Published May 12, 2026 · Last updated October 21, 2026
Sewer & Main Line Plumbing in Baltimore, Maryland: 16 Top Pros (2027)
Quick answer
The top-ranked Plumbing provider in Baltimore is Warrior Plumbing & Heating (Baltimore), with a 4.9★ rating across 405 Google reviews and a ServiceAgent Score of 8.7/10. Also strongly rated: Benjamin Franklin Plumbing of Baltimore and Mahon Plumbing. See the full ranked list and how each provider scores below.
TL;DR
Ranked: 1. Warrior Plumbing & Heating · 2. Benjamin Franklin Plumbing of Baltimore · 3. Mahon Plumbing · 4. Roto-Rooter Plumbing & Water Cleanup · 5. Mr. Rooter Plumbing of Greater Baltimore
- 16 sewer & main line plumbing providers match in Baltimore, Maryland.
- Top pick: Warrior Plumbing & Heating (ServiceAgent Score 8.7/10).
- Median ServiceAgent Score: 8.4/10.
- 0 owner-verified listings.
- Filtered for Sewer & Main Line: sewer line repair + replacement.
Computed from the providers ranked on this page. Figures update with each data refresh.
At-a-glance: top 11 plumbing pros in Baltimore
Compare the top picks side-by-side. Full reviews of each below.
SA Score = ServiceAgent composite (0–10). Tap a row number to jump to the full review.
How the top plumbing pros compare
The same ServiceAgent Score components that drive the ranking, scored side by side — so you can see at a glance where each provider is strongest.
The criteria we scored against
- 1. Trust (data & verification). Owner-verification, completeness of contact info, and review-volume credibility.
- 2. Recommendation (rating). The Google star rating, Bayesian-shrunk toward the category mean so a few 5-star reviews can't dominate.
- 3. Review depth. How many public reviews back the rating — more reviews, more reliable the signal.
| Provider | Trust (data & verification) | Recommendation (rating) | Review depth |
|---|---|---|---|
| Warrior Plumbing & Heating | Strong | Strong | Strong |
| Benjamin Franklin Plumbing of Baltimore | Strong | Strong | Strong |
| Mahon Plumbing | Strong | Strong | Strong |
| Roto-Rooter Plumbing & Water Cleanup | Strong | Strong | Strong |
| Mr. Rooter Plumbing of Greater Baltimore | Strong | Strong | Strong |
| Catons Plumbing, Drains & Water Cleanup | Strong | Strong | Strong |
| Abbott Brothers Plumbing & Heating of Maryland | Strong | Strong | Strong |
| Trust Plumbing & Heating, LLC | Strong | Strong | Moderate |
How we chose these
Same scoring engine as the main Baltimore plumbing ranking, with an additional filter step: we look for Sewer & Main Line signals in each provider's business categories, service tags, and recent review text.
When the Sewer & Main Line filter would surface fewer than five providers, we fall back to showing top-rated plumbing pros generally - they are far more likely to handle sewer & main line work than an unrated provider would be.
Full formula on the methodology page.
16 Best Plumbing Companies Ranked
Ranked by composite ServiceAgent Score. 16 verified businesses match.
Best for: Homeowners who specifically want a plumber rather than a generalist.
| Location | Baltimore, MD · 4123 Roland Ave, Baltimore, MD 21211 |
|---|---|
| Established | Established (high review volume) |
| Specialization | Plumber |
| Rating | 4.9★ across 405 Google reviews |
| Status | Unclaimed listing (Google data) |
| Source | Public Google Business Profile · data as of May 12, 2026 |
The approach
Warrior Plumbing & Heating maintains a strong 4.9-star reputation across 405 reviews in Baltimore, suggesting consistent execution rather than a one-off lucky streak.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.9-star average across 405 reviews is in the top 5% of providers in Baltimore - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Our top pick in Baltimore. The 8.7/10 composite comes from a rare combination of review depth (405 reviews), a 4.9-star rating, and complete profile data.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (443) 967-3736 |
| Website | www.warriorplumbing.com |
Best for: Homeowners who specifically want a plumber rather than a generalist.
