
Call emergency service when…
Single slow sink drain
Stop using it, remove trap debris if comfortable, avoid harsh chemicals
Water backs up elsewhere or returns quickly
Toilet overflow
Shut toilet valve, use plunger once the water drops
Overflow continues or multiple fixtures are affected
Water heater leak
Shut water to heater, protect flooring
Leak is at tank base, hot water is discolored, or you hear loud popping/rumbling
Suspected frozen pipe
Open faucets slightly, warm area gently (safe space heater distance)
Pipe is bulging, you can’t locate the freeze, or you suspect a burst
If you’re unsure, treat “unknown source leak” and “multiple fixtures backing up” as urgent. Those are the calls that can escalate quickly if you wait.
Caldwell’s winter factor: frozen-pipe prevention that actually works
Caldwell winters often dip into the 20s °F overnight, which is enough for exposed or poorly insulated lines to freeze under the right conditions. (weather-us.com)
When temperatures stay near or below freezing:
• Drip the right faucets (typically those on exterior walls or far from the shutoff). A drip every 1–3 seconds can help keep water moving. (tomsguide.com)
• Open vanity/sink cabinets on exterior walls to let warm air circulate.
• Keep indoor heat consistent—especially at night and when you’re away.
• Remove and drain hoses and shut off/safeguard outdoor hose bibs if applicable.
If you suspect a pipe is frozen, avoid open flames (like a torch). Gentle, controlled warming is safer—and if you can’t locate the frozen section, it’s time to call a plumber. Recognizing early signs like reduced flow, visible frost, or unusual noises can prevent a burst. (homesandgardens.com)
Drain emergencies: why “hot water jetting” can be a game-changer
If your household deals with recurring clogs, slow drains, or backups—especially in kitchens or main lines—standard snaking isn’t always enough. Hot water jetting uses pressurized hot water to break up grease, scale, hair, and buildup that can cling to pipe walls. It’s often used as a deeper clean for problem lines and can be a smart option for prevention (not just emergencies).
Did you know? Quick facts that help you catch problems earlier
A “quiet” toilet leak can waste a lot of water
Even modest leak rates can add up fast. EPA WaterSense publishes examples showing how leaking toilets can waste significant monthly volume depending on the leak rate. If your toilet occasionally runs or refills on its own, it’s worth checking. (19january2021snapshot.epa.gov)
Water heater temperature affects safety and operating cost
Setting many household water heaters to about 120°F can reduce scald risk and lower energy use while still meeting everyday needs for showers and dishes. (energy.gov)
Hot water system design matters for health and safety
Public-health guidance emphasizes balancing hot-water temperatures (to limit bacterial growth) with anti-scald controls such as mixing valves at the point of use. (cdc.gov)
Step-by-step: how to reduce the odds of an emergency call
These are the “small habits” that prevent the biggest headaches.
Step 1: Know your shutoff valves before you need them
Find your main water shutoff and test that it turns (gently). Also locate individual shutoffs under sinks and behind toilets. If a valve is stuck or corroded, that’s a good reason to schedule a quick replacement before an emergency.
Step 2: Treat drains like a system, not a trash can
Avoid pouring grease down kitchen drains, use sink strainers, and be cautious with “flushable” wipes (they’re a common cause of backups). If you’ve had repeat clogs, a preventative cleaning can restore flow before the next holiday gathering or cold snap.
Step 3: Keep your water heater from becoming the surprise problem
Watch for: rusty water, popping sounds, slow hot-water recovery, or a puddle at the base. Those are early warning signs. Even a simple maintenance visit can catch issues like sediment buildup or worn components before they fail at the worst time.
Local angle: plumbing reality in Caldwell and the Treasure Valley
Caldwell homes range from older neighborhoods with aging supply lines to newer builds that still experience typical issues like clogged drains and water heater wear. Winter is the season when small insulation gaps and exterior-wall plumbing runs get tested the hardest. Planning ahead is especially helpful if you travel, leave for weekends, or have a garage water line that isn’t fully conditioned.
