62/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 83 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in West Chester, PA (2026)
47 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in West Chester: OnSite Management, Inc., CR Score 62/100; 4.9★ from 83 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Delaware Valley Septic, Sewer & Storm, posts 24/7 hours; ranked #2 of 47.
- 6
Most-reviewed: Mattioni Plumbing, Heating & Cooling, 3,621 Google reviews at 4.8★, the most of 47 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
47 West Chester septic service companies are ranked here by CR Score, from ten published factors. 32 are open 24/7, 38 open Saturdays and 34 open Sundays, based on posted hours. The median Google rating is 5.0★ across 47 rated businesses.
Top 10 septic service companies in West Chester at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | OnSite Management, Inc. | 62 | 4.9★ (83) | West Chester | 24/7 | Overall |
| 2 | Delaware Valley Septic, Sewer & Storm | 61 | 4.9★ (477) | Springfield, 14 mi away | 24/7 | Emergencies |
| 3 | McGovern Septic | 60 | 4.6★ (32) | West Chester | 24/7 | — |
| 4 | Hickman Sanitation Service | 60 | 4.8★ (20) | West Chester | 24/7 | — |
| 5 | Eldredge Septic | 60 | 5.0★ (1,278) | Coatesville, 9 mi away | — | — |
| 6 | Mattioni Plumbing, Heating & Cooling | 60 | 4.8★ (3,621) | Downingtown, 6 mi away | 24/7 | Most reviews |
| 7 | Wind River Environmental of Swedesboro, NJ | 58 | 5.0★ (138) | Pennsville, 22 mi away | 24/7 | — |
| 8 | Mattioni Plumbing, Heating & Cooling | 57 | 5.0★ (477) | Kennett Square, 10 mi away | 24/7 | — |
| 9 | TLC Drain, Sewer, and Water Cleanup | 57 | 4.8★ (800) | King of Prussia, 18 mi away | 24/7 | — |
| 10 | Gray Brothers Septic Services & Portable Restrooms - Montgomery, Chester, Delaware and Philadelphia Counties | 57 | 4.5★ (47) | Phoenixville, 15 mi away | 24/7 | — |
The 47 best septic service companies in West Chester, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Springfield, 14 mi away
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 477 Google reviews, listed on Google as “Septic system service”.
Based in West Chester
60/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.6★ from 32 Google reviews, listed on Google as “Septic system service”.
Based in West Chester
60/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 20 Google reviews, listed on Google as “Septic system service”.
Based in Coatesville, 9 mi away
60/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 1,278 Google reviews, listed on Google as “Septic system service”.
Based in Downingtown, 6 mi away
60/100CR ScoreRanked #6 because of its Google rating and review volume: 4.8★ from 3,621 Google reviews, the most in West Chester.
Based in Pennsville, 22 mi away
58/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 138 Google reviews, listed on Google as “Septic system service”.
Based in Kennett Square, 10 mi away
57/100CR ScoreRanked #8 because of its Google rating and review volume: 5.0★ from 477 Google reviews.
Based in King of Prussia, 18 mi away
57/100CR ScoreRanked #9 because of its Google rating and review volume: 4.8★ from 800 Google reviews.
Based in Phoenixville, 15 mi away
57/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.5★ from 47 Google reviews, listed on Google as “Septic system service”.
Based in Wilmington, 17 mi away
56/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 152 Google reviews, listed on Google as “Septic system service”.
Based in King of Prussia, 14 mi away
56/100CR ScoreRanked #12 because of its Google rating and review volume: 5.0★ from 667 Google reviews.
Based in Phoenixville, 13 mi away
56/100CR ScoreRanked #13 because of its Google rating and review volume: 5.0★ from 493 Google reviews.
Based in Downingtown, 11 mi away
56/100CR ScoreRanked #14 because of its Google rating and review volume: 4.9★ from 312 Google reviews.
Based in Claymont, 14 mi away
55/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.7★ from 178 Google reviews, listed on Google as “Plumber”.
Based in Trooper, 15 mi away
55/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Septic system service”.
Based in Coatesville, 22 mi away
55/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 107 Google reviews, listed on Google as “Septic system service”.
Based in Limerick, 25 mi away
54/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Septic system service”.
Based in Elkton, 15 mi away
54/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “Plumber”.
Based in Norristown, 18 mi away
53/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Plumber”.
Based in Oreland, 25 mi away
53/100CR ScoreRanked #21 because of its Google rating and review volume: 4.9★ from 546 Google reviews.
Based in Pottstown, 21 mi away
53/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.6★ from 19 Google reviews, listed on Google as “Septic system service”.
Based in Phoenixville, 12 mi away
52/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.5★ from 25 Google reviews, listed on Google as “Septic system service”.
Based in King of Prussia, 16 mi away
52/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Plumber”.
Based in Lansdowne, 19 mi away
51/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 147 Google reviews, listed on Google as “Plumber”.
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 West Chester
10 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 |
|---|---|---|
| Abbadusky Environmental Services | 5.0★ (1) | 7 mi |
| Aston-Mauger Contracting, Inc | 21 mi | |
| B Neil Gentry Excavating | In West Chester | |
| Carneys Point Twp Sewerage | 19 mi | |
| Delaware Plumbing Professionals | 17 mi | |
| Long Brothers Construction Services LLC | 23 mi | |
| Parker Wastewater Consulting, Inc. | 5.0★ (1) | 8 mi |
| Robert F. Wiesner Plumbing & Septic | 17 mi | |
| Water Heaters Philadelphia | 25 mi | |
| Watson Plumbing & Heating Inc. | 5.0★ (2) | 10 mi |
How we ranked West Chester septic service companies
We scored 47 West Chester 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 West Chester 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 West Chester: frequently asked questions
Who is the best septic service company in West Chester?
By CR Score, the highest-ranked septic service company in West Chester, PA is OnSite Management, Inc. with a CR Score of 62/100. It has 4.9★ from 83 Google reviews. It is open 24/7. Delaware Valley Septic, Sewer & Storm (#2) and McGovern Septic (#3) follow. We ranked 47 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in West Chester?
ContractorsRanked ranks 47 septic service companies serving West Chester, PA. 4 of them are based in West Chester; the rest serve it from nearby towns. Another 10 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in West Chester are open 24/7?
32 ranked septic service companies in West Chester post 24/7 hours. The highest-ranked are OnSite Management, Inc. (#1), Delaware Valley Septic, Sewer & Storm (#2) and McGovern Septic (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in West Chester work on weekends?
38 of 47 ranked septic service companies post Saturday hours and 34 post Sunday hours. The highest-ranked open Saturdays are OnSite Management, Inc. (#1), Delaware Valley Septic, Sewer & Storm (#2) and McGovern Septic (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do West Chester septic service companies have?
The median Google rating among 47 rated septic service companies in West Chester is 5.0★, with a median of 28 reviews. Mattioni Plumbing, Heating & Cooling has the most, 3,621 reviews, and ranks #6. 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 West Chester count in this ranking?
Yes, if they are within 25 mi of the West Chester 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 West Chester
- November 2026: CR Scores recalculated for 47 septic service companies serving West Chester.
More septic service companies and West Chester pages
Septic service companies near West Chester
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