63 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Maryland Heights: Pierson Plumbing Sewer & Drain L.L.C, CR Score 58/100; 4.8★ from 169 Google reviews; open 24/7.
Best for emergencies (open 24/7): Mr. Rooter Plumbing of St. Louis, posts 24/7 hours; ranked #2 of 63.
Most-reviewed: Superior Service, 2,219 Google reviews at 5.0★, the most of 63 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
63 Maryland Heights septic service companies are ranked here by CR Score, from ten published factors. 14 are open 24/7, 32 open Saturdays and 24 open Sundays, based on posted hours. The median Google rating is 4.7★ across 63 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Pierson Plumbing Sewer & Drain L.L.C | 58 | 4.8★ (169) | Saint Charles, 5 mi away | 24/7 | Overall |
| 2 | Mr. Rooter Plumbing of St. Louis | 58 | 4.8★ (2,141) | Ballwin, 12 mi away | 24/7 | Emergencies |
| 3 | Superior Service | 57 | 4.9★ (1,766) | Chesterfield, 11 mi away | Sat · Sun · Evenings | — |
| 4 | St Louis Sewer & Drain Cleaning Services LLC | 56 | 4.9★ (321) | Godfrey, 6 mi away | Sat | — |
| 5 | River City Sewer& Drain, L.L.C. | 56 | 4.9★ (207) | Arnold, 18 mi away | 24/7 | — |
| 6 | Superior Service | 56 | 5.0★ (2,219) | Dardenne Prairie, 20 mi away | Sat · Sun · Evenings | Most reviews |
| 7 | Mr. Rooter Plumbing of St. Charles | 56 | 4.8★ (356) | Saint Peters, 11 mi away | 24/7 | — |
| 8 | AA Quick Plumbing And Sewer | 56 | 4.0★ (177) | Saint Ann, 1 mi away | 24/7 | — |
| 9 | Maplewood Plumbing & Sewer, LLC. | 56 | 4.8★ (1,691) | St. Louis, 10 mi away | — | — |
| 10 | Warrior Sewer and Drain | 55 | 4.8★ (459) | Chesterfield, 12 mi away | Sat · Evenings | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 in Maryland Heights
Based in Saint Charles, 5 mi away
Ranked #1 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 Ballwin, 12 mi away
Ranked #2 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, 11 mi away
Ranked #3 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 Godfrey, 6 mi away
Ranked #4 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.
Based in Arnold, 18 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 207 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dardenne Prairie, 20 mi away
Ranked #6 because of its Google rating and review volume: 5.0★ from 2,219 Google reviews, the most in Maryland Heights.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Peters, 11 mi away
Ranked #7 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 Saint Ann, 1 mi away
Ranked #8 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, 10 mi away
Ranked #9 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 Chesterfield, 12 mi away
Ranked #10 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 St. Louis, 4 mi away
Ranked #11 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 Pacific, 23 mi away
Ranked #12 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 Chesterfield, 12 mi away
Ranked #13 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 Belleville, 24 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 212 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Creve Coeur, 3 mi away
Ranked #15 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 St. Louis, 6 mi away
Ranked #16 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 Sappington, 12 mi away
Ranked #17 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 Bridgeton, 4 mi away
Ranked #18 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 St. Louis, 10 mi away
Ranked #19 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.
Based in St. Louis, 15 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ 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 Saint Peters, 10 mi away
Ranked #21 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 Kirkwood, 9 mi away
Ranked #22 because of its Google rating and trade focus: 3.7★ 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 Spanish Lake, 4 mi away
Ranked #23 because of its Google rating and review volume: 4.9★ from 76 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in O'Fallon, 22 mi away
Ranked #24 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 St. Louis, 14 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 183 Google reviews, listed on Google as “Plumber”.
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 63 ranked septic service companies here; the rest are on their profiles.
18 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) | 16 mi |
| Biologix Products Group | 5.0★ (1) | 3 mi |
| Burke Plumbing | 9 mi | |
| C C Drain & Sewer Cleaning Co | 12 mi | |
| Dc septic & drain | 24 mi | |
| Drain Cleaning St Louis | 5.0★ (1) | 11 mi |
| E Plumbing and Sewer | 5.0★ (2) | 11 mi |
| Eco Septic Tank Pumping St Louis | 6 mi | |
| H & H Sewer & Pipe Cleaning | 5.0★ (1) | 22 mi |
| Kelmer Plumbing & Sewer | 5.0★ (2) | 24 mi |
| Landis Environmental Sewer Services | 5.0★ (1) | 8 mi |
| Mario's Sewer & Drain Cleaning, LLC | 5 mi | |
| Mega Rooter sewer and Drain LLC | 6 mi | |
| Miller Septic | 5.0★ (1) | 24 mi |
| O'Fallon Sewer & Plumbing Repair Service | 23 mi | |
| Ross Excavating | 25 mi | |
| Royale Sewer and drains | 11 mi | |
| SweenCo Sewer Rehabilitation | 5.0★ (2) | 9 mi |
We scored 63 Maryland Heights 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 Maryland Heights 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 |