Clear
When something blocks the view or the flow, we clear what is accessible and appropriate.
Residential sewer diagnostics
Recurring Sewer Backup Diagnosis
When a sewer backup keeps coming back, clearing it again does not tell you why. Recurring sewer backup diagnosis documents what a camera can see inside the accessible line, with cleaning first when something blocks the view, so you can decide next steps with evidence.
We provide cleaning, camera diagnostics, and line locating only. We do not provide sewer repair, replacement, lining, excavation, or pipe installation.
- Accessible residential sewer and drain lines
- Cleaning when it is needed to see the line or restore flow
- Camera video and written findings you can keep
- No repair, excavation, or replacement work offered
Service
Recurring Sewer Backup Diagnosis
Request a sewer backup diagnosis
Tell us what keeps happening. We will help you choose between cleaning, a camera inspection, or both.
Step 1 of 4
The short answer
What is recurring sewer backup diagnosis?
Recurring sewer backup diagnosis is the process of inspecting the accessible sewer line to identify visible conditions that may cause repeated wastewater backups, such as obstructions, root intrusion, deposits, joint displacement, or pipe damage.
It generally combines a review of your symptoms and access, cleaning when flow or visibility is blocked, a recorded camera inspection, optional electronic locating, and written findings. Cleaning clears an accessible restriction. A camera documents what is visible. Locating estimates where an observed point sits at the surface. They are separate jobs that can be combined.
A diagnosis documents evidence. It does not promise a definitive answer in every property, and it does not repair anything.
This service is designed for accessible residential sewer and drain lines. Equipment selection and available service depend on the entry point, pipe size, line condition, and scope of work. We provide cleaning, camera diagnostics, and line locating only. We do not provide sewer repair, replacement, lining, excavation, or pipe installation.
Why people call
When a recurring backup may be worth diagnosing
A repeated backup, especially after the line has been cleared before, is a reason to look at the accessible line instead of clearing it again. Public utilities point to the signs below.
The same clog returns
A recurring restriction can come from roots, grease, wipes, debris, a sag, or a deteriorated lateral, not only from a one-time blockage at a fixture.
Several fixtures drain slowly at once
Slow drainage in more than one fixture is listed by public agencies as a warning sign of a larger drain or sewer lateral issue.
A drain backs up when another fixture is used
Utilities describe this pattern as a sign of a larger drain or lateral issue. One city says a sewer that backs up only when a faucet runs or a toilet flushes may involve the private lateral.
Gurgling from drains, toilets, or pipes
Utilities list it as a warning sign that may warrant professional evaluation.
Sewage odors indoors or near a cleanout
Utilities list these as warning signs of a damaged line, a drain problem, or a backup condition.
Wastewater at a cleanout or outside drain
Sewage coming from a cleanout, or water leaking from a cleanout or outside drain, is listed as a sign of sewer trouble.
A yard patch that stays wet
Some municipal programs advise lateral inspection for persistently wet yard areas. Wet areas can also relate to septic systems or other wastewater infrastructure, so they do not prove a sewer problem.
These signs can have more than one cause. A diagnosis documents the condition of the accessible line rather than assuming the cause.
Common causes
What commonly causes a sewer to back up again and again?
Public utility guidance names the conditions below. Which one applies to your line cannot be known without looking, and more than one can be present.
- Roots entering through failed joints or cracks, which can grow into a blockage
- Grease that hardens and builds up on pipe walls
- Wipes and other items that do not break down like toilet paper, including products labeled "flushable"
- A sag or belly where wastewater and solids can collect
- Cracks, broken pipe, or offset and separated joints
- A defective connection between the lateral and the main
- A collapsed section
Cleaning can remove material such as roots, grease, sand, and debris. It does not repair the opening a root came through, a sag, or a damaged joint. Those are conditions a camera may document and a cleaning does not change.
Evidence and its limits
What a camera can document, and what it cannot confirm
Camera diagnostics document visible conditions in the accessible portion of the line. Results can be limited by access, pipe geometry, obstructions, water level, image quality, and camera reach.
A camera may document
When visible in the part of the line it reached
- Obstructions, deposits, and debris
- Root intrusion
- Cracks, fractures, holes, and broken pipe
- Offset or separated joints
- Deformation
- Standing water and an apparent sag, as an observation
- Visible connections and visible infiltration
- A collapse, if the camera reaches it
It cannot confirm by footage alone
Where a camera view stops
- Pipe surface below the waterline
- Wall thickness, structural capacity, or remaining pipe life
- Pipe slope
- The soil around the pipe, or voids
- Every external leak path
- Any section the camera could not reach or see
- That a standing-water level means a true sag. Water level can also come from flow, submerged deposits, or an obstruction
Defect identification also depends on image quality and on how the footage is interpreted. A clear camera path does not show that unviewed, submerged, or inaccessible sections are free of defects.
