61/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 686 Google reviews, the most in San Marcos.
Best Septic Service Companies in San Marcos, TX (2026)
67 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in San Marcos: Luna Environmental, CR Score 61/100; 4.8★ from 686 Google reviews; open Saturdays until 5 PM.
- 2
Best for emergencies (open 24/7): Hines Septic Of San Marcos, posts 24/7 hours; ranked #2 of 67.
- 6
Most-reviewed: Aerobic Services, 668 Google reviews at 4.9★, the most of 67 ranked after Luna Environmental; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
67 San Marcos septic service companies are ranked here by CR Score, from ten published factors. 15 are open 24/7, 26 open Saturdays and 18 open Sundays, based on posted hours. The median Google rating is 4.9★ across 67 rated businesses.
Top 10 septic service companies in San Marcos at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Luna Environmental | 61 | 4.8★ (686) | Austin, 13 mi away | Sat · Evenings | Overall |
| 2 | Hines Septic Of San Marcos | 61 | 4.9★ (88) | Austin, 14 mi away | 24/7 | Emergencies |
| 3 | Wee Bee Waste Services | 61 | 5.0★ (114) | Austin, 18 mi away | 24/7 | — |
| 4 | Hometown Septic Services, LLC. | 60 | 5.0★ (104) | Austin, 19 mi away | 24/7 | — |
| 5 | Foster's Septic Cleaning and Inspections | 59 | 4.9★ (94) | Austin, 8 mi away | Sat | — |
| 6 | Aerobic Services | 59 | 4.9★ (668) | Canyon Lake, 16 mi away | — | Most reviews |
| 7 | Dillon Septic | 58 | 4.9★ (218) | San Antonio, 25 mi away | 24/7 | — |
| 8 | Carter Septic Solutions LLC | 58 | 4.8★ (34) | New Braunfels, 16 mi away | 24/7 | — |
| 9 | King Key RV Services | 58 | 4.9★ (78) | Pflugerville, 24 mi away | 24/7 | — |
| 10 | Smith Septic Services | 58 | 5.0★ (16) | Austin, 14 mi away | 24/7 | — |
The 67 best septic service companies in San Marcos, 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 Austin, 14 mi away
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 88 Google reviews, listed on Google as “Septic system service”.
Based in Austin, 18 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 114 Google reviews, listed on Google as “Septic system service”.
Based in Austin, 19 mi away
60/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 104 Google reviews, listed on Google as “Septic system service”.
Based in Austin, 8 mi away
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 94 Google reviews, listed on Google as “Septic system service”.
Based in Canyon Lake, 16 mi away
59/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 668 Google reviews, listed on Google as “Septic system service”.
Based in San Antonio, 25 mi away
58/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 218 Google reviews, listed on Google as “Septic system service”.
Based in New Braunfels, 16 mi away
58/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.8★ from 34 Google reviews, listed on Google as “Septic system service”.
Based in Pflugerville, 24 mi away
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 78 Google reviews, listed on Google as “Septic system service”.
Based in Austin, 14 mi away
58/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Septic system service”.
Based in San Marcos
57/100CR ScoreRanked #11 because of its Google rating and review volume: 4.8★ from 81 Google reviews.
Based in New Braunfels, 11 mi away
57/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 114 Google reviews, listed on Google as “Septic system service”.
Based in Kyle, 14 mi away
57/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.8★ from 37 Google reviews, listed on Google as “Septic system service”.
Based in New Braunfels, 18 mi away
57/100CR ScoreRanked #14 because of its Google rating and review volume: 4.9★ from 445 Google reviews.
#15 CRAMT Enterprise
Based in Buda, 17 mi away
57/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Septic system service”.
Based in San Marcos
57/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Septic system service”.
Based in San Marcos
56/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.6★ from 36 Google reviews, listed on Google as “Septic system service”.
Based in New Braunfels, 17 mi away
56/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Septic system service”.
