61/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 268 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Ansonia, CT (2026)
125 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Ansonia: Brown Septic Systems, CR Score 61/100; 5.0★ from 268 Google reviews; open Saturdays until 5 PM.
- 2
Best for emergencies (open 24/7): Aft-End Septic LLC, posts 24/7 hours; ranked #2 of 125.
- 4
Most-reviewed: Modern Home Inspections LLC, 907 Google reviews at 5.0★, the most of 125 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
125 Ansonia septic service companies are ranked here by CR Score, from ten published factors. 36 are open 24/7, 69 open Saturdays and 49 open Sundays, based on posted hours. The median Google rating is 4.9★ across 125 rated businesses.
Top 10 septic service companies in Ansonia at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Brown Septic Systems | 61 | 5.0★ (268) | Southbury, 9 mi away | Sat | Overall |
| 2 | Aft-End Septic LLC | 61 | 5.0★ (17) | Ansonia | 24/7 | Emergencies |
| 3 | Mr. Rooter Plumbing of Southern Fairfield County | 61 | 4.9★ (722) | Shelton, 3 mi away | 24/7 | — |
| 4 | Modern Home Inspections LLC | 61 | 5.0★ (907) | Meriden, 20 mi away | Sat · Evenings | Most reviews |
| 5 | Andersons Septic Service | 61 | 5.0★ (244) | Wilton, 23 mi away | 24/7 | — |
| 6 | Rick's Pump and Water Service | 61 | 4.9★ (171) | Danbury, 18 mi away | 24/7 | — |
| 7 | Laco Site Services | 60 | 5.0★ (24) | Ansonia | Sat · Sun · Evenings | — |
| 8 | Unlimited Excavation and Construction | 59 | 5.0★ (27) | Bridgeport, 12 mi away | 24/7 | — |
| 9 | Koseski & Son Septic Service LLC | 59 | 5.0★ (140) | Woodbridge, 5 mi away | — | — |
| 10 | Unlimited Excavation and Construction Orange | 59 | 4.7★ (14) | Orange, 6 mi away | 24/7 | — |
The 125 best septic service companies in Ansonia, 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 Ansonia
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Septic system service”.
Based in Shelton, 3 mi away
61/100CR ScoreRanked #3 because of its Google rating and review volume: 4.9★ from 722 Google reviews.
Based in Meriden, 20 mi away
61/100CR ScoreRanked #4 because of its Google rating and review volume: 5.0★ from 907 Google reviews, the most in Ansonia.
Based in Wilton, 23 mi away
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 244 Google reviews, listed on Google as “Septic system service”.
Based in Danbury, 18 mi away
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 171 Google reviews, listed on Google as “Septic system service”.
Based in Ansonia
60/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Septic system service”.
Based in Bridgeport, 12 mi away
59/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Septic system service”.
Based in Woodbridge, 5 mi away
59/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 140 Google reviews, listed on Google as “Septic system service”.
Based in Orange, 6 mi away
59/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “Septic system service”.
Based in Stratford, 11 mi away
59/100CR ScoreRanked #11 because of its Google rating and review volume: 4.9★ from 171 Google reviews.
Based in Bridgeport, 15 mi away
58/100CR ScoreRanked #12 because of its Google rating and review volume: 5.0★ from 167 Google reviews.
Based in Ansonia
58/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.6★ from 35 Google reviews, listed on Google as “Plumber”.
Based in New Milford, 11 mi away
57/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “Septic system service”.
Based in North Branford, 17 mi away
57/100CR ScoreRanked #15 because of its Google rating and review volume: 4.9★ from 742 Google reviews.
Based in Hamden, 7 mi away
57/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.8★ from 17 Google reviews, listed on Google as “Septic system service”.
Based in Stamford, 22 mi away
57/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 48 Google reviews, listed on Google as “Septic system service”.
Based in Danbury, 20 mi away
57/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 120 Google reviews, listed on Google as “Septic system service”.
Based in Fairfield, 16 mi away
57/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Septic system service”.
Based in Easton, 14 mi away
57/100CR ScoreRanked #20 because of its Google rating and review volume: 4.9★ from 311 Google reviews.
Based in Shelton, 6 mi away
57/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 8 Google reviews, listed on Google as “Septic system service”.
Based in Shelton, 4 mi away
56/100CR ScoreRanked #22 because of its Google rating and review volume: 4.7★ from 131 Google reviews.
Based in Prospect, 12 mi away
56/100CR ScoreRanked #23 because of its Google rating and trade focus: 3.9★ from 23 Google reviews, listed on Google as “Septic system service”.
Based in Wallingford, 16 mi away
56/100CR ScoreRanked #24 because of its Google rating and review volume: 4.8★ from 495 Google reviews.
Based in Jefferson Valley-Yorktown, 24 mi away
56/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Septic system service”.
Septic service companies ranked #26 to #50
#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 125 ranked septic service companies here; the rest are on their profiles.
Also serving Ansonia
20 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 |
|---|---|---|
| Baldino & Son Excavating-Sewer | 5.0★ (1) | 6 mi |
| Bonetti Septic & Excavation | 5.0★ (1) | 6 mi |
| Code Septic Design | 5.0★ (1) | 4 mi |
| Delfino Septic Tank Services | 5.0★ (2) | 23 mi |
| Dirt Cheap Digger - Mini Excavation | 5.0★ (1) | 19 mi |
| Enviro Sewer & Drain | 5.0★ (1) | 3 mi |
| Frank's Septic and Excavating | 5.0★ (1) | 7 mi |
| Freddy's Sewer & Drain Cleaning | 5.0★ (2) | 14 mi |
| GL Scully Company | 5.0★ (1) | 7 mi |
| Luis Septic & Drain Services LLC | 5.0★ (1) | In Ansonia |
| Oly Mattera Construction | 5.0★ (2) | 16 mi |
| P & D Septic Services | 5.0★ (1) | 5 mi |
| Pro-Tech Rooter, Sewer Service, Drain Cleaning | 5.0★ (1) | 11 mi |
| River Valley Construction Company, LLC | 5.0★ (1) | 20 mi |
| Santini Septic Services | 1.0★ (2) | 22 mi |
| Shelton Septic & Sewer | 4.0★ (2) | 11 mi |
| Skyline Septic | 5.0★ (2) | 15 mi |
| SOS Sewer & Drain Cleaning | 5.0★ (2) | 9 mi |
| Talarico Septic & Excavating LLC | 5.0★ (2) | 11 mi |
| Terrene Services | 5.0★ (1) | 11 mi |
How we ranked Ansonia septic service companies
We scored 125 Ansonia 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 2, 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 Ansonia 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 Ansonia: frequently asked questions
Who is the best septic service company in Ansonia?
By CR Score, the highest-ranked septic service company in Ansonia, CT is Brown Septic Systems with a CR Score of 61/100. It has 5.0★ from 268 Google reviews. It is open Saturdays until 5 PM. Aft-End Septic LLC (#2) and Mr. Rooter Plumbing of Southern Fairfield County (#3) follow. We ranked 125 septic service companies on ten factors, last updated November 2, 2026.
How many septic service companies are there in Ansonia?
ContractorsRanked ranks 125 septic service companies serving Ansonia, CT. 3 of them are based in Ansonia; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Ansonia are open 24/7?
36 ranked septic service companies in Ansonia post 24/7 hours. The highest-ranked are Aft-End Septic LLC (#2), Mr. Rooter Plumbing of Southern Fairfield County (#3) and Andersons Septic Service (#5). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Ansonia work on weekends?
69 of 125 ranked septic service companies post Saturday hours and 49 post Sunday hours. The highest-ranked open Saturdays are Brown Septic Systems (#1), Aft-End Septic LLC (#2) and Mr. Rooter Plumbing of Southern Fairfield County (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Ansonia septic service companies have?
The median Google rating among 125 rated septic service companies in Ansonia is 4.9★, with a median of 15 reviews. Modern Home Inspections LLC has the most, 907 reviews, and ranks #4. 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 Ansonia count in this ranking?
Yes, if they are within 25 mi of the Ansonia 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 Ansonia
- November 2026: CR Scores recalculated for 125 septic service companies serving Ansonia.
- November 2026: 2 duplicate listings merged.
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