64/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 44 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Kingston, ON (2026)
19 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Kingston: Gribb Septic Inc., CR Score 64/100; 4.8★ from 44 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Universal Plumbing & Sewer Services Inc., posts 24/7 hours; ranked #2 of 19.
- 2
Most-reviewed: Universal Plumbing & Sewer Services Inc., 161 Google reviews at 4.8★, the most of 19 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
19 Kingston septic service companies are ranked here by CR Score, from ten published factors. 6 are open 24/7, 8 open Saturdays and 8 open Sundays, based on posted hours. The median Google rating is 4.7★ across 19 rated businesses.
Top 10 septic service companies in Kingston at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Gribb Septic Inc. | 64 | 4.8★ (44) | Kingston | 24/7 | Overall |
| 2 | Universal Plumbing & Sewer Services Inc. | 64 | 4.8★ (161) | Kingston | 24/7 | Emergencies, Most reviews |
| 3 | The Super Plumber - Kingston | 59 | 4.9★ (69) | Kingston | 24/7 | — |
| 4 | Frontenac Septic Service | 59 | 4.5★ (13) | Kingston | Sat · Sun | — |
| 5 | Boulton Septic Services | 59 | 4.7★ (41) | Kingston | — | — |
| 6 | Zomer Corporation | 55 | 4.1★ (14) | Kingston | — | — |
| 7 | Ken's Vacuum Pumping Ltd | 55 | 4.4★ (12) | Kingston | — | — |
| 8 | Smith's Septic Tank Svc Ltd | 55 | 3.4★ (5) | Kingston | — | — |
| 9 | Gribb Septic | 55 | 4.0★ (4) | Kingston | — | — |
| 10 | M Riddle Excavating Ltd | 53 | 5.0★ (39) | Kingston | — | — |
The 19 best septic service companies in Kingston, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Kingston
64/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 161 Google reviews, the most in Kingston.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kingston
59/100CR ScoreRanked #3 because of its Google rating and review volume: 4.9★ from 69 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kingston
59/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.5★ from 13 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kingston
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.7★ from 41 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kingston
55/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.1★ 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 Kingston
55/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.4★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kingston
55/100CR ScoreRanked #8 because of its Google rating and trade focus: 3.4★ from 5 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#9 Gribb Septic
Based in Kingston
55/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Kingston
53/100CR ScoreRanked #10 because of its Google rating and review volume: 5.0★ from 39 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kingston
53/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Napanee, 33 km away
53/100CR ScoreRanked #12 because of its Google rating and review volume: 5.0★ from 37 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Napanee, 27 km away
51/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Kingston
50/100CR ScoreRanked #14 because of its Google rating and review volume: 4.4★ from 18 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#15 Kempe Mechanical
Based in Kingston
50/100CR ScoreRanked #15 because of its Google rating and review volume: 5.0★ from 13 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Napanee, 25 km away
50/100CR ScoreRanked #16 because of its Google rating and availability: 4.8★ from 8 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kingston
49/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.3★ from 11 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Napanee, 38 km away
46/100CR ScoreRanked #18 because of its Google rating and availability: 4.2★ from 5 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Napanee, 37 km away
45/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Landscaper”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Also serving Kingston
3 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 |
|---|---|---|
| Hartins services | 17 km | |
| K Mulrooney Trucking Ltd | 4.1★ (89) | In Kingston |
| Rudi Jones Landscaping & Construction Ltd. | In Kingston |
How we ranked Kingston septic service companies
We scored 19 Kingston 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 Kingston 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 Kingston: frequently asked questions
Who is the best septic service company in Kingston?
By CR Score, the highest-ranked septic service company in Kingston, ON is Gribb Septic Inc. with a CR Score of 64/100. It has 4.8★ from 44 Google reviews. It is open 24/7. Universal Plumbing & Sewer Services Inc. (#2) and The Super Plumber - Kingston (#3) follow. We ranked 19 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Kingston?
ContractorsRanked ranks 19 septic service companies serving Kingston, ON. 14 of them are based in Kingston; the rest serve it from nearby towns. Another 3 within 40 km are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Kingston are open 24/7?
6 ranked septic service companies in Kingston post 24/7 hours. The highest-ranked are Gribb Septic Inc. (#1), Universal Plumbing & Sewer Services Inc. (#2) and The Super Plumber - Kingston (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Kingston work on weekends?
8 of 19 ranked septic service companies post Saturday hours and 8 post Sunday hours. The highest-ranked open Saturdays are Gribb Septic Inc. (#1), Universal Plumbing & Sewer Services Inc. (#2) and The Super Plumber - Kingston (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Kingston septic service companies have?
The median Google rating among 19 rated septic service companies in Kingston is 4.7★, with a median of 13 reviews. Universal Plumbing & Sewer Services Inc. has the most, 161 reviews, and ranks #2. 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 Kingston count in this ranking?
Yes, if they are within 40 km of the Kingston city centre, 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 Kingston
- November 2026: CR Scores recalculated for 19 septic service companies serving Kingston.
More septic service companies and Kingston pages
Septic service companies near Kingston
Other trades in Kingston
- Roofers in Kingston57 ranked
- Plumbers in Kingston53 ranked
- Electricians in Kingston59 ranked
- HVAC contractors in Kingston58 ranked
- General contractors in Kingston74 ranked
- Painters in Kingston29 ranked
- Landscapers in Kingston47 ranked
- Handymen in Kingston11 ranked
- Kitchen remodelers in Kingston32 ranked
- Bathroom remodelers in Kingston31 ranked
- Flooring contractors in Kingston25 ranked
- Tile installers in Kingston15 ranked
- Drywall contractors in Kingston8 ranked
- Concrete contractors in Kingston29 ranked
- Fence contractors in Kingston16 ranked
- Deck builders in Kingston21 ranked
- Siding contractors in Kingston26 ranked
- Window installers in Kingston24 ranked
- Gutter installers in Kingston15 ranked
- Insulation contractors in Kingston14 ranked
- Solar installers in Kingston11 ranked
- Garage door repair companies in Kingston5 ranked
- Foundation repair companies in Kingston11 ranked
- Tree services in Kingston30 ranked
- Masonry contractors in Kingston22 ranked
- Water damage restoration companies in Kingston24 ranked
- Home builders in Kingston47 ranked
- Demolition contractors in Kingston8 ranked
- Window cleaners in Kingston23 ranked
- Pressure washing companies in Kingston9 ranked
- Pest control companies in Kingston12 ranked
- Paving contractors in Kingston16 ranked
- Auto glass repair shops in Kingston9 ranked
- Excavating contractors in Kingston36 ranked
- Pool builders in Kingston19 ranked
- All contractors in Kingston