59/100CR Score
Ranked #1 because of its Google rating and review volume: 5.0★ from 2,219 Google reviews, the most in Saint Peters.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Saint Peters, MO (2026)
47 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Saint Peters: Superior Service, CR Score 59/100; 5.0★ from 2,219 Google reviews; open 7 days a week.
- 2
Best for emergencies (open 24/7): Mr. Rooter Plumbing of St. Charles, posts 24/7 hours; ranked #2 of 47.
- 6
Most-reviewed: Mr. Rooter Plumbing of St. Louis, 2,141 Google reviews at 4.8★, the most of 47 ranked after Superior Service; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
47 Saint Peters septic service companies are ranked here by CR Score, from ten published factors. 14 are open 24/7, 30 open Saturdays and 22 open Sundays, based on posted hours. The median Google rating is 4.7★ across 47 rated businesses.
Top 10 septic service companies in Saint Peters at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Superior Service | 59 | 5.0★ (2,219) | Dardenne Prairie, 10 mi away | Sat · Sun · Evenings | Overall |
| 2 | Mr. Rooter Plumbing of St. Charles | 58 | 4.8★ (356) | Saint Peters | 24/7 | Emergencies |
| 3 | Mission Septic And Drain | 58 | 5.0★ (112) | O'Fallon, 23 mi away | 24/7 | — |
| 4 | Pierson Plumbing Sewer & Drain L.L.C | 58 | 4.8★ (169) | Saint Charles, 8 mi away | 24/7 | — |
| 5 | Superior Service | 58 | 4.9★ (1,766) | Chesterfield, 9 mi away | Sat · Sun · Evenings | — |
| 6 | Mr. Rooter Plumbing of St. Louis | 56 | 4.8★ (2,141) | Ballwin, 21 mi away | 24/7 | Most reviews |
| 7 | Warrior Sewer and Drain | 56 | 4.8★ (459) | Chesterfield, 9 mi away | Sat · Evenings | — |
| 8 | Premier Water & Sewer Service | 55 | 4.8★ (81) | Saint Peters | Sat | — |
| 9 | St Louis Sewer & Drain Cleaning Services LLC | 55 | 4.9★ (321) | Godfrey, 10 mi away | Sat | — |
| 10 | The Sewer Pros | 55 | 4.9★ (594) | Chesterfield, 9 mi away | — | — |
The 47 best septic service companies in Saint Peters, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Saint Peters
58/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 356 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in O'Fallon, 23 mi away
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 112 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Charles, 8 mi away
58/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 169 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chesterfield, 9 mi away
58/100CR ScoreRanked #5 because of its Google rating and review volume: 4.9★ from 1,766 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ballwin, 21 mi away
56/100CR ScoreRanked #6 because of its Google rating and review volume: 4.8★ from 2,141 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chesterfield, 9 mi away
56/100CR ScoreRanked #7 because of its Google rating and review volume: 4.8★ from 459 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Peters
55/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.8★ from 81 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Godfrey, 10 mi away
55/100CR ScoreRanked #9 because of its Google rating and review volume: 4.9★ from 321 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#10 The Sewer Pros
Based in Chesterfield, 9 mi away
55/100CR ScoreRanked #10 because of its Google rating and review volume: 4.9★ from 594 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Pacific, 24 mi away
54/100CR ScoreRanked #11 because of its Google rating and review volume: 4.8★ from 304 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in O'Fallon, 11 mi away
54/100CR ScoreRanked #12 because of its Google rating and trade focus: 3.1★ 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 Troy, 21 mi away
54/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Ann, 13 mi away
53/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.0★ from 177 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Louis, 22 mi away
53/100CR ScoreRanked #15 because of its Google rating and review volume: 4.8★ from 1,691 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in O'Fallon, 15 mi away
52/100CR ScoreRanked #16 because of its Google rating and trade focus: 3.7★ 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 Saint Peters
52/100CR ScoreRanked #17 because of its Google rating and review volume: 4.8★ from 59 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Louis, 15 mi away
52/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.3★ from 29 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Creve Coeur, 11 mi away
52/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bridgeton, 11 mi away
51/100CR ScoreRanked #20 because of its Google rating and trade focus: 3.7★ 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 Pacific, 24 mi away
51/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Sappington, 23 mi away
50/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.7★ from 23 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Louis, 18 mi away
50/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.7★ from 28 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Louis, 22 mi away
50/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.6★ from 14 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#25 B & J Septic
Based in Troy, 23 mi away
50/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.2★ from 18 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
All 47 septic service companies
#1 to #25 are shown in full above. Here are #26 to #47, in CR Score order; each links to its profile.
