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Best Septic Service Companies in Stony Brook, NY (2026)

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

The short answer

  1. 1

    Best overall in Stony Brook: Certified Cesspool Service Suffolk County | Cesspool Pumping Suffolk NY, CR Score 65/100; 4.8★ from 411 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Affordable Cesspool Sewer & Drain | Septic & Grease Trap Service - Long Island, posts 24/7 hours; ranked #2 of 170.

  3. 22

    Most-reviewed: Mr. Rooter Plumbing of Long Island, 1,488 Google reviews at 4.7★, the most of 170 ranked; ranked #22.

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

170 Stony Brook septic service companies are ranked here by CR Score, from ten published factors. 97 are open 24/7, 131 open Saturdays and 116 open Sundays, based on posted hours. The median Google rating is 4.9★ across 170 rated businesses.

Top 10 septic service companies in Stony Brook at a glance

Top 10 septic service companies in Stony Brook at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Certified Cesspool Service Suffolk County | Cesspool Pumping Suffolk NY654.8★ (411)Stony Brook24/7Overall
2Affordable Cesspool Sewer & Drain | Septic & Grease Trap Service - Long Island654.9★ (699)Brentwood, 9 mi away24/7Emergencies
3Four Seasons Cesspool645.0★ (276)Nesconset, 6 mi away24/7—
4Discount Cesspool & Drain Inc.644.9★ (481)Brentwood, 9 mi away24/7—
5Reputable Cesspool & Drain635.0★ (147)Smithtown, 5 mi away24/7—
6White Wolf Cesspool Services634.9★ (729)Commack, 7 mi away——
7SewerTech Cesspool & Drain625.0★ (134)Medford, 11 mi away24/7—
8Finest Cesspool Sewer & Drain Inc614.9★ (186)Coram, 12 mi away24/7—
9AAA Dependable Cesspool, Sewer & Drain Service Inc.614.9★ (92)Ronkonkoma, 7 mi away24/7—
10Battlin' Barry's Cesspool Sewe614.9★ (121)Holbrook, 11 mi away24/7—

The 170 best septic service companies in Stony Brook, ranked

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

  1. 65/100CR Score

    Ranked #1 because of its Google rating and trade focus: 4.8★ from 411 Google reviews, listed on Google as “Septic system service”.

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

    • 4.8★ from 411 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
  2. 65/100CR Score

    Ranked #2 because of its Google rating and trade focus: 4.9★ from 699 Google reviews, listed on Google as “Septic system service”.

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

    • 4.9★ from 699 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    180 Blydenburgh Rd, Islandia, NY 11749
  3. Based in Nesconset, 6 mi away

    64/100CR Score

    Ranked #3 because of its Google rating and trade focus: 5.0★ from 276 Google reviews, listed on Google as “Septic system service”.

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

    • 5.0★ from 276 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    169 Smithtown Blvd, Nesconset, NY 11767
  4. Based in Smithtown, 5 mi away

    63/100CR Score

    Ranked #5 because of its Google rating and trade focus: 5.0★ from 147 Google reviews, listed on Google as “Septic system service”.

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

    • 5.0★ from 147 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    769 Smithtown Bypass Unit A, Smithtown, NY 11787
  5. Based in Medford, 11 mi away

    62/100CR Score

    Ranked #7 because of its Google rating and trade focus: 5.0★ from 134 Google reviews, listed on Google as “Septic system service”.

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

    • 5.0★ from 134 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    91a Southaven Ave, Medford, NY 11763
  6. 61/100CR Score

    Ranked #11 because of its Google rating and trade focus: 4.8★ from 132 Google reviews, listed on Google as “Septic system service”.

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

    • 4.8★ from 132 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
  7. Based in Centereach, 6 mi away

    60/100CR Score

    Ranked #14 because of its Google rating and trade focus: 4.9★ from 78 Google reviews, listed on Google as “Septic system service”.

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

    • 4.9★ from 78 Google reviews
    Hours
    Mon–Sun 7 AM–9 PM
    Address
    6 Arthur Ave, Centereach, NY 11720
  8. Based in Ronkonkoma, 9 mi away

    60/100CR Score

    Ranked #16 because of its Google rating and trade focus: 4.7★ from 196 Google reviews, listed on Google as “Septic system service”.

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

    • 4.7★ from 196 Google reviews
    Hours
    Mon–Sun 7 AM–10 PM
    Address
    847 11th St, Ronkonkoma, NY 11779
  9. 59/100CR Score

    Ranked #18 because of its Google rating and trade focus: 4.6★ from 155 Google reviews, listed on Google as “Septic system service”.

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

    • 4.6★ from 155 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    55 Brook Ave, Deer Park, NY 11729
  10. Based in Coram, 7 mi away

    59/100CR Score

    Ranked #19 because of its Google rating and trade focus: 4.9★ from 108 Google reviews, listed on Google as “Septic system service”.