If you’re remodeling a bathroom or kitchen, it’s also a smart time to evaluate shutoff access, replace old angle stops, and confirm drain venting—those behind-the-wall choices affect how “emergency-proof” your home feels later.
Need emergency plumbing help in Caldwell?
Cloverdale Plumbing has served the Treasure Valley for decades with 24/7 emergency response, clear communication, and workmanship you can trust—whether it’s a midnight leak, a failing water heater, or a main line backup.
FAQ: Emergency plumbing in Caldwell, Idaho
Should I turn off the main water if the leak seems small?
If you can safely isolate the leak at a fixture shutoff, that’s usually enough. If you can’t identify the source quickly, the main shutoff is the safest move—hidden leaks can cause more damage than you think.
Is a clogged drain an emergency?
A single slow drain might wait, but multiple drains backing up, sewage smell, or water coming up in a tub/shower usually points to a main line issue and should be treated as urgent.
Do I really need to drip faucets during a freeze?
During extended freezing temps—especially if your plumbing is on an exterior wall or in a cold crawlspace/garage—a steady drip can help reduce the chance of freezing by keeping water moving. (tomsguide.com)
What should I avoid doing during a plumbing emergency?
Avoid chemical drain cleaners (they can damage pipes and make professional clearing more hazardous), avoid “one more flush” during a suspected sewer backup, and avoid open flames for thawing frozen pipes.
Can I prevent emergencies with routine service?
Yes—simple checks like confirming shutoff valves work, addressing recurring clogs with professional cleaning, and keeping an eye on water heater performance can prevent many late-night failures.
Glossary (quick definitions)
Main water shutoff: The valve that stops water flow to the entire home.
Fixture shutoff (angle stop): Small valve under a sink or behind a toilet that isolates a single fixture.
Hot water jetting (hydro jetting): A drain-cleaning method using high-pressure (often hot) water to scour buildup from inside pipes.
Tempering / mixing valve: A valve that blends hot and cold water to deliver safer tap temperatures (helps reduce scald risk).
Main line backup: A blockage in the primary sewer/drain line that can cause multiple fixtures to back up.
Emergency Plumbing in Nampa, ID: What to Do First (and How to Prevent the Next Call)
March 10, 2026A calm, step-by-step plan for the most common plumbing emergencies
Plumbing emergencies rarely happen at a convenient time—especially in the Treasure Valley, where cold snaps and busy family routines can turn a small issue into a major mess fast. If you’re searching for emergency plumbing in Nampa, ID, the best thing you can do is follow a simple priority order: stop the water, protect your home, and get a pro involved before hidden damage spreads.
Below is a practical checklist you can save and use, plus prevention tips that reduce repeat emergencies (and surprise repair bills). Cloverdale Plumbing has served the Treasure Valley since 1953, and the goal of this guide is to help you make the safest, smartest first moves—whether the issue is a burst pipe, a backed-up drain, or a failing water heater.
The 5-minute emergency plumbing checklist (Nampa homeowners)
When something goes wrong, speed matters—but so does doing things in the right order. Use this checklist:
1) Shut off the water (or isolate the fixture)
If it’s a sink, toilet, or washing machine leak, try the fixture shutoff valve first (usually behind the toilet or under the sink). If you can’t stop it there—or if the leak is coming from a wall, ceiling, or floor—shut off your home’s main water valve.
If it’s a sink, toilet, or washing machine leak, try the fixture shutoff valve first (usually behind the toilet or under the sink). If you can’t stop it there—or if the leak is coming from a wall, ceiling, or floor—shut off your home’s main water valve.
2) Shut off power or gas if water is near it
If water is pooling near outlets, a breaker panel, or an appliance, keep safety first. Avoid standing water while handling anything electrical. For water heater issues, turn off the unit (electric at the breaker; gas to “off”) and close the cold-water supply line to the heater.
