56/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 887 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Bethesda, MD (2026)
54 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Bethesda: King & Sons Septic Service, LLC, CR Score 56/100; 5.0★ from 887 Google reviews.
- 2
Best for emergencies (open 24/7): Home Service Pros - Quality Sewer & Drain, posts 24/7 hours; ranked #2 of 54.
- 13
Most-reviewed: My Plumber Plus, 7,642 Google reviews at 4.7★, the most of 54 ranked; ranked #13.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
54 Bethesda septic service companies are ranked here by CR Score, from ten published factors. 18 are open 24/7, 35 open Saturdays and 24 open Sundays, based on posted hours. The median Google rating is 4.8★ across 54 rated businesses.
Top 10 septic service companies in Bethesda at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | King & Sons Septic Service, LLC | 56 | 5.0★ (887) | Gaithersburg, 17 mi away | — | Overall |
| 2 | Home Service Pros - Quality Sewer & Drain | 55 | 4.8★ (80) | Arlington, 8 mi away | 24/7 | Emergencies |
| 3 | RS Plumbing LLC | 55 | 5.0★ (51) | Davidsonville, 23 mi away | 24/7 | — |
| 4 | The Drain Fighter - Jetting & Drain Cleaning | 55 | 4.9★ (484) | Washington, D.C., 12 mi away | 24/7 | — |
| 5 | Home Service Pros - Quality Sewer & Drain | 55 | 5.0★ (181) | Springfield, 18 mi away | 24/7 | — |
| 6 | District Capital Services LLC | 55 | 4.9★ (269) | Washington, D.C., 9 mi away | 24/7 | — |
| 7 | Shilling Septic | 55 | 4.6★ (19) | Lake Shore, 14 mi away | 24/7 | — |
| 8 | Five Star Septic Inc. | 55 | 4.2★ (136) | Sterling, 17 mi away | 24/7 | — |
| 9 | Morgal Plumbing, Sewer & Water Line Repair | 54 | 5.0★ (41) | Alexandria, 9 mi away | 24/7 | — |
| 10 | B & P Environmental, A Wind River Company | 54 | 5.0★ (19) | Crofton, 22 mi away | 24/7 | — |
The 54 best septic service companies in Bethesda, 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.
Based in Arlington, 8 mi away
55/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.8★ from 80 Google reviews, listed on Google as “Plumber”.
Based in Davidsonville, 23 mi away
55/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “Septic system service”.
Based in Washington, D.C., 12 mi away
55/100CR ScoreRanked #4 because of its Google rating and review volume: 4.9★ from 484 Google reviews.
Based in Springfield, 18 mi away
55/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 181 Google reviews, listed on Google as “Plumber”.
Based in Washington, D.C., 9 mi away
55/100CR ScoreRanked #6 because of its Google rating and review volume: 4.9★ from 269 Google reviews.
Based in Lake Shore, 14 mi away
55/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.6★ from 19 Google reviews, listed on Google as “Septic system service”.
Based in Sterling, 17 mi away
55/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.2★ from 136 Google reviews, listed on Google as “Septic system service”.
Based in Alexandria, 9 mi away
54/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Plumber”.
Based in Crofton, 22 mi away
54/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Septic system service”.
Based in North Potomac, 13 mi away
54/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based in Damascus, 13 mi away
53/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 98 Google reviews, listed on Google as “Septic system service”.
#13 My Plumber Plus
Based in Manassas, 25 mi away
53/100CR ScoreRanked #13 because of its Google rating and review volume: 4.7★ from 7,642 Google reviews, the most in Bethesda.
#14 B.L. James & Son
Based in Arlington, 6 mi away
53/100CR ScoreRanked #14 because of its Google rating and review volume: 4.9★ from 383 Google reviews.
Based in Waldorf, 24 mi away
53/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 109 Google reviews, listed on Google as “Septic system service”.
Based in Columbia, 20 mi away
52/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.2★ from 16 Google reviews, listed on Google as “Septic system service”.
Based in Alexandria, 12 mi away
52/100CR ScoreRanked #17 because of its Google rating and review volume: 4.7★ from 159 Google reviews.
