203 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Greenlawn: Affordable Cesspool Sewer & Drain | Septic & Grease Trap Service - Long Island, CR Score 64/100; 4.9★ from 699 Google reviews; open 24/7.
Best for emergencies (open 24/7): Discount Cesspool & Drain Inc., posts 24/7 hours; ranked #2 of 203.
Most-reviewed: Mr. Rooter Plumbing of Long Island, 1,488 Google reviews at 4.7★, the most of 203 ranked; ranked #20.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
203 Greenlawn septic service companies are ranked here by CR Score, from ten published factors. 121 are open 24/7, 158 open Saturdays and 144 open Sundays, based on posted hours. The median Google rating is 4.9★ across 203 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Affordable Cesspool Sewer & Drain | Septic & Grease Trap Service - Long Island | 64 | 4.9★ (699) | Brentwood, 11 mi away | 24/7 | Overall |
| 2 | Discount Cesspool & Drain Inc. | 64 | 4.9★ (481) | Brentwood, 11 mi away | 24/7 | Emergencies |
| 3 | White Wolf Cesspool Services | 63 | 4.9★ (729) | Commack, 6 mi away | — | — |
| 4 | Four Seasons Cesspool | 63 | 5.0★ (276) | Nesconset, 11 mi away | 24/7 | — |
| 5 | Reputable Cesspool & Drain | 62 | 5.0★ (147) | Smithtown, 11 mi away | 24/7 | — |
| 6 | Rapid Response Cesspool, Sewer & Drain | 61 | 4.9★ (108) | Bay Shore, 9 mi away | 24/7 | — |
| 7 | Cesspool Pros & Sewer and Drain Pros of Suffolk & Nassau County | 60 | 4.6★ (155) | Deer Park, 9 mi away | 24/7 | — |
| 8 | AAA Dependable Cesspool, Sewer & Drain Service Inc. | 60 | 4.9★ (92) | Ronkonkoma, 12 mi away | 24/7 | — |
| 9 | 24/7 CESSPOOL SEPTIC SERVICE SUFFOLK COUNTY - Drastic Drainage Long Island | 60 | 4.8★ (132) | West Babylon, 14 mi away | 24/7 | — |
| 10 | 89.95 Sewer and Drainage | 60 | 5.0★ (18) | Huntington Station, 2 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 in Greenlawn
Based in Brentwood, 11 mi away
Ranked #1 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.
Based in Brentwood, 11 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 481 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Commack, 6 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 729 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Nesconset, 11 mi away
Ranked #4 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.
Based in Smithtown, 11 mi away
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.
Based in Bay Shore, 9 mi away
Ranked #6 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.
Based in Deer Park, 9 mi away
Ranked #7 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.
Based in Ronkonkoma, 12 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 92 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Babylon, 14 mi away
Ranked #9 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.
Based in Huntington Station, 2 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Garden City, 16 mi away
Ranked #11 because of its Google rating and review volume: 4.8★ from 1,423 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Holbrook, 17 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 121 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medford, 20 mi away
Ranked #13 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.
Based in Stony Brook, 24 mi away
Ranked #14 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.
Based in New York City, 16 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 70 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Holbrook, 16 mi away
Ranked #16 because of its Google rating and trade focus: 4.6★ from 160 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Huntington, 3 mi away
Ranked #17 because of its Google rating and review volume: 4.8★ from 706 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ronkonkoma, 14 mi away
Ranked #18 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.
Based in Coram, 24 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 186 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bayport, 9 mi away
Ranked #20 because of its Google rating and review volume: 4.7★ from 1,488 Google reviews, the most in Greenlawn.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Holtsville, 17 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 172 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brentwood, 7 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wantagh, 15 mi away
Ranked #23 because of its Google rating and review volume: 4.8★ from 1,390 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Glen Cove, 12 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 22 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brentwood, 6 mi away
Ranked #25 because of its Google rating and trade focus: 4.4★ from 53 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#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 203 ranked septic service companies here; the rest are on their profiles.
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 |
|---|---|---|
| ABC Sewer Services Inc | 5.0★ (2) | 9 mi |
| Artco Construction INC | 5.0★ (2) | 9 mi |
| Atomic Rooter Plumbing Sewer and Drain Cleaning | 5.0★ (2) | 14 mi |
| AZ Sewers & Drain Services | 5.0★ (2) | 22 mi |
| Busch Bros Cesspool Sewer & Drain, Corp | 5.0★ (2) | 11 mi |
| Elmont Sewer Drain Cleaning | 5.0★ (2) | 22 mi |
| Highland Sewer & Drain Services | 3.0★ (2) | 15 mi |
| Island Cesspool Pumping | 5.0★ (2) | 22 mi |
| John's Sewer Cleaning | 5.0★ (2) | 21 mi |
| Long Island Drain & Sewer Service | 5.0★ (2) | 11 mi |
| Long Island Water and Sewer Main | 5.0★ (2) | 17 mi |
| Mangano Sewer N | 4.5★ (2) | 8 mi |
| MLK Sewer & Drain | 2.5★ (2) | 18 mi |
| Nassau County Plumbing and Sewer Rooter | 5.0★ (2) | 23 mi |
| North Star Sewer Services | 5.0★ (2) | 23 mi |
| Nudo Cesspool Co | 5.0★ (2) | 22 mi |
| Premium Sewer & Drain | 3.0★ (2) | 14 mi |
| Sam's Septic Cleaning | 3.0★ (2) | 17 mi |
| Suffolk County Septic Tank Pumping & Services | Septic Repair Suffolk NY | 3.0★ (2) | 22 mi |
| United Site Services | 3.0★ (2) | 12 mi |
We scored 203 Greenlawn 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 Greenlawn 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 |