If water is pooling near outlets, a breaker panel, or an appliance, keep safety first. Avoid standing water while handling anything electrical. For water heater issues, turn off the unit (electric at the breaker; gas to “off”) and close the cold-water supply line to the heater.
3) Contain the damage
Use towels, buckets, and a wet/dry vacuum if you have one. Pull items out of cabinets and off flooring where possible. The sooner you remove standing water, the lower the risk of warped floors and mold.
Use towels, buckets, and a wet/dry vacuum if you have one. Pull items out of cabinets and off flooring where possible. The sooner you remove standing water, the lower the risk of warped floors and mold.
4) Don’t force drains or toilets
If a toilet is overflowing or multiple drains are backing up, stop using water in the home and call for help. Continuing to run faucets or flush can turn a stoppage into a full backup.
If a toilet is overflowing or multiple drains are backing up, stop using water in the home and call for help. Continuing to run faucets or flush can turn a stoppage into a full backup.
5) Call an emergency plumber and describe the symptoms clearly
Helpful details: where the leak is, whether you shut off water, whether any drains are slow, and whether you notice water heater noises, rust-colored water, or sewer odors.
Helpful details: where the leak is, whether you shut off water, whether any drains are slow, and whether you notice water heater noises, rust-colored water, or sewer odors.
Common emergency plumbing problems (and what they usually mean)
| What you’re seeing | Likely cause | Best first move |
|---|---|---|
| Water stain on ceiling / wet drywall | Leaking supply line, drain line, or upstairs fixture | Shut off water; avoid using upstairs plumbing; call for leak location/repair |
| Toilet runs constantly | Worn flapper/valve seal or fill valve issue | Test with dye; replace flapper if leaking persists |
| Multiple drains backing up (or gurgling) | Main line blockage (roots, grease, debris, scale) | Stop using water; schedule professional drain cleaning/jetting |
| No hot water / water heater rumbling | Failed element/thermostat, pilot/ignition issue, or sediment buildup | Turn off unit if leaking; book repair or replacement evaluation |
| Frozen pipe symptoms (no flow, frost on pipe) | Cold air exposure + poor insulation + temperature drop | Warm gently with hair dryer; never use open flame; call if inaccessible |
Note: The toilet “dye test” is a reliable way to confirm silent leaks (a common water-waster). EPA WaterSense recommends adding a few drops of food coloring to the tank and checking for color in the bowl after a short wait. If it appears, the flapper often needs replacement. (epa.gov)
When a “small leak” is actually urgent
Some plumbing problems look minor but escalate quickly. In a family home, you’ll want to treat these as “call now” situations:
Water heater leaking at the base: This can worsen rapidly, and water can damage flooring and nearby walls.
Water near electrical: Risk of shock or equipment damage.
Sewer smell + multiple slow drains: Can indicate a main line issue that may back up.
Any sign of frozen plumbing: Freezing expands inside the pipe and can cause a burst when it thaws.
Step-by-step: prevent the most common emergency calls
1) Know your shutoffs before you need them
Find and test your main shutoff valve (and label it). Also locate shutoffs for toilets, sinks, and the washing machine. This single habit cuts response time dramatically when something fails.
2) Prevent frozen pipes during Idaho cold snaps
Homes in Nampa often have vulnerable piping in garages, crawl spaces, exterior walls, and under-sink cabinets. Proven prevention steps include insulating exposed pipes, sealing drafts where cold air enters, disconnecting and draining outdoor hoses/lines, keeping cabinet doors open on very cold nights, and maintaining indoor heat rather than turning it way down overnight. Allowing a small drip from at-risk faucets during extreme cold can also help keep water moving. (info.oregon.aaa.com)
3) Don’t wait on slow drains—especially if it repeats
If one fixture drains slowly once, it may be a local clog. If it keeps happening (or multiple fixtures act up), that’s when professional drain cleaning makes sense—before you end up with a weekend backup. For heavy buildup (grease, scale, roots), hot water jetting can restore flow more thoroughly than quick, temporary methods.
