37 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Port Colborne: Sewer-Man Drain Service St. Catharines, CR Score 63/100; 4.8★ from 114 Google reviews; open 24/7.
Best for emergencies (open 24/7): MaxPlumb Drain & Plumbing Services Port Colborne, posts 24/7 hours; ranked #3 of 37.
Most-reviewed: Advanced Sewer & Drain Cleaning, 117 Google reviews at 4.7★, the most of 37 ranked; ranked #12.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
37 Port Colborne septic service companies are ranked here by CR Score, from ten published factors. 12 are open 24/7, 17 open Saturdays and 13 open Sundays, based on posted hours. The median Google rating is 4.9★ across 37 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Sewer-Man Drain Service St. Catharines | 63 | 4.8★ (114) | St. Catharines, 29 km away | 24/7 | Overall |
| 2 | Vic's Septic Service | 59 | 4.6★ (10) | Port Colborne | Sat · Sun | — |
| 3 | MaxPlumb Drain & Plumbing Services Port Colborne | 59 | 5.0★ (4) | Port Colborne | 24/7 | Emergencies |
| 4 | Black Water Excavating & Septic Service Inc. | 59 | 4.5★ (61) | Norfolk County, 21 km away | — | — |
| 5 | Scott Best Sewer Services | 59 | 4.9★ (72) | Welland, 9 km away | — | — |
| 6 | Port colborne Plumbing and Sewer | 58 | 5.0★ (12) | Port Colborne | 24/7 | — |
| 7 | Brown's Septic Service | 57 | 4.8★ (16) | Niagara Falls, 19 km away | — | — |
| 8 | Cosby's Septic Service Ltd | 56 | 4.5★ (25) | St. Catharines, 9 km away | — | — |
| 9 | Niagara Septic Pumping | 56 | 5.0★ (20) | St. Catharines, 15 km away | — | — |
| 10 | FlowRight Plumbing & Drain Services Thorold | 56 | 5.0★ (4) | Thorold, 24 km away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 in Port Colborne
Based in St. Catharines, 29 km away
Ranked #1 because of its Google rating and trade focus: 4.8★ from 114 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Colborne
Ranked #2 because of its Google rating and trade focus: 4.6★ from 10 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Colborne
Ranked #3 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Norfolk County, 21 km away
Ranked #4 because of its Google rating and trade focus: 4.5★ from 61 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Welland, 9 km away
Ranked #5 because of its Google rating and review volume: 4.9★ from 72 Google reviews.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Port Colborne
Ranked #6 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Niagara Falls, 19 km away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in St. Catharines, 9 km away
Ranked #8 because of its Google rating and trade focus: 4.5★ from 25 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Catharines, 15 km away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Thorold, 24 km away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Norfolk County, 33 km away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 57 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Tonawanda, 29 km away
Ranked #12 because of its Google rating and review volume: 4.7★ from 117 Google reviews, the most in Port Colborne.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Niagara Falls, 19 km away
Ranked #13 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Welland, 12 km away
Ranked #14 because of its Google rating and review volume: 5.0★ from 17 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Catharines, 29 km away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fort Erie, 39 km away
Ranked #16 because of its Google rating and review volume: 4.8★ from 34 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Catharines, 26 km away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Catharines, 37 km away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Catharines, 25 km away
Ranked #19 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Catharines, 26 km away
Ranked #20 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Niagara Falls, 21 km away
Ranked #21 because of its Google rating and review volume: 4.8★ from 48 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Catharines, 29 km away
Ranked #22 because of its Google rating and review volume: 5.0★ from 19 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Catharines, 17 km away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Catharines, 33 km away
Ranked #24 because of its Google rating and trade focus: 3.7★ from 15 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Niagara Falls, 25 km away
Ranked #25 because of its Google rating and review volume: 5.0★ from 15 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #37, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Wesko Septic Services | 52 | 5.0★ (8) | 24 km |
| 27 | Granite Plumbing, HVAC & Septic | 52 | 5.0★ (11) | 38 km |
| 28 | Hero Plumbing Pelham | 51 | 5.0★ (6) | 17 km |
| 29 | NexFlow Plumbing Welland | 51 | 5.0★ (4) | 12 km |
| 30 | John Stadelmier Septic Service, Inc. | 50 | 5.0★ (4) | 31 km |
| 31 | CDM Excavating and Contracting INC. | 49 | 4.9★ (30) | 40 km |
| 32 | Back Country Group | 48 | 4.8★ (49) | 38 km |
| 33 | Louigi's Sewer & Drain Cleaning | 48 | 5.0★ (7) | 35 km |
| 34 | Palladino Excavating & Concrete | 47 | 4.7★ (27) | 32 km |
| 35 | Innerunion | 47 | 4.6★ (22) | 26 km |
| 36 | Aquajet Sewer Service Corp | 46 | 3.7★ (3) | 33 km |
| 37 | Jason Kelly Plumbing | 45 | 5.0★ (12) | 35 km |
18 more septic service companies within 40 km that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Cecchini Plumbing | 5.0★ (1) | 35 km |
| First Choice Septic Services | 10 km | |
| Garofalo Sewer Cleaning | 25 km | |
| J C Plumbing & Sewer Cleaning | 33 km | |
| John Stadelmier Septic Service | 34 km | |
| Johnston Pumping Service | 3.0★ (2) | 29 km |
| JVS Services | 21 km | |
| Niagara Drain Master | Plumber | Plumbing | 24 hour | 25 km | |
| Niagara Falls Plumbing and Sewer | 20 km | |
| North Star Land Service | 5.0★ (1) | 28 km |
| Quality Plumbing & Sewer Cleaning | 30 km | |
| Quality Plumbing Sewer Cleaning | 17 km | |
| RL Xcavators | 18 km | |
| Stadelmier John Septic Service | 34 km | |
| T R Symonds Signature | In Port Colborne | |
| UDC Site Development Excavating, Demolition, Paving, Utilities and Septic Systems | 34 km | |
| Ventry's Speedy Sewer Cleaning | 28 km | |
| Zwierschke Brothers Limited | 21 km |
We scored 37 Port Colborne 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 Port Colborne 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 |