| Location | Baltimore, MD · 3702 Yosemite Ave, Baltimore, MD 21215 |
|---|---|
| Established | Established (high review volume) |
| Specialization | Plumber |
| Rating | 4.9★ across 328 Google reviews |
| Status | Unclaimed listing (Google data) |
| Source | Public Google Business Profile · data as of May 12, 2026 |
The approach
Benjamin Franklin Plumbing of Baltimore maintains a strong 4.9-star reputation across 328 reviews in Baltimore, suggesting consistent execution rather than a one-off lucky streak.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.9-star average across 328 reviews is in the top 5% of providers in Baltimore - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
A top-3 pick in this market on the composite score. Worth a quote alongside #1 to compare response time and pricing on your specific job.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (301) 691-3889 |
| Website | www.benjaminfranklinplumbing.com/baltimore/?utm_source=gbp&utm_medium=organic&utm_campaign=638253_-BF0018- |
Best for: Homeowners who specifically want a plumber rather than a generalist.
| Location | Baltimore, MD · 6824 Fort Smallwood Rd Ste. A, Baltimore, MD 21226 |
|---|---|
| Established | Established (high review volume) |
| Specialization | Plumber |
| Rating | 4.9★ across 271 Google reviews |
| Status | Unclaimed listing (Google data) |
| Source | Public Google Business Profile · data as of May 12, 2026 |
The approach
Mahon Plumbing maintains a strong 4.9-star reputation across 271 reviews in Baltimore, suggesting consistent execution rather than a one-off lucky streak.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.9-star average across 271 reviews is in the top 5% of providers in Baltimore - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
A top-3 pick in this market on the composite score. Worth a quote alongside #1 to compare response time and pricing on your specific job.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (410) 766-8566 |
| Website | www.marylandplumbingservices.com |
Best for: Homeowners who specifically want a plumber rather than a generalist.
| Location | Baltimore, MD · 516 N Charles St Ste 407, Baltimore, MD 21201 |
|---|---|
| Established | Established (very high review volume) |
| Specialization | Plumber |
| Rating | 4.8★ across 4,083 Google reviews |
| Status | Unclaimed listing (Google data) |
| Source | Public Google Business Profile · data as of May 12, 2026 |
The approach
Roto-Rooter Plumbing & Water Cleanup has built a high-volume operation in Baltimore, with 4,083 Google reviews averaging 4.8 stars. That kind of review velocity in a single market typically means a fleet-style operation with multiple crews and a predictable response window.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.8-star average across 4,083 reviews points to consistent on-time delivery and clear communication.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Ranked here because of high review depth at a strong rating - the kind of provider you can hire without doing 90 minutes of due diligence.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (410) 864-3030 |
| Website | www.rotorooter.com/baltimore/?utm_source=Google&utm_medium=organic&utm_campaign=gmb&utm_content=website |
Best for: Homeowners who specifically want a plumber rather than a generalist.
| Location | Baltimore, MD · 3701 Commerce Dr Ste 105, Baltimore, MD 21227 |
|---|---|
| Established | Established (very high review volume) |
| Specialization | Plumber |
| Rating | 4.8★ across 1,382 Google reviews |
| Status | Unclaimed listing (Google data) |
| Source | Public Google Business Profile · data as of May 12, 2026 |
The approach
Mr. Rooter Plumbing of Greater Baltimore has built a high-volume operation in Baltimore, with 1,382 Google reviews averaging 4.8 stars. That kind of review velocity in a single market typically means a fleet-style operation with multiple crews and a predictable response window.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.8-star average across 1,382 reviews points to consistent on-time delivery and clear communication.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Ranked here because of high review depth at a strong rating - the kind of provider you can hire without doing 90 minutes of due diligence.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (410) 692-8034 |
| Website | www.mrrooter.com/baltimore/?cid=LSTL_MRR000199&utm_source=gmb&utm_campaign=local&utm_medium=organic |
Best for: Homeowners who specifically want a plumber rather than a generalist.