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

    • 4.9★ from 108 Google reviews
    Hours
    Mon–Sat 8 AM–7:30 PM · Sun closed
  11. Based in East Patchogue, 14 mi away

    58/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.8★ from 89 Google reviews, listed on Google as “Septic system service”.

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

    • 4.8★ from 89 Google reviews
    Hours
    Mon–Sun 12 AM–11:30 PM
    Address
    363 N Dunton Ave, East Patchogue, NY 11772

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 170 ranked septic service companies here; the rest are on their profiles.

septic service companies in Stony Brook, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Anthony's Any Sewer Any Drain, LLC574.8★ (201)12 mi
27AJS Cesspool Services574.8★ (24)3 mi
2889.95 Sewer and Drainage575.0★ (18)15 mi
29Outback Cesspool Service564.8★ (20)15 mi
30Unlimited Excavation and Construction565.0★ (27)19 mi
31Al Dexter Septic & Drainage564.8★ (48)22 mi
32Deep Impact Cesspool Service Inc564.4★ (53)11 mi
33Connecticut Sewer Rooter & Drain Cleaning564.9★ (171)18 mi
34Bill Mallins Cesspool Service Corp.564.7★ (15)8 mi
35Epic Septic of Fairfield County565.0★ (15)16 mi
36UNIVERSAL SEWER AND DRAIN LLC564.9★ (66)12 mi
37Suffolk Septic Services | Septic Tank Pumping Suffolk NY564.4★ (11)12 mi
38FIX-A-LEAK Plumbing & Heating Inc. | Plumber, Sewer Repair, Water Heater Installation & Heating Services Bohemia, NY564.8★ (706)15 mi
39J Rooter Sewer and Drain Cleaning565.0★ (167)21 mi
40Wilson's Plumbing Heating HVAC & Electric565.0★ (258)15 mi
41Edwards Sewer & Drains Inc564.8★ (76)15 mi
42Great River Cesspool Services554.0★ (4)7 mi
43Coleman Cesspool Service554.7★ (26)14 mi
44Murph’s Drainage Solutions Inc. | Cesspool Service555.0★ (159)12 mi
45Septic System Services Long Island | Septic Tank Pumping Suffolk NY555.0★ (6)12 mi
46ABC Sewer Service555.0★ (30)6 mi
47Rescue Cesspool & Drain554.8★ (136)9 mi
48Suffolk Septic System Installation | Septic Tank Replacement Suffolk County NY555.0★ (5)12 mi
49The Cesspool and Drain Pro555.0★ (3)10 mi
50CMM Cesspool Services | Cesspool Pumping & Drain Cleaning555.0★ (6)14 mi

Also serving Stony Brook

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.

How we ranked Stony Brook septic service companies

We scored 170 Stony Brook 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 Stony Brook 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 Stony Brook: frequently asked questions

Who is the best septic service company in Stony Brook?

By CR Score, the highest-ranked septic service company in Stony Brook, NY is Certified Cesspool Service Suffolk County | Cesspool Pumping Suffolk NY with a CR Score of 65/100. It has 4.8★ from 411 Google reviews. It is open 24/7. Affordable Cesspool Sewer & Drain | Septic & Grease Trap Service - Long Island (#2) and Four Seasons Cesspool (#3) follow. We ranked 170 septic service companies on ten factors, last updated November 3, 2026.

How many septic service companies are there in Stony Brook?

ContractorsRanked ranks 170 septic service companies serving Stony Brook, NY. 1 of them is based in Stony Brook; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.

Which septic service companies in Stony Brook are open 24/7?

97 ranked septic service companies in Stony Brook post 24/7 hours. The highest-ranked are Certified Cesspool Service Suffolk County | Cesspool Pumping Suffolk NY (#1), Affordable Cesspool Sewer & Drain | Septic & Grease Trap Service - Long Island (#2) and Four Seasons Cesspool (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.

Which septic service companies in Stony Brook work on weekends?

131 of 170 ranked septic service companies post Saturday hours and 116 post Sunday hours. The highest-ranked open Saturdays are Certified Cesspool Service Suffolk County | Cesspool Pumping Suffolk NY (#1), Affordable Cesspool Sewer & Drain | Septic & Grease Trap Service - Long Island (#2) and Four Seasons Cesspool (#3). Posted hours are office hours; crews may book weekend jobs separately.

What Google rating do Stony Brook septic service companies have?

The median Google rating among 170 rated septic service companies in Stony Brook is 4.9★, with a median of 20 reviews. Mr. Rooter Plumbing of Long Island has the most, 1,488 reviews, and ranks #22. 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 Stony Brook count in this ranking?

Yes, if they are within 25 mi of the Stony Brook 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 Stony Brook

  1. November 2026: CR Scores recalculated for 170 septic service companies serving Stony Brook.
  2. November 2026: 4 duplicate listings merged.

More septic service companies and Stony Brook pages

Other trades in Stony Brook