#18 Your 1 Plumber
Based in Germantown, 16 mi away
52/100CR ScoreRanked #18 because of its Google rating and review volume: 4.6★ from 314 Google reviews.
Based in Manassas Park, 23 mi away
51/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 93 Google reviews, listed on Google as “Septic system service”.
#20 Sams Creek
Based in Eldersburg, 14 mi away
51/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 41 Google reviews, listed on Google as “Septic system service”.
Based in Bowie, 17 mi away
51/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.7★ from 31 Google reviews, listed on Google as “Plumber”.
#22 Rooter-Man
Based in Silver Spring, 10 mi away
51/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 63 Google reviews, listed on Google as “Plumber”.
#23 c6 Environmental
Based in Edgewood, 14 mi away
51/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Septic system service”.
Based in Arnold, 24 mi away
51/100CR ScoreRanked #24 because of its Google rating and review volume: 5.0★ from 163 Google reviews.
Based in Burke, 15 mi away
50/100CR ScoreRanked #25 because of its Google rating and review volume: 4.8★ from 464 Google reviews.
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 54 ranked septic service companies here; the rest are on their profiles.
Also serving Bethesda
20 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 |
|---|---|---|
| Abbott's Septic Repair | 5.0★ (2) | 20 mi |
| Adams-Liming Septic Tank Services | 15 mi | |
| AITS Septic Repair Services | 15 mi | |
| Aits Septic Services Inc | 3.0★ (1) | 24 mi |
| American Septic Services | 5.0★ (2) | 22 mi |
| B&C Sewer and Drains Inc | 14 mi | |
| Clinton Sewer Expert, Inc. | 10 mi | |
| Hoovers Tank and Drain | 5.0★ (1) | 25 mi |
| J & L Plumbing | 5.0★ (2) | 12 mi |
| King & Sons Inc LLC | 1.0★ (1) | 8 mi |
| Lee's Septic Tank Services | 14 mi | |
| Monticello Well Pump Services | 5.0★ (2) | 18 mi |
| Plumbing - Clogged Drains & Sewer Pipes | 5.0★ (1) | 10 mi |
| Rei Drayco | 3.0★ (1) | 16 mi |
| Rocket Rooter Plumbing | 3.0★ (2) | 9 mi |
| Septic Locator | 12 mi | |
| The Home Depot | 4.1★ (1,646) | In Bethesda |
| Top Tier Trenchless Sewer and Water Line Repair | 5.0★ (1) | 15 mi |
| Vienna Septic Tank Services | 3.0★ (2) | 25 mi |
| Virginia Septic | 5.0★ (2) | 15 mi |
How we ranked Bethesda septic service companies
We scored 54 Bethesda 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 Bethesda 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 Bethesda: frequently asked questions
Who is the best septic service company in Bethesda?
By CR Score, the highest-ranked septic service company in Bethesda, MD is King & Sons Septic Service, LLC with a CR Score of 56/100. It has 5.0★ from 887 Google reviews. Home Service Pros - Quality Sewer & Drain (#2) and RS Plumbing LLC (#3) follow. We ranked 54 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Bethesda?
ContractorsRanked ranks 54 septic service companies serving Bethesda, MD. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Bethesda are open 24/7?
18 ranked septic service companies in Bethesda post 24/7 hours. The highest-ranked are Home Service Pros - Quality Sewer & Drain (#2), RS Plumbing LLC (#3) and The Drain Fighter - Jetting & Drain Cleaning (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Bethesda work on weekends?
35 of 54 ranked septic service companies post Saturday hours and 24 post Sunday hours. The highest-ranked open Saturdays are Home Service Pros - Quality Sewer & Drain (#2), RS Plumbing LLC (#3) and The Drain Fighter - Jetting & Drain Cleaning (#4). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Bethesda septic service companies have?
The median Google rating among 54 rated septic service companies in Bethesda is 4.8★, with a median of 28 reviews. My Plumber Plus has the most, 7,642 reviews, and ranks #13. 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 Bethesda count in this ranking?
Yes, if they are within 25 mi of the Bethesda 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 Bethesda
- November 2026: CR Scores recalculated for 54 septic service companies serving Bethesda.
- November 2026: 1 duplicate listing merged.
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