| Location | Baltimore, MD · 616 Water St #316, Baltimore, MD 21202 |
|---|---|
| Established | Established (very high review volume) |
| Specialization | Plumber |
| Rating | 4.8★ across 567 Google reviews |
| Status | Unclaimed listing (Google data) |
| Source | Public Google Business Profile · data as of May 12, 2026 |
The approach
Catons Plumbing, Drains & Water Cleanup has built a high-volume operation in Baltimore, with 567 Google reviews averaging 4.8 stars. That kind of review velocity in a single market typically means a fleet-style operation with multiple crews and a predictable response window.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.8-star average across 567 reviews points to consistent on-time delivery and clear communication.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Ranked here because of high review depth at a strong rating - the kind of provider you can hire without doing 90 minutes of due diligence.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (410) 391-8746 |
| Website | www.callcatons.com/baltimore-plumber |
Best for: Homeowners who specifically want a plumber rather than a generalist.
| Location | Baltimore, MD · 3510 Keswick Rd, Baltimore, MD 21211 |
|---|---|
| Established | Established (high review volume) |
| Specialization | Plumber |
| Rating | 4.8★ across 365 Google reviews |
| Status | Unclaimed listing (Google data) |
| Source | Public Google Business Profile · data as of May 12, 2026 |
The approach
Abbott Brothers Plumbing & Heating of Maryland maintains a strong 4.8-star reputation across 365 reviews in Baltimore, suggesting consistent execution rather than a one-off lucky streak.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.8-star average across 365 reviews points to consistent on-time delivery and clear communication.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Ranked here because of high review depth at a strong rating - the kind of provider you can hire without doing 90 minutes of due diligence.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (410) 256-2027 |
| Website | abbottbrothersplumbing.com |
Best for: Homeowners who specifically want a plumber rather than a generalist.
| Location | Baltimore, MD · 6309 Fort Smallwood Rd Suite 5, Baltimore, MD 21226 |
|---|---|
| Established | Operating multiple years (moderate review history) |
| Specialization | Plumber |
| Rating | 5.0★ across 145 Google reviews |
| Status | Unclaimed listing (Google data) |
| Source | Public Google Business Profile · data as of May 12, 2026 |
The approach
Trust Plumbing & Heating, LLC maintains a strong 5.0-star reputation across 145 reviews in Baltimore, suggesting consistent execution rather than a one-off lucky streak.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
5.0-star average across 145 reviews is in the top 5% of providers in Baltimore - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Mid-tier ranking in this market. Quality looks reasonable but isn't a standout vs. the top 3 - use them if you can't get a quote from a higher-ranked provider in time.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (443) 269-8929 |
| Website | www.trustplumbingandheating.com |
Best for: Homeowners who specifically want a plumber rather than a generalist.
| Location | Baltimore, MD · 2010 Orleans St, Baltimore, MD 21231 |
|---|---|
| Established | Operating multiple years (moderate review history) |
| Specialization | Plumber |
| Rating | 5.0★ across 82 Google reviews |
| Status | Unclaimed listing (Google data) |
| Source | Public Google Business Profile · data as of May 12, 2026 |
The approach
Empire Plumbing and Heating LLC operates in Baltimore with 82 Google reviews at 5.0 stars - a steady mid-tier signal in our composite scoring.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
5.0-star average across 82 reviews points to consistent on-time delivery and clear communication.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Mid-tier ranking in this market. Quality looks reasonable but isn't a standout vs. the top 3 - use them if you can't get a quote from a higher-ranked provider in time.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (443) 630-9804 |
| Website | empireplumbingheating.com |
10. Abend Services
Best for: Homeowners who specifically want a plumber rather than a generalist.
| Location | Baltimore, MD · 407 Bon Air Ave, Baltimore, MD 21225 |
|---|---|
| Established | Operating multiple years (moderate review history) |
| Specialization | Plumber |
| Rating | 4.8★ across 176 Google reviews |
| Status | Unclaimed listing (Google data) |
| Source | Public Google Business Profile · data as of May 12, 2026 |
The approach
Abend Services maintains a strong 4.8-star reputation across 176 reviews in Baltimore, suggesting consistent execution rather than a one-off lucky streak.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.8-star average across 176 reviews points to consistent on-time delivery and clear communication.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Mid-tier ranking in this market. Quality looks reasonable but isn't a standout vs. the top 3 - use them if you can't get a quote from a higher-ranked provider in time.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (443) 516-9224 |
| Website | abendplumbingandheating.com/?utm_source=google&utm_medium=brooklyn-park-gbp |
Showing 10 of 16.