4) Catch “silent leaks” before they show up on your bill
Toilets can leak quietly for a long time. A quick dye test (food coloring in the tank, wait a few minutes) can confirm whether water is slipping into the bowl. EPA WaterSense also notes flappers should be checked periodically and often replaced about every five years. (epa.gov)
5) Plan ahead for water heater reliability
If your water heater is older, making noise, delivering inconsistent hot water, or showing rust-colored water, schedule an evaluation before it fails unexpectedly. A planned replacement (or maintenance) is almost always less stressful than an emergency swap.
A local angle: what Nampa homeowners should watch for
In Nampa and across the Treasure Valley, emergency plumbing calls tend to spike during:
Deep freezes (frozen lines in garages/crawl spaces, burst hose bib lines)
Holiday gatherings (kitchen drains, disposals, overloaded bathroom use)
Spring cleanups (discovering slow drains, outdoor faucet issues, irrigation/supply line leaks)
Remodel season (moving fixtures, tying into old piping, uncovering corrosion)
If you’re planning a kitchen or bathroom update, getting the plumbing plan right from the start helps avoid “surprises” after walls are opened.
Need an emergency plumber in Nampa, ID?
If you’ve shut off the water (or you can’t), and you’re dealing with active leaking, overflow, no hot water, or a suspected main line backup, it’s time to get a licensed plumber involved quickly.
Contact Cloverdale Plumbing
For 24/7 help, you can also review how Cloverdale Plumbing handles after-hours response here: Emergency Services.
FAQ: Emergency plumbing in Nampa, Idaho
What counts as a plumbing emergency?
Active leaking you can’t stop, sewage backup, no water to the home, a leaking water heater, or any plumbing problem creating electrical risk are all emergencies.
Active leaking you can’t stop, sewage backup, no water to the home, a leaking water heater, or any plumbing problem creating electrical risk are all emergencies.
Should I use drain cleaner for a bad clog?
For recurring clogs or multiple fixtures backing up, chemical drain cleaners can be risky for pipes and may not solve the underlying blockage. It’s safer to stop using water and schedule professional drain clearing—especially for suspected main line issues.
For recurring clogs or multiple fixtures backing up, chemical drain cleaners can be risky for pipes and may not solve the underlying blockage. It’s safer to stop using water and schedule professional drain clearing—especially for suspected main line issues.
How can I tell if my toilet is leaking even if I don’t see water?
Try the dye test: add a few drops of food coloring to the tank and wait several minutes. If color appears in the bowl, there’s a leak (often the flapper). (epa.gov)
Try the dye test: add a few drops of food coloring to the tank and wait several minutes. If color appears in the bowl, there’s a leak (often the flapper). (epa.gov)
What should I do if I think a pipe is frozen?
Keep the faucet off or barely open, warm the pipe gently (hair dryer is a common method), and never use open flame. If you can’t access the frozen section or you suspect a burst, call a plumber. (info.oregon.aaa.com)
Keep the faucet off or barely open, warm the pipe gently (hair dryer is a common method), and never use open flame. If you can’t access the frozen section or you suspect a burst, call a plumber. (info.oregon.aaa.com)
Is hot water jetting worth it?
For heavy buildup (grease, scale, and some root intrusion), jetting can be a strong option because it cleans pipe walls rather than just poking a hole through a clog. A plumber can recommend it after evaluating your drain system and the type of blockage.
For heavy buildup (grease, scale, and some root intrusion), jetting can be a strong option because it cleans pipe walls rather than just poking a hole through a clog. A plumber can recommend it after evaluating your drain system and the type of blockage.
Glossary
Main water shutoff (main valve): The valve that stops water flow to your entire home.
Fixture shutoff: A local valve that stops water to a single fixture like a toilet or sink.
Toilet flapper: The rubber seal in the toilet tank that lifts during a flush and seals afterward. Worn flappers can cause silent leaks. (epa.gov)
Main line (sewer line): The primary drain line that carries wastewater from the home to the municipal sewer (or septic system).