What happens on the day
What happens during a recurring backup diagnosis
The steps below describe a typical diagnosis. What yours includes depends on the line, the entry point, and the scope of work.
Step 1: Symptoms and access
The symptoms and the available entry point are reviewed. The most common entry point is a cleanout.
Step 2: Clearing, when needed
A camera cannot see under water or through a blockage. If flow, standing water, or debris keeps the camera from viewing the line, cleaning may come first. The cleaning method depends on the observed line condition.
Step 3: Camera inspection
A camera is advanced downstream from the access point and the run is recorded. Where it cannot pass, that part of the line is not viewed.
Step 4: Locating, when included
When a camera with a compatible sonde is used, a receiver at the surface can estimate where an observed point sits. Ask whether locating is part of your visit.
Step 5: Findings
Written findings are included. Ask that they say what was viewed, what could not be viewed, and why.
Step 6: Your decision
You decide next steps with that record in hand. The Sewer Pros does not sell repair or replacement.
Access and preparing for your visit
- The most common entry point is a cleanout. Whether one exists, and where it is, depends on your plumbing layout and on the code that applied when the home was built or remodeled.
- Other entry points may be possible, depending on the property and the equipment. Ask what applies to yours.
- Leave clear working space around the cleanout and let us know where it is, indoors or outdoors.
- Tell us what keeps happening, how often, and what has been tried.
- Ask whether you should avoid running water during the visit.
Which service fits
Cleaning, camera inspection, or locating: which does a repeat backup need?
A repeat backup can need one, two, or all three. Each answers a different question.
| Service | What it does | What it does not do |
|---|---|---|
| Sewer cleaning and hydro jetting | Removes an accessible restriction such as grease, roots, sand, or debris so flow can return and the camera can see | Does not document pipe condition on its own, and does not repair defects |
| Sewer camera inspection | Documents visible conditions inside the accessible line, with recorded video | Does not clear a blockage, and does not measure slope, wall thickness, or soil support |
| Sewer line locating | Estimates the surface position and approximate depth of a point in an accessible line, such as where the camera stopped | It is an estimate, not a survey, utility clearance, or permission to dig |
Is hydro jetting part of every visit?
Hydro jetting is condition-dependent. It is not automatically appropriate for every pipe material, blockage, or visible defect, and it does not repair pipe defects. Whether jetting, cable cleaning, or no cleaning fits your line depends on what is found. Pipe damage is possible whenever powerful cleaning equipment is used, and tools should be matched to the condition of the pipe.
Where to start
- If a blockage is stopping flow or hiding the line, cleaning may need to come first.
- If the backup has returned after cleaning, a camera inspection documents what is visible once the line is clear.
- If a camera shows a visible condition and you need to know where it sits on your property, locating may be added when the equipment supports it.
Independent by design
Major sewer decisions deserve clear evidence.
Document
You receive the inspection video when a camera is used, and written findings.
Decide
You plan next steps with that evidence. The Sewer Pros does not sell repair or replacement.
If the footage shows a significant condition, further evaluation may be appropriate outside our cleaning and diagnostic scope. If someone has recommended costly work, ask for the evidence, get multiple written estimates, and ask why they differ. Consider showing the video to another inspection company for a second opinion before agreeing.
Before you book
What to ask for, and what to keep
What is included can vary by appointment. Ask before you book, and keep what you receive.
The full video
When a camera is used, you receive the inspection video.
Written findings
Written findings are included.
The access point used and how far the camera traveled
Footage references for where a blockage or condition was found
The conditions that were visible, and what could not be viewed and why
Locate notes, if locating was performed
Treat any depth as an estimate.
Your invoice and service record
Why keep them
Retained video can be useful for comparison if the line changes over time, for a municipal review, and for comparing proposals before major work. Depending on local program rules or transaction requirements, it may also help in a property sale. Video does not by itself establish liability, coverage, or the need for a particular repair method.
Related situations
If your situation is a little different
Landlords and small property owners
Keep the video, written findings, and notes with the work order and tenant communication. Tenant notice and unit entry depend on your lease and local law.
Home buyers and sellers
A recurring backup history matters when buying or selling. A pre-purchase sewer inspection focuses on the visible condition of the line before a purchase. Local point-of-sale requirements vary.
Real estate agents and home inspectors
A sewer scope is generally a visual inspection. Treat the scope video and findings as separate documents from the home inspection, subject to your contract and disclosure requirements. We do not give legal advice.
Service areas
Recurring sewer backup diagnosis service areas
Choose your market for local service details and scheduling options.
St. Louis, MO
Residential sewer diagnostics across the St. Louis area.
Las Vegas, NV
Residential sewer diagnostics across the Las Vegas Valley.
