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Best Septic Service Companies in Clarksburg, MD (2026)

35 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Clarksburg: King & Sons Septic Service, LLC, CR Score 62/100; 5.0★ from 887 Google reviews.

  2. 2

    Best for emergencies (open 24/7): Jet Septic and Plumbing Services, posts 24/7 hours; ranked #2 of 35.

  3. 22

    Most-reviewed: Shipley Plumbing Heating Cooling, 464 Google reviews at 4.8★, the most of 35 ranked after King & Sons Septic Service, LLC; ranked #22.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

35 Clarksburg septic service companies are ranked here by CR Score, from ten published factors. 14 are open 24/7, 20 open Saturdays and 15 open Sundays, based on posted hours. The median Google rating is 4.8★ across 35 rated businesses.

Most of this list also appears on the Septic service companies in Germantown ranking. See Septic service companies in Germantown

Top 10 septic service companies in Clarksburg at a glance

Top 10 septic service companies in Clarksburg at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1King & Sons Septic Service, LLC625.0★ (887)Gaithersburg, 6 mi away—Overall
2Jet Septic and Plumbing Services615.0★ (321)Westminster, 21 mi away24/7Emergencies
3Loudoun Environmental Treatment574.6★ (147)Purcellville, 24 mi away24/7—
4Your 1 Plumber574.6★ (314)Germantown, 5 mi away24/7—
5Environmental Septic574.9★ (98)Damascus, 8 mi away——
6Five Star Septic Inc.564.2★ (136)Sterling, 20 mi away24/7—
7Fogle's Septic564.0★ (184)Eldersburg, 19 mi away24/7—
8Leigh & Sons Liquid Waste Removal565.0★ (4)North Potomac, 9 mi away24/7—
9Countywide Septic Service554.6★ (20)Walkersville, 19 mi away24/7—
10Fyock Septic Services554.2★ (16)Columbia, 16 mi away24/7—

The 35 best septic service companies in Clarksburg, ranked

Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.

  1. Ranked #1 in Clarksburg

    #1 King & Sons Septic Service, LLC

    Based in Gaithersburg, 6 mi away

    62/100CR Score

    Ranked #1 because of its Google rating and review volume: 5.0★ from 887 Google reviews, the most in Clarksburg.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 887 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    8605 Augusta Farm Ln, Gaithersburg, MD 20882
    View profile for King & Sons Septic Service, LLC(301) 924-4218

  4. #4 Your 1 Plumber

    Based in Germantown, 5 mi away

    57/100CR Score

    Ranked #4 because of its Google rating and review volume: 4.6★ from 314 Google reviews.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.6★ from 314 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    13504 Jamieson Pl, Germantown, MD 20874
    View profile for Your 1 Plumber(301) 671-0447

  5. #5 Environmental Septic

    Based in Damascus, 8 mi away

    57/100CR Score

    Ranked #5 because of its Google rating and trade focus: 4.9★ from 98 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.9★ from 98 Google reviews
    Hours
    Mon–Fri 8:30 AM–4:30 PM · Sat–Sun closed
    View profile for Environmental Septic(301) 253-1400

  6. #6 Five Star Septic Inc.

    Based in Sterling, 20 mi away

    56/100CR Score

    Ranked #6 because of its Google rating and trade focus: 4.2★ from 136 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.2★ from 136 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    45910 Transamerica Plaza, Sterling, VA 20166
    View profile for Five Star Septic Inc.(703) 716-0707

  7. #7 Fogle's Septic

    Based in Eldersburg, 19 mi away

    56/100CR Score

    Ranked #7 because of its Google rating and trade focus: 4.0★ from 184 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.0★ from 184 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    580 Obrecht Rd Ste B, Sykesville, MD 21784
    View profile for Fogle's Septic(410) 795-5670

  9. #9 Countywide Septic Service

    Based in Walkersville, 19 mi away

    55/100CR Score

    Ranked #9 because of its Google rating and trade focus: 4.6★ from 20 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.6★ from 20 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    8478 Devon Ln, Walkersville, MD 21793
    View profile for Countywide Septic Service(240) 415-9800

  10. #10 Fyock Septic Services

    Based in Columbia, 16 mi away

    55/100CR Score

    Ranked #10 because of its Google rating and trade focus: 4.2★ from 16 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.2★ from 16 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    13655 Triadelphia Rd, Glenelg, MD 21737
    View profile for Fyock Septic Services(410) 531-2939