Also serving Saint Peters
16 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 |
|---|---|---|
| 3rd Generation Sewer Services | 3.0★ (2) | 25 mi |
| Biologix Products Group | 5.0★ (1) | 15 mi |
| Burke Plumbing | 19 mi | |
| C C Drain & Sewer Cleaning Co | 21 mi | |
| City & County Plumbing and Drain | 5.0★ (14) | In Saint Peters |
| Dc septic & drain | 13 mi | |
| Drain Cleaning St Louis | 5.0★ (1) | 22 mi |
| E Plumbing and Sewer | 5.0★ (2) | 23 mi |
| Eco Septic Tank Pumping St Louis | 14 mi | |
| Landis Environmental Sewer Services | 5.0★ (1) | 18 mi |
| Mario's Sewer & Drain Cleaning, LLC | 16 mi | |
| Mega Rooter sewer and Drain LLC | In Saint Peters | |
| O'Fallon Sewer & Plumbing Repair Service | In Saint Peters | |
| Royale Sewer and drains | 23 mi | |
| SweenCo Sewer Rehabilitation | 5.0★ (2) | 7 mi |
| The Home Depot | 4.3★ (1,142) | In Saint Peters |
How we ranked Saint Peters septic service companies
We scored 47 Saint Peters 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 Saint Peters 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 Saint Peters: frequently asked questions
Who is the best septic service company in Saint Peters?
By CR Score, the highest-ranked septic service company in Saint Peters, MO is Superior Service with a CR Score of 59/100. It has 5.0★ from 2,219 Google reviews. It is open 7 days a week. Mr. Rooter Plumbing of St. Charles (#2) and Mission Septic And Drain (#3) follow. We ranked 47 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Saint Peters?
ContractorsRanked ranks 47 septic service companies serving Saint Peters, MO. 3 of them are based in Saint Peters; the rest serve it from nearby towns. Another 16 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Saint Peters are open 24/7?
14 ranked septic service companies in Saint Peters post 24/7 hours. The highest-ranked are Mr. Rooter Plumbing of St. Charles (#2), Mission Septic And Drain (#3) and Pierson Plumbing Sewer & Drain L.L.C (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Saint Peters work on weekends?
30 of 47 ranked septic service companies post Saturday hours and 22 post Sunday hours. The highest-ranked open Saturdays are Superior Service (#1), Mr. Rooter Plumbing of St. Charles (#2) and Mission Septic And Drain (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Saint Peters septic service companies have?
The median Google rating among 47 rated septic service companies in Saint Peters is 4.7★, with a median of 28 reviews. Superior Service has the most, 2,219 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 Saint Peters count in this ranking?
Yes, if they are within 25 mi of the Saint Peters 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 Saint Peters
- November 2026: CR Scores recalculated for 47 septic service companies serving Saint Peters.
- November 2026: 1 duplicate listing merged.
More septic service companies and Saint Peters pages
Septic service companies near Saint Peters
- Septic service companies in O'Fallon, MO38 ranked
- Septic service companies in Dardenne Prairie, MO40 ranked
- Septic service companies in Saint Charles, MO59 ranked
- Septic service companies in Lake Saint Louis, MO31 ranked
- Septic service companies in Chesterfield, MO63 ranked
- Septic service companies in Bridgeton, MO67 ranked
- Septic service companies in Maryland Heights, MO63 ranked
- Septic service companies in Wentzville, MO24 ranked
- Septic service companies in Hazelwood, MO69 ranked
- Septic service companies in Saint Ann, MO67 ranked
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