Hot water jetting (hydro jetting): A drain-cleaning method that uses high-pressure water (often heated) to clear buildup and restore flow in pipes.
Emergency Plumbing in Meridian, ID: What to Do in the First 15 Minutes (Before the Damage Spreads)
January 22, 2026Fast, calm steps for leaks, clogs, and no-hot-water situations—made for Treasure Valley homes
Plumbing emergencies rarely start as “big” emergencies. They start as a drip, a slow drain, a water heater that’s “acting weird,” or a toilet that won’t stop running. Then the damage compounds—flooring swells, cabinets wick water, drywall stains, and mold risk climbs. If you live in Meridian (or anywhere in the Treasure Valley), the best protection is knowing what to do immediately and when to call a licensed plumber.
Cloverdale Plumbing has served the area since 1953 with 24/7 emergency plumbing support. This guide focuses on the first 15 minutes—because that window often determines whether you’re facing a quick repair or a major restoration.
The “Stop the Water” Priority List (in order)
1) Shut off water at the closest valve you can reach.
If a sink supply line is spraying, close the hot/cold shutoffs under the sink. If the toilet is overflowing, close the toilet angle stop behind it. If a hose bib or outdoor line is leaking, shut off that branch if you have one.
If a sink supply line is spraying, close the hot/cold shutoffs under the sink. If the toilet is overflowing, close the toilet angle stop behind it. If a hose bib or outdoor line is leaking, shut off that branch if you have one.
2) If you can’t isolate it, shut off the home’s main water.
In many Meridian homes, the main shutoff is near where the water line enters the house (sometimes in a mechanical room, crawl space, or utility closet). The City of Meridian recommends everyone in the household knows where that main shutoff is located before freezing weather hits. (meridiancity.org)
In many Meridian homes, the main shutoff is near where the water line enters the house (sometimes in a mechanical room, crawl space, or utility closet). The City of Meridian recommends everyone in the household knows where that main shutoff is located before freezing weather hits. (meridiancity.org)
3) If there’s any electrical risk, shut off power to the affected area.
Water near outlets, a water heater, a furnace, or a dishwasher power connection is a “pause and power down” situation. If you’re unsure, keep clear and call a pro.
Water near outlets, a water heater, a furnace, or a dishwasher power connection is a “pause and power down” situation. If you’re unsure, keep clear and call a pro.
4) Start damage control.
Use towels, a wet/dry vac, and buckets. Move items off the floor. Open cabinet doors under sinks to help surfaces dry.
Use towels, a wet/dry vac, and buckets. Move items off the floor. Open cabinet doors under sinks to help surfaces dry.
Quick “Did You Know?” Facts (that affect your water bill and your home)
A constantly running toilet can waste 200+ gallons per day. That’s not just annoying—it’s a true emergency for your water usage. (epa.gov)
Hard water causes scale. Hardness is primarily from calcium and magnesium, and “hard” water is typically 121–180 mg/L as calcium carbonate (with “very hard” above 180 mg/L). Scale can reduce efficiency in water heaters and narrow pipe interiors over time. (usgs.gov)
Outdoor plumbing freezes fast. The City of Meridian highlights that sprinkler pipes and backflow assemblies can freeze and break when temps drop below 32°F, and recommends winterization steps ahead of cold snaps. (meridiancity.org)
Step-by-Step: What to Do When You Have a Leak
Step 1: Identify “clean water” vs. “dirty water”
Water from a supply line (sink, toilet supply, water heater inlet) is typically clean. Water from a drain, toilet bowl, or floor drain backup may be contaminated. If you suspect a sewer backup, keep people and pets away and stop using all plumbing fixtures until it’s cleared.
Step 2: Shut off the right valve
If the leak is under a sink or behind a toilet, the fixture shutoff is usually fastest. If the leak is in a wall/ceiling or you can’t see it clearly, go straight to the main shutoff.