How to choose a plumbing pro
The ranking does the research; these five checks help you turn the shortlist into the right hire.
- 1
Start with the top of the ranking, not an ad
The providers ranked highest in Baltimore earned it on review depth, rating, and data completeness — not on ad spend. Shortlist two or three from the top before you start calling.
- 2
Get two or three quotes in writing
Pricing for plumbing work varies by scope and local market. Written quotes from a few shortlisted pros let you compare apples to apples and spot an outlier before you commit.
- 3
Read the most recent reviews, not just the average
A strong average can hide a recent slide in quality. Sort reviews by newest and look for how the business handles problems — a thoughtful reply to a bad review often tells you more than the star count.
- 4
Confirm licensing, insurance, and scope before work starts
Ask for the license number and proof of insurance, and get the full scope of work plus any parts/labor warranty in writing before any plumbing job begins. Verify the license on your state board if the work is significant.
- 5
Match the provider to your actual job
A high-volume operator is great for a routine job; a smaller specialist may be a better fit for an unusual one. Use the scorecard above to pick for your situation, not just the overall rank.
Trends this quarter
Pricing, demand, and provider trends — pulled from our Q4 2026 plumbing report.
- 14 plumbing providers tracked in Baltimore this quarter, with an average ServiceAgent Score of 8.4/10.
- 9 elite-tier providers (Score ≥ 8.5/10), and an average Google rating of 4.79★.
- Total review volume changed by -11.7% quarter-over-quarter — a leading indicator of local plumbing demand.
- Median quote price moved -5.2% vs. the previous quarter for typical plumbing jobs.
- 0% of providers are owner-verified (+3.3% QoQ).
Source: ServiceAgent Plumbing trends in Baltimore, Q4 2026. Quarterly methodology and full commentary available in the full report.
When demand peaks in Baltimore for plumbing
12-month demand index (100 = annual average). Peaks in January, troughs in September. Book in the trough months to lock lower rates.
Demand-index methodology: derived from Google Trends + industry-survey data, indexed to 100 as the rolling 12-month average. Local market may vary 10-25%.
Pricing: what plumbing costs
Quick budget estimates by job type. Use these as a planning sanity-check, not as a firm quote.
| Job | Low | High |
|---|---|---|
| Service call / diagnostic | $100 | $250 |
| Drain cleaning (snake) | $150 | $450 |
| Hydro-jet drain | $400 | $900 |
| Water heater replacement (tank) | $1,100 | $1,800 |
| Tankless water heater install | $2,200 | $4,500 |
Estimates based on industry-average labor + materials, adjusted for local market. Get at least two written quotes from providers above before signing.
What to know about hiring Plumbing
Plumbing jobs split into emergencies (leaks, clogs, no hot water) and planned work (re-pipes, fixture installs, water heaters).
What drives the price
Whether it's diagnostic vs. repair vs. replacement, access to the pipes, and emergency timing.
What to check
State plumbing license, insurance, and whether they give a flat quote after seeing the job rather than an hourly open-ended rate.
When to call
For a slow leak, sooner is cheaper — water damage escalates fast. Keep an emergency number on hand before you need it.
Why trust this list
This page narrows the full Baltimore plumbing directory to providers that explicitly serve sewer & main line requests. We surfaced them by scanning provider categories, service tags, and review text for relevant signals.
If you're looking at this page, you probably need sewer & main line plumbing now - so we've ordered the list by composite ServiceAgent Score and surfaced the response-time indicator on every card. Call the top three; the first to pick up usually wins the job.
Frequently asked questions
8 common questions about hiring a plumbing pro in this area.
Who offers sewer & main line plumbing in Baltimore?
Warrior Plumbing & Heating and 15 other plumbing businesses in Baltimore offer sewer & main line service. See the ranked list above; the top picks have the strongest combination of reviews, verification, and sewer & main line signals.
How fast can a sewer & main line plumbing pro arrive?
Response time varies by provider and current job load. Claimed listings display their average response window directly on the profile - aim for providers showing under-24-hour replies.
What does sewer & main line plumbing cost in Baltimore?
Cost depends on scope and materials. Get at least two written estimates - most Baltimore plumbing providers offer free quotes for sewer & main line work.
Are these providers licensed and insured?
Listings tagged with ✓ Licensed & insured have that signal in their provider data. Always verify directly with the provider before any work, and confirm coverage via your state license board.
How is this list different from the main Plumbing in Baltimore page?
This page is filtered to providers offering sewer & main line service specifically. The main Plumbing in Baltimore page lists every provider regardless of intent.
Who are the highest-rated plumbing providers in Baltimore?
Based on composite ServiceAgent Score, Warrior Plumbing & Heating in Baltimore ranks #1 (8.7/10). Benjamin Franklin Plumbing of Baltimore and Mahon Plumbing round out the top 3.
How does the ServiceAgent Score work?
It's a 0-10 composite of a Trust Score (40% - data quality, verification and review-volume credibility) and a Recommendation Score (60% - the Google rating Bayesian-shrunk toward the category mean using a 25-review prior). Full formula on the methodology page.
Are these listings verified?
Every listing is pulled from active Google Business Profile data. 0 of these 16 listings are currently ServiceAgent-verified (owners completed our claim flow). Verified listings get a green badge in the ranking.
Reports & insights
Pricing, demand, and provider trends for Baltimore — refreshed quarterly.
Plumbing trends in Baltimore, Q4 2026
Pricing, demand, and review-volume trends for plumbing providers in Baltimore.
Home-service trends in Baltimore, Maryland (Q4 2026)
Across every category, here's what's changing in the Baltimore home-service market this quarter.
State of Plumbing in Maryland, Q4 2026
Pricing trends, demand signals, and elite-tier shifts for plumbing providers across Maryland.
State of home services in Maryland, Q4 2026
Pricing, demand, and provider trends across every home-service category in Maryland.
State of Electricians in Maryland, Q4 2026
Pricing trends, demand signals, and elite-tier shifts for electricians providers across Maryland.
State of Roofing in Maryland, Q4 2026
Pricing trends, demand signals, and elite-tier shifts for roofing providers across Maryland.
Verify any provider's license in Maryland
Always confirm a contractor is in good standing before hiring. Maryland uses the Maryland Home Improvement Commission (MHIC). Search by license number, business name, or address.
Own a business in this list? Claim it free.
Get a verified green badge, edit your description, upload real photos, and bump your placement in this and 11 other category lists. Takes under 2 minutes.
- ✓Verified badge next to your name
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- ✓2-minute phone-based verification
Fill out the verification form right here. We'll match it to your Google Business Profile and confirm by phone within one business day.
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About the author
Written by
Growth & Product Marketing, ServiceAgent
Shaambhav Shankar works in product marketing at SaaS Labs, the company behind ServiceAgent, and describes himself as a marketing generalist with six years of experience in SaaS. He studied at Symbiosis International University and is based in the Greater Delhi Area. He writes the bulk of the ServiceAgent blog, covering call answering, CRM and the operational side of running a home services business, and authors and maintains the ServiceAgent Directory rankings.
Credentials
- Symbiosis International University (2016-2019)
- Digital Marketing, Google India (2020)
- Financial Modelling and Valuation, Ernst & Young (2019)
- Building with the Claude API, Anthropic (2026)
- AI Fluency for Builders, Anthropic (2026)
- Introduction to Model Context Protocol, Anthropic (2026)
Greater Delhi Area, India · 6 years experience
Every ranking on this page is written and maintained by Shaambhav Shankar, who owns the ranking methodology and verifies each provider listing against public data. No pay-to-rank, no sponsored placements. Read our methodology →
Update history
- October 21, 2026 — Latest ranking refresh. Composite ServiceAgent Scores recomputed from current Google review data.
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