What our customers say
4.9 out of 5from 595 Google reviews · as of
Questions
Recurring sewer backup questions
The basics
What is recurring sewer backup diagnosis?
Recurring sewer backup diagnosis is the process of inspecting the accessible sewer line to identify visible conditions that may cause repeated wastewater backups, such as obstructions, root intrusion, deposits, joint displacement, or pipe damage. It generally combines a symptom and access review, cleaning when flow or visibility is blocked, a recorded camera inspection, optional locating, and written findings. It documents what was visible. It does not repair anything.
Why does my sewer keep backing up?
Public utility guidance names grease, roots, wipes and other debris, sags or bellies, cracks, broken or separated joints, defective connections, and collapse among the potential causes. Which one applies to your line cannot be known without looking. A camera inspection can document visible conditions in the accessible part of the line, but it cannot see every possible cause.
Why does my sewer back up again after it was cleared?
Cleaning can remove roots, grease, sand, and debris that restrict flow, but it does not by itself establish pipe-wall condition, joint condition, slope, soil support, or the condition of sections nobody viewed. A restriction that returns can mean the cause is still there. A camera inspection helps document what is visible once the line is clear. It cannot promise the clog will not return.
How do I know if the backup is in my sewer line or just one drain?
Backups or slow drainage in more than one fixture, drains that respond when other fixtures are used, and a backup only when water runs can point to a larger drain or sewer lateral issue. These patterns do not prove the cause without an inspection.
Can grease or "flushable" wipes cause a sewer backup?
Yes. Utilities report that fats, oils, and grease can harden, stick to the inside of pipes, and build up into a blockage. Wipes do not break down like toilet paper, including products labeled "flushable." EPA and city utilities advise putting wipes in the trash, not the toilet.
Can tree roots cause a recurring sewer backup?
Yes. Roots can enter an aging lateral through failed joints or cracks and grow into a blockage. A camera may document visible root intrusion. Cleaning can remove roots, but it does not repair the opening they came through.
Is a recurring backup the city's problem or mine?
It depends on where the problem is and on local rules. Camera findings apply only to the accessible segment that was inspected and do not by themselves establish responsibility. One city reports that most backups come from blockages in the home's plumbing or private lateral, but that is local guidance, not a rule everywhere. Ask your sewer utility or municipality where private responsibility ends for your property.
What is the difference between drain cleaning, hydro jetting, and a camera inspection?
Cleaning restores flow or removes debris. A camera inspection documents the visible condition of accessible pipe. Locating can estimate where the camera head sits at the surface. Each is a separate service, and they can be combined.
What the camera can show
What can a sewer camera see?
When visible in the accessible line, a camera can document roots, deposits, obstructions, cracks, fractures, holes, broken pipe, deformation, offset or separated joints, connections, infiltration, standing water, and collapse. What it records depends on access, water level, image quality, and how far the camera could travel.
Can a sewer camera find the exact cause of a backup?
Not always. A camera documents visible in-pipe conditions. It cannot see below the waterline or determine wall thickness, soil support, pipe slope, or every external leak path. Results also depend on access, camera reach, image quality, and interpretation. A diagnosis documents evidence. It does not promise a definitive answer in every property.
Can a sewer camera see through standing water?
No. A camera cannot see under water, so a line that is blocked and not draining may not be viewable until flow is restored. EPA notes that camera inspection generally shows only the pipe surface above the waterline. Cleaning may need to come first, and a follow-up view may be needed once the water level drops.
Does standing water on the video mean there is a belly or sag?
Not necessarily. A water-level change can come from increased flow, submerged deposits, or an obstruction rather than a true sag. NASSCO says a true water-level sag needs a documented start, deepest point, and end, and basic camera systems do not measure slope. An apparent sag is an observation that may need a clearer view after cleaning or at lower flow.
Can a camera tell me if my sewer pipe is about to fail?
No. A camera does not provide structural wall-integrity or wall-thickness data. Standardized condition grades describe individual observed defects and their severity. They are not a prediction of pipe life or a prescribed repair.
Can the camera get past bends, roots, or a collapse?
Sometimes. EPA identifies bends, deflections, blockages, and protruding service connections as limits on viewing and movement. A camera can document a visible collapse if it reaches it, but may not pass it. Where the camera cannot pass, that part of the line is not viewed, and the findings should say so.
Can a diagnosis show where the problem is from above ground?
When a camera with a compatible sonde is used, a receiver at the surface can estimate the position of the camera head and its approximate depth. That is an estimate affected by signal, soil, pipe material, nearby utilities, concrete, rebar, and interference. It is not a survey, utility clearance, or permission to dig. Ask whether locating is part of your visit. See sewer line locating.
Cleaning
Do you clear the line before running the camera?
