63/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 103 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Baltimore, MD (2026)
74 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Baltimore: Shilling septic, CR Score 63/100; 5.0★ from 103 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): A-1 Septic, posts 24/7 hours; ranked #2 of 74.
- 6
Most-reviewed: Prime Plumbing, 2,323 Google reviews at 4.8★, the most of 74 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
74 Baltimore septic service companies are ranked here by CR Score, from ten published factors. 31 are open 24/7, 44 open Saturdays and 36 open Sundays, based on posted hours. The median Google rating is 4.9★ across 74 rated businesses.
Top 10 septic service companies in Baltimore at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Shilling septic | 63 | 5.0★ (103) | Baltimore | 24/7 | Overall |
| 2 | A-1 Septic | 61 | 4.9★ (282) | Pasadena, 14 mi away | 24/7 | Emergencies |
| 3 | A & V Septic Services LLC | 61 | 4.9★ (210) | Pasadena, 14 mi away | 24/7 | — |
| 4 | Jet Septic and Plumbing Services | 59 | 5.0★ (321) | Westminster, 24 mi away | 24/7 | — |
| 5 | Chavis Septic Services | 59 | 4.9★ (321) | South Bel Air, 23 mi away | 24/7 | — |
| 6 | Prime Plumbing | 59 | 4.8★ (2,323) | Glen Burnie, 9 mi away | 24/7 | Most reviews |
| 7 | Mr. Rooter Plumbing of Greater Baltimore | 59 | 4.8★ (1,366) | Baltimore | Sat · Sun · Evenings | — |
| 8 | Sewer Slayer | 59 | 5.0★ (157) | Arbutus, 7 mi away | 24/7 | — |
| 9 | Mahon Plumbing | 58 | 4.9★ (268) | Baltimore | 24/7 | — |
| 10 | Abend Services | 57 | 4.8★ (175) | Baltimore | 24/7 | — |
The 74 best septic service companies in Baltimore, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
#2 A-1 Septic
Based in Pasadena, 14 mi away
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 282 Google reviews, listed on Google as “Septic system service”.
Based in Pasadena, 14 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 210 Google reviews, listed on Google as “Septic system service”.
Based in Westminster, 24 mi away
59/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 321 Google reviews, listed on Google as “Septic system service”.
Based in South Bel Air, 23 mi away
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 321 Google reviews, listed on Google as “Septic system service”.
Based in Glen Burnie, 9 mi away
59/100CR ScoreRanked #6 because of its Google rating and review volume: 4.8★ from 2,323 Google reviews, the most in Baltimore.
Based in Baltimore
59/100CR ScoreRanked #7 because of its Google rating and review volume: 4.8★ from 1,366 Google reviews.
#8 Sewer Slayer
Based in Arbutus, 7 mi away
59/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 157 Google reviews, listed on Google as “Plumber”.
Based in Baltimore
58/100CR ScoreRanked #9 because of its Google rating and review volume: 4.9★ from 268 Google reviews.
#10 Abend Services
Based in Baltimore
57/100CR ScoreRanked #10 because of its Google rating and review volume: 4.8★ from 175 Google reviews.
Based in Pasadena, 12 mi away
57/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Septic system service”.
Based in Baltimore
56/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.6★ from 93 Google reviews, listed on Google as “Septic system service”.
#13 RS Plumbing LLC
Based in Davidsonville, 23 mi away
56/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “Septic system service”.
Based in Baltimore
56/100CR ScoreRanked #14 because of its Google rating and review volume: 4.9★ from 1,738 Google reviews.
Based in Pasadena, 11 mi away
56/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.3★ from 13 Google reviews, listed on Google as “Septic system service”.
Based in Rosedale, 5 mi away
56/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.6★ from 60 Google reviews, listed on Google as “Plumber”.
Based in Perry Hall, 12 mi away
56/100CR ScoreRanked #17 because of its Google rating and review volume: 5.0★ from 1,896 Google reviews.
Based in Westminster, 24 mi away
56/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 1,057 Google reviews, listed on Google as “Septic system service”.
Based in Pasadena, 14 mi away
55/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.7★ from 12 Google reviews, listed on Google as “Septic system service”.
Based in Crofton, 20 mi away
55/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Septic system service”.
Based in Pasadena, 12 mi away
55/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Septic system service”.
Based in South Bel Air, 14 mi away
55/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.6★ from 10 Google reviews, listed on Google as “Septic system service”.
#23 Globe Sanitation
Based in Baltimore
55/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Septic system service”.
#24 Fogle's Septic
Based in Eldersburg, 21 mi away
54/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.0★ from 184 Google reviews, listed on Google as “Septic system service”.
Based in Baltimore
54/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.1★ from 9 Google reviews, listed on Google as “Plumber”.
Septic service companies ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 74 ranked septic service companies here; the rest are on their profiles.
Also serving Baltimore
18 more septic service companies within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| A & D Septic Services | 22 mi | |
| Accurate Environmental Services | In Baltimore | |
| Allen Plumber Sewer & Drain | 22 mi | |
| Baltimore | 15 mi | |
| Beetle Bayly Services | 1.0★ (1) | 22 mi |
| Bel Air Septic Service | 13 mi | |
| Capital City Sewer Services Inc | 5.0★ (1) | 20 mi |
| Chesapeake Bay Septic Tank | 20 mi | |
| Constipated Drain Sewer | 3.0★ (1) | In Baltimore |
| Dennis Bosley Services | 5.0★ (2) | 18 mi |
| Electric EEL Sewer & Drain Cleaning | 13 mi | |
| MB Matthews Septic Service LLC | 5.0★ (1) | 10 mi |
| Pasadena Septic Service | In Baltimore | |
| SERVPRO of Baltimore West | 5.0★ (5) | In Baltimore |
| Severn Septic Service | In Baltimore | |
| Shahan Enterprises Inc | 5.0★ (2) | 21 mi |
| The Home Depot | 4.2★ (1,003) | In Baltimore |
| Ultimate Septic & Construction | 10 mi |
How we ranked Baltimore septic service companies
We scored 74 Baltimore septic service companies on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 3, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Baltimore data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Septic service companies in Baltimore: frequently asked questions
Who is the best septic service company in Baltimore?
By CR Score, the highest-ranked septic service company in Baltimore, MD is Shilling septic with a CR Score of 63/100. It has 5.0★ from 103 Google reviews. It is open 24/7. A-1 Septic (#2) and A & V Septic Services LLC (#3) follow. We ranked 74 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Baltimore?
ContractorsRanked ranks 74 septic service companies serving Baltimore, MD. 12 of them are based in Baltimore; the rest serve it from nearby towns. Another 18 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Baltimore are open 24/7?
31 ranked septic service companies in Baltimore post 24/7 hours. The highest-ranked are Shilling septic (#1), A-1 Septic (#2) and A & V Septic Services LLC (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Baltimore work on weekends?
44 of 74 ranked septic service companies post Saturday hours and 36 post Sunday hours. The highest-ranked open Saturdays are Shilling septic (#1), A-1 Septic (#2) and A & V Septic Services LLC (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Baltimore septic service companies have?
The median Google rating among 74 rated septic service companies in Baltimore is 4.9★, with a median of 19 reviews. Prime Plumbing has the most, 2,323 reviews, and ranks #6. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank septic service companies?
Each septic service company gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do septic service companies outside Baltimore count in this ranking?
Yes, if they are within 25 mi of the Baltimore city center, our service radius for septic service companies. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Can septic service companies pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Baltimore
- November 2026: CR Scores recalculated for 74 septic service companies serving Baltimore.
More septic service companies and Baltimore pages
Septic service companies near Baltimore
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