Step 3: Relieve pressure and reduce spread
After shutting off the main, open one cold faucet on the lowest level of the home to relieve pressure. Place a bucket under active drips and use towels to stop water from migrating under baseboards.
Step 4: Document the damage (quickly)
Take a few photos/video for your records. Then focus on drying. The faster you dry the area, the lower the risk of warping and secondary damage.
Step 5: Call for emergency plumbing support
A professional can locate the failure point, confirm if additional sections are compromised, and repair or replace components safely—especially when the leak is inside a wall, under slab, or tied to water heating equipment.
If you have frozen pipes: The City of Meridian specifically warns never to thaw a frozen pipe with an open flame. Use safe heat methods and call a plumber if you suspect a split line. (meridiancity.org)
Meridian & Treasure Valley Angle: Cold snaps, hard water, and busy households
Meridian winters create a predictable pattern: a warm stretch, then a sudden freeze. That’s when exposed lines (garage walls, exterior hose bibs, crawl spaces) can freeze—and when small weaknesses in older valves, supply lines, or fittings show up as leaks.
Add hard-water conditions (minerals like calcium and magnesium) and it’s common to see scale buildup that affects fixtures and water heater efficiency over time. If your hot water seems to run out faster than it used to, or you hear increased popping from the tank, a maintenance check can help prevent an after-hours emergency. (usgs.gov)
If you’re also planning a bathroom or kitchen update, it’s smart to treat plumbing as part of the remodel—new fixtures, updated shutoff valves, and right-sized drain venting can prevent the “new look, old problems” scenario.
Need an emergency plumber in Meridian right now?
If water is actively leaking, drains are backing up, or your water heater is flooding, don’t wait for “business hours.” Cloverdale Plumbing provides 24/7 emergency plumbing support across the Treasure Valley.
Request Service 24/7 Emergency Services
Tip: If you’re calling for an emergency, have your main shutoff location and a quick description of what you see (dripping, spraying, backing up, no hot water).
FAQ: Emergency Plumbing in Meridian, Idaho
What counts as a plumbing emergency?
Any situation where water is actively damaging the home (leaks, overflows), sewage is backing up, a pipe is frozen and you suspect a split, or a water heater is leaking. If shutting off a local valve doesn’t stop it, treat it as urgent.
If my toilet won’t stop running, is that really urgent?
Yes—because it can waste a surprising amount of water. EPA guidance notes a constantly running toilet can waste 200 gallons of water or more every day. Turning off the toilet’s shutoff valve can prevent runaway bills until it’s repaired. (epa.gov)
Should I use a chemical drain opener for an emergency clog?
If multiple fixtures are backing up, avoid chemicals and stop using water—this can be a main line issue. For single-fixture clogs, chemicals can sometimes create hazards for you and your plumber (and may damage certain piping). Professional drain cleaning or hot water jetting is often the safer, longer-lasting fix.
What’s the safest way to handle frozen pipes?
Keep the faucet slightly open, warm the area with safe heat (space heater at a distance, warm air circulation), and never use an open flame. The City of Meridian specifically warns against thawing pipes with open flame due to fire and damage risk. (meridiancity.org)
How can I prevent emergency calls during winter?
Insulate exposed lines, disconnect hoses, keep garage doors closed during cold snaps, and make sure every room with plumbing stays heated. Meridian’s winter tips also emphasize knowing your main shutoff location ahead of time. (meridiancity.org)
Glossary (Quick Definitions)
Angle stop: The small shutoff valve behind a toilet or under a sink that controls water to that fixture.
Main water shutoff: The primary valve that turns off water to the entire home.
Hydro jetting (hot water jetting): High-pressure water cleaning used to clear grease, scale, roots, and buildup in drain and sewer lines.
Scale: Mineral buildup (often from calcium/magnesium) that can form inside pipes and on water heater components. (usgs.gov)
Backflow assembly: A device used to prevent contaminated water from flowing back into the clean water supply (often associated with irrigation systems).