It depends on the line. A camera cannot see under water, so a blocked, water-filled line may need to be cleared first. Public utility guidance says camera inspection is often most useful after a blockage is cleared. If flow or debris keeps the camera from viewing enough of the pipe, cleaning or flow control may be needed before a usable view is possible. Cleaning and camera inspection are separate services that may be combined.
If the line is clear after cleaning, is the pipe healthy?
Not necessarily. Cleaning can restore flow, but it does not independently establish wall condition, joint condition, slope, soil support, or whether every section was accessible. A camera inspection documents the visible condition of the accessible pipe.
Will hydro jetting damage my sewer line, and is it safe for older pipe?
Hydro jetting is condition-dependent. It is not automatically appropriate for every pipe material, blockage, or visible defect. EPA notes that pipe damage is possible whenever powerful cleaning equipment is used, that eroded, corroded, or deteriorated pipe may collapse during cleaning, and that tools should be matched to pipe condition. ASTM publishes material-specific cleaning practices and says procedures for other materials should be checked against the pipe manufacturer's guidance. Whether jetting, cable cleaning, or no cleaning fits your line depends on what is found. Jetting does not repair pipe defects. See hydro jetting.
The visit and your records
Where does the camera go in? Do I need a cleanout?
Most often a cleanout, where one is accessible. Whether one exists, and where, depends on the plumbing layout, and cleanout requirements depend on the code edition and local amendments that applied. Other entry points may be possible depending on the property and the equipment. Ask what applies to your property before you book.
Will I get video and written findings?
When a camera is used, you receive the inspection video. Written findings are included. Ask what else is included for your visit, including any locate notes. Ask about delivery format and timing when you request service.
What should I ask for after a camera inspection?
Ask for the full video, written findings, the access point used, how far the camera traveled, footage references for where a condition or blockage was found, the conditions that were visible, what could not be viewed and why, and any locate notes. Keep them with your invoice before comparing proposals for major work.
What do PACP and LACP grades mean?
PACP and LACP are NASSCO programs for standardized condition coding of pipes and laterals. Each observed defect receives a grade from 1 (minor) to 5 (most significant). A grade describes an individual observation, not pipe life or a specific repair. Whether a provider supplies standardized coding varies. Ask what format your findings take.
How long does it take, and how much does it cost?
Time and cost depend on access, line length and pipe size, how much obstruction is present, whether cleaning is needed, and whether locating and video are included. We do not publish a standard time or price on this page. Ask about a free estimate before scheduling.
Can you come the same day, and is this emergency service?
Same-day appointments can be arranged when scheduling permits, Monday through Friday, 8:00am to 4:00pm. Not available on weekends. We do not offer 24/7 or emergency service.
Decisions and property
What if the camera shows something serious?
The findings should identify what was observed and what could not be confirmed. NASSCO says high structural grades typically require engineering assessment, while operation-and-maintenance conditions can lead to maintenance such as cleaning. Further evaluation may be appropriate outside our cleaning and diagnostic scope. The Sewer Pros does not provide sewer repair, replacement, lining, excavation, or pipe installation.
Should I get a second opinion before approving major sewer work?
Municipal and federal consumer guidance advises it. One city utility advises showing the inspection video to another inspection company before agreeing to costly work. The FTC advises getting multiple written estimates and asking why they differ. Keeping the full video and written findings makes that possible.
How often should a sewer line be inspected?
There is no single schedule. Some utilities recommend routine camera inspection and others use condition-based or locally required cycles. Properties with recurring backups, frequent clogs, sewage odors, older or root-prone laterals, or earlier inspection limitations may need assessment sooner. Check local requirements with your utility or municipality.
Can I use the sewer video for a sale or a city review?
It can help. Retained video can support a municipal review or claim and gives a baseline to compare over time, and some local programs require an inspection report at sale. Video does not by itself establish liability, coverage, or a negotiation outcome. Requirements are local, and we do not give legal advice.
Should I get a sewer scope before buying a house?
Some real estate associations advise buyers to obtain a camera inspection of the sewer lateral as part of property investigation, and some local programs require an inspection at sale. Whether it makes sense for your purchase depends on the property and your contract. A pre-purchase sewer inspection focuses on the visible condition of the line before you buy. See pre-purchase sewer inspection.
Keep reading
Sewer Camera Inspection
What a camera may show, and what it cannot confirm.
Sewer Cleaning & Camera Inspection
Review visible line conditions and address an appropriate restriction when warranted.
Pre-Purchase Sewer Inspection
A focused look at the line before you buy.
Request service
Request a sewer backup diagnosis
Choose your service area and tell us what keeps happening. Ask about a free estimate before scheduling.
This service is designed for accessible residential sewer and drain lines. Equipment selection and available service depend on the entry point, pipe size, line condition, and scope of work. We provide cleaning, camera diagnostics, and line locating only. We do not provide sewer repair, replacement, lining, excavation, or pipe installation.
Request service
Step 1 of 4