59/100CR Score
Ranked #1 because of its Google rating and review volume: 4.7★ from 7,642 Google reviews, the most in Manassas.
Best Septic Service Companies in Manassas, VA (2026)
36 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Manassas: My Plumber Plus, CR Score 59/100; 4.7★ from 7,642 Google reviews; open 7 days a week.
- 2
Best for emergencies (open 24/7): Ace Contracting, posts 24/7 hours; ranked #2 of 36.
- 7
Most-reviewed: Marines Service Co., 1,169 Google reviews at 4.9★, the most of 36 ranked after My Plumber Plus; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
36 Manassas septic service companies are ranked here by CR Score, from ten published factors. 11 are open 24/7, 23 open Saturdays and 16 open Sundays, based on posted hours. The median Google rating is 4.8★ across 36 rated businesses.
Top 10 septic service companies in Manassas at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | My Plumber Plus | 59 | 4.7★ (7,642) | Manassas | Sat · Sun · Evenings | Overall |
| 2 | Ace Contracting | 57 | 5.0★ (4) | Manassas | 24/7 | Emergencies |
| 3 | All American Jetting & Drain Services | 57 | 4.9★ (687) | Manassas | Sat · Sun · Evenings | — |
| 4 | Advantage Septic Service | 57 | 4.8★ (151) | Manassas | — | — |
| 5 | Haynes Plumbing Sewer and Water Services | 56 | 4.9★ (844) | Aquia Harbour, 19 mi away | 24/7 | — |
| 6 | United Rentals - Reliable Onsite Services | 56 | 5.0★ (93) | Manassas Park, 3 mi away | — | — |
| 7 | Marines Service Co. | 56 | 4.9★ (1,169) | Manassas | Sat · Evenings | Most reviews |
| 8 | Home Service Pros - Quality Sewer & Drain | 56 | 5.0★ (181) | Springfield, 15 mi away | 24/7 | — |
| 9 | United Site Services | 56 | 4.7★ (70) | Gainesville, 7 mi away | Sat · Evenings | — |
| 10 | Extreme PSI, LLC | 55 | 5.0★ (35) | Linton Hall, 14 mi away | Sat · Sun | — |
The 36 best septic service companies in Manassas, 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 Manassas
57/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based in Manassas
57/100CR ScoreRanked #3 because of its Google rating and review volume: 4.9★ from 687 Google reviews.
Based in Manassas
57/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 151 Google reviews, listed on Google as “Septic system service”.
Based in Aquia Harbour, 19 mi away
56/100CR ScoreRanked #5 because of its Google rating and review volume: 4.9★ from 844 Google reviews.
Based in Manassas Park, 3 mi away
56/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 93 Google reviews, listed on Google as “Septic system service”.
Based in Manassas
56/100CR ScoreRanked #7 because of its Google rating and review volume: 4.9★ from 1,169 Google reviews.
Based in Springfield, 15 mi away
56/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 181 Google reviews, listed on Google as “Plumber”.
Based in Gainesville, 7 mi away
56/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.7★ from 70 Google reviews, listed on Google as “Septic system service”.
#10 Extreme PSI, LLC
Based in Linton Hall, 14 mi away
55/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Septic system service”.
#11 Shilling Septic
Based in Lake Shore, 13 mi away
55/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.6★ from 19 Google reviews, listed on Google as “Septic system service”.
Based in Sterling, 16 mi away
55/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.2★ from 136 Google reviews, listed on Google as “Septic system service”.
Based in Manassas
55/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.4★ from 168 Google reviews, listed on Google as “Septic system service”.
#14 Broke Brothers
Based in Leesburg, 11 mi away
54/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Septic system service”.
#15 Septic star dmv
Based in Dale City, 9 mi away
54/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Septic system service”.
Based in Manassas
53/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Septic system service”.
#17 SeptiClean Inc
Based in Manassas
53/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.1★ from 19 Google reviews, listed on Google as “Septic system service”.
Based in Arlington, 20 mi away
52/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.8★ from 80 Google reviews, listed on Google as “Plumber”.
Based in Alexandria, 21 mi away
52/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Plumber”.
#20 Sams Creek
Based in Eldersburg, 13 mi away
52/100CR 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 Manassas
52/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Septic system service”.
#22 c6 Environmental
Based in Edgewood, 13 mi away
51/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Septic system service”.
Based in Fairfax, 11 mi away
51/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.8★ from 24 Google reviews, listed on Google as “Septic system service”.
Based in Burke, 12 mi away
51/100CR ScoreRanked #24 because of its Google rating and review volume: 4.8★ from 464 Google reviews.
Based in Bowie, 2 mi away
51/100CR ScoreRanked #25 because of its Google rating and availability: 5.0★ from 7 Google reviews, open 24/7.
All 36 septic service companies
#1 to #25 are shown in full above. Here are #26 to #36, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Emerald Plumbing Co. | 49 | 4.7★ (159) | 24 mi |
| 27 | JFK Plumbing Repair and Drain Service | 49 | 4.8★ (13) | 13 mi |
| 28 | Beltway Sewer & Plumbing Services | 49 | 4.8★ (45) | 18 mi |
| 29 | B.L. James & Son | 49 | 4.9★ (383) | 23 mi |
| 30 | Catoctin Environmental | 48 | 4.8★ (24) | 25 mi |
| 31 | Able Plumbing, Inc. | 48 | 4.5★ (35) | 14 mi |
| 32 | Stoney's Plumbing | 47 | 5.0★ (290) | 25 mi |
| 33 | Sonny's Septic & Excavating | 46 | 3.7★ (3) | 23 mi |
| 34 | Monticello Well Pump Services - Leesburg, VA | 45 | 5.0★ (4) | 25 mi |
| 35 | Benjamin Franklin Plumbing of Northern Virginia | 45 | 4.5★ (62) | 23 mi |
| 36 | Seal Tight Plumbing | 43 | 4.6★ (11) | 13 mi |
Also serving Manassas
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 |
|---|---|---|
| Abbott's Septic Repair | 5.0★ (2) | In Manassas |
| Adams-Liming Septic Tank Services | 21 mi | |
| AITS Septic Repair Services | 16 mi | |
| Aits Septic Services Inc | 3.0★ (1) | 10 mi |
| American Septic Services | 5.0★ (2) | 13 mi |
| Badger Daylighting Hydroexcavation | 4.2★ (6) | In Manassas |
| Bbs septic service | 23 mi | |
| EA Plumbing - Residential Plumbing Repair Contractor, Pipe and Sewer Repair in Manassas, VA | 5.0★ (1) | 1 mi |
| Hoovers Tank and Drain | 5.0★ (1) | In Manassas |
| J & L Plumbing | 5.0★ (2) | 15 mi |
| Kingdom Services Plumbing & Electrical | 5.0★ (25) | In Manassas |
| Monticello Well Pump Services | 5.0★ (2) | 13 mi |
| Northeastern Supply | 4.8★ (8) | In Manassas |
| Nova Liquid Enviornmental | 16 mi | |
| Septic Locator | 24 mi | |
| topsoil | In Manassas | |
| Vienna Septic Tank Services | 3.0★ (2) | 14 mi |
| Virginia Septic | 5.0★ (2) | 11 mi |
How we ranked Manassas septic service companies
We scored 36 Manassas 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 Manassas 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 Manassas: frequently asked questions
Who is the best septic service company in Manassas?
By CR Score, the highest-ranked septic service company in Manassas, VA is My Plumber Plus with a CR Score of 59/100. It has 4.7★ from 7,642 Google reviews. It is open 7 days a week. Ace Contracting (#2) and All American Jetting & Drain Services (#3) follow. We ranked 36 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Manassas?
ContractorsRanked ranks 36 septic service companies serving Manassas, VA. 9 of them are based in Manassas; 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 Manassas are open 24/7?
11 ranked septic service companies in Manassas post 24/7 hours. The highest-ranked are Ace Contracting (#2), Haynes Plumbing Sewer and Water Services (#5) and Home Service Pros - Quality Sewer & Drain (#8). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Manassas work on weekends?
23 of 36 ranked septic service companies post Saturday hours and 16 post Sunday hours. The highest-ranked open Saturdays are My Plumber Plus (#1), Ace Contracting (#2) and All American Jetting & Drain Services (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Manassas septic service companies have?
The median Google rating among 36 rated septic service companies in Manassas is 4.8★, with a median of 41 reviews. My Plumber Plus has the most, 7,642 reviews, and ranks #1. 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 Manassas count in this ranking?
Yes, if they are within 25 mi of the Manassas 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 Manassas
- November 2026: CR Scores recalculated for 36 septic service companies serving Manassas.
More septic service companies and Manassas pages
Septic service companies near Manassas
- Septic service companies in Manassas Park, VA38 ranked
- Septic service companies in Buckhall, VA34 ranked
- Septic service companies in Sudley, VA37 ranked
- Septic service companies in Bull Run, VA35 ranked
- Septic service companies in Linton Hall, VA33 ranked
- Septic service companies in Centreville, VA42 ranked
- Septic service companies in Gainesville, VA34 ranked
- Septic service companies in Fairfax Station, VA46 ranked
- Septic service companies in Chantilly, VA44 ranked
- Septic service companies in Lake Ridge, VA39 ranked
Other trades in Manassas
- Roofers in Manassas1108 ranked
- Plumbers in Manassas551 ranked
- Electricians in Manassas474 ranked
- HVAC contractors in Manassas738 ranked
- General contractors in Manassas1058 ranked
- Painters in Manassas340 ranked
- Landscapers in Manassas307 ranked
- Handymen in Manassas217 ranked
- Kitchen remodelers in Manassas829 ranked
- Bathroom remodelers in Manassas813 ranked
- Flooring contractors in Manassas513 ranked
- Tile installers in Manassas95 ranked
- Drywall contractors in Manassas15 ranked
- Concrete contractors in Manassas220 ranked
- Fence contractors in Manassas123 ranked
- Deck builders in Manassas332 ranked
- Siding contractors in Manassas470 ranked
- Window installers in Manassas501 ranked
- Gutter installers in Manassas289 ranked
- Insulation contractors in Manassas86 ranked
- Solar installers in Manassas136 ranked
- Garage door repair companies in Manassas111 ranked
- Foundation repair companies in Manassas158 ranked
- Tree services in Manassas270 ranked
- Masonry contractors in Manassas207 ranked
- Water damage restoration companies in Manassas641 ranked
- Home builders in Manassas648 ranked
- Demolition contractors in Manassas47 ranked
- Window cleaners in Manassas77 ranked
- Pressure washing companies in Manassas182 ranked
- Pest control companies in Manassas138 ranked
- Paving contractors in Manassas98 ranked
- Auto glass repair shops in Manassas153 ranked
- Excavating contractors in Manassas65 ranked
- Pool builders in Manassas202 ranked
- All contractors in Manassas