  13. #13 Murphys Septic and Excavating

    Based in Frederick, 8 mi away

    54/100CR Score

    Ranked #13 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 16 Google reviews
    Hours
    Mon–Fri 7 AM–8 PM · Sat–Sun closed
    Address
    10701 Fingerboard Rd # A, Ijamsville, MD 21754
    View profile for Murphys Septic and Excavating(301) 865-3062

  15. #15 Frederick Septic

    Based in Frederick, 21 mi away

    53/100CR Score

    Ranked #15 because of its Google rating and trade focus: 4.4★ from 45 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.4★ from 45 Google reviews
    Hours
    Mon–Sat 7 AM–5 PM · Sun closed
    Address
    9623 Hamburg Rd, Frederick, MD 21702
    View profile for Frederick Septic(301) 698-1033

  16. #16 John Seek Septic Tank Pumping

    Based in Germantown, 8 mi away

    52/100CR Score

    Ranked #16 because of its Google rating and trade focus: 4.4★ from 13 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.4★ from 13 Google reviews
    Hours
    Mon–Fri 7 AM–5 PM · Sat–Sun closed
    Address
    21616 1st St, Laytonsville, MD 20882
    View profile for John Seek Septic Tank Pumping(301) 977-0789

  17. #17 Jenkins Brothers Septic Tank

    Based in Eldersburg, 20 mi away

    52/100CR Score

    Ranked #17 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 3.7★ from 3 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    7670 Smiths Private Rd, Sykesville, MD 21784
    View profile for Jenkins Brothers Septic Tank(410) 465-6646

  18. #18 Rooter-Man

    Based in Silver Spring, 15 mi away

    52/100CR Score

    Ranked #18 because of its Google rating and review volume: 5.0★ from 63 Google reviews.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 63 Google reviews
    Hours
    Mon–Sun 12 AM–11:30 PM
    Address
    Twin Valley Ln, Silver Spring, MD 20906
    View profile for Rooter-Man(301) 924-3033

  19. #19 Freedom Septic Service

    Based in Baltimore, 23 mi away

    52/100CR Score

    Ranked #19 because of its Google rating and trade focus: 4.6★ from 93 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.6★ from 93 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    2809 Liberty Rd, Sykesville, MD 21784
    View profile for Freedom Septic Service(410) 795-2947

  21. #21 Colson's Septic Services

    Based in Eldersburg, 15 mi away

    51/100CR Score

    Ranked #21 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 13 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    View profile for Colson's Septic Services(443) 536-9382

  23. #23 Stoney's Plumbing

    Based in Leesburg, 18 mi away

    51/100CR Score

    Ranked #23 because of its Google rating and review volume: 5.0★ from 290 Google reviews.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 290 Google reviews
    Hours
    Mon–Fri 7 AM–5 PM · Sat–Sun closed
    Address
    574 Rockbridge Dr SE, Leesburg, VA 20175
    View profile for Stoney's Plumbing(703) 794-5592

How we ranked Clarksburg septic service companies

We scored 35 Clarksburg 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Clarksburg data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

Septic service companies in Clarksburg: frequently asked questions

Who is the best septic service company in Clarksburg?

By CR Score, the highest-ranked septic service company in Clarksburg, MD is King & Sons Septic Service, LLC with a CR Score of 62/100. It has 5.0★ from 887 Google reviews. Jet Septic and Plumbing Services (#2) and Loudoun Environmental Treatment (#3) follow. We ranked 35 septic service companies on ten factors, last updated November 3, 2026.

How many septic service companies are there in Clarksburg?

ContractorsRanked ranks 35 septic service companies serving Clarksburg, MD. Counts are as of November 2026.

Which septic service companies in Clarksburg are open 24/7?

14 ranked septic service companies in Clarksburg post 24/7 hours. The highest-ranked are Jet Septic and Plumbing Services (#2), Loudoun Environmental Treatment (#3) and Your 1 Plumber (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.

Which septic service companies in Clarksburg work on weekends?

20 of 35 ranked septic service companies post Saturday hours and 15 post Sunday hours. The highest-ranked open Saturdays are Jet Septic and Plumbing Services (#2), Loudoun Environmental Treatment (#3) and Your 1 Plumber (#4). Posted hours are office hours; crews may book weekend jobs separately.

What Google rating do Clarksburg septic service companies have?

The median Google rating among 35 rated septic service companies in Clarksburg is 4.8★, with a median of 24 reviews. King & Sons Septic Service, LLC has the most, 887 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 Clarksburg count in this ranking?

Yes, if they are within 25 mi of the Clarksburg 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 Clarksburg

  1. November 2026: CR Scores recalculated for 35 septic service companies serving Clarksburg.
  2. November 2026: 1 duplicate listing merged.

More septic service companies and Clarksburg pages

Other trades in Clarksburg