#19 Zoom Drain
Based in Buda, 15 mi away
56/100CR ScoreRanked #19 because of its Google rating and review volume: 4.9★ from 209 Google reviews.
#20 Apex Septic Co.
Based in San Marcos
56/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Septic system service”.
Based in Canyon Lake, 6 mi away
56/100CR ScoreRanked #21 because of its Google rating and review volume: 5.0★ from 50 Google reviews.
#22 Aerobic Services
Based in Austin, 22 mi away
56/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 265 Google reviews, listed on Google as “Septic system service”.
Based in Austin, 24 mi away
55/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 105 Google reviews, listed on Google as “Septic system service”.
Based in New Braunfels, 18 mi away
55/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Septic system service”.
Based in Austin, 18 mi away
54/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 29 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 67 ranked septic service companies here; the rest are on their profiles.
Also serving San Marcos
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 |
|---|---|---|
| Aerobic Environmental, LLC | 5.0★ (1) | In San Marcos |
| Aloha Septic, llc. | 19 mi | |
| B Simpson Excavating Bulldozer Backhoe Land Clearing | 15 mi | |
| Bar-K Septic Systems LLC | 19 mi | |
| C&R Environmental & Septic Services, LLC | In San Marcos | |
| Central Texas Aerobics, Inc | 15 mi | |
| Full Circle Rainwater Services | 3.0★ (2) | 24 mi |
| Grindstone Sitework | 5.0★ (1) | 14 mi |
| Hill Country Septic and Surveying | 5.0★ (2) | 24 mi |
| Lonestar Excavating | 23 mi | |
| Massey's Greasetrap & Septic | 15 mi | |
| Oscar’s Septic Tank Services | 24 mi | |
| Patterson Plumbing & Septic | 5.0★ (1) | 10 mi |
| PLAN-IT Septic Design & Services, LLC | 5.0★ (1) | 19 mi |
| Shimek Septic Cleaning | 5.0★ (1) | 19 mi |
| Silva Septic Solutions | 21 mi | |
| Tommy Spiller Backhoe & Dozer Service | 5.0★ (2) | In San Marcos |
| TX Plumbing Bureau | 5.0★ (2) | 9 mi |
How we ranked San Marcos septic service companies
We scored 67 San Marcos 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 San Marcos 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 San Marcos: frequently asked questions
Who is the best septic service company in San Marcos?
By CR Score, the highest-ranked septic service company in San Marcos, TX is Luna Environmental with a CR Score of 61/100. It has 4.8★ from 686 Google reviews. It is open Saturdays until 5 PM. Hines Septic Of San Marcos (#2) and Wee Bee Waste Services (#3) follow. We ranked 67 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in San Marcos?
ContractorsRanked ranks 67 septic service companies serving San Marcos, TX. 8 of them are based in San Marcos; the rest serve it from nearby towns. Another 18 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in San Marcos are open 24/7?
15 ranked septic service companies in San Marcos post 24/7 hours. The highest-ranked are Hines Septic Of San Marcos (#2), Wee Bee Waste Services (#3) and Hometown Septic Services, LLC. (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in San Marcos work on weekends?
26 of 67 ranked septic service companies post Saturday hours and 18 post Sunday hours. The highest-ranked open Saturdays are Luna Environmental (#1), Hines Septic Of San Marcos (#2) and Wee Bee Waste Services (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do San Marcos septic service companies have?
The median Google rating among 67 rated septic service companies in San Marcos is 4.9★, with a median of 29 reviews. Luna Environmental has the most, 686 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 San Marcos count in this ranking?
Yes, if they are within 25 mi of the San Marcos 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 San Marcos
- November 2026: CR Scores recalculated for 67 septic service companies serving San Marcos.
More septic service companies and San Marcos pages
Septic service companies near San Marcos
- Septic service companies in Kyle, TX62 ranked
- Septic service companies in Buda, TX68 ranked
- Septic service companies in Lockhart, TX31 ranked
- Septic service companies in New Braunfels, TX65 ranked
- Septic service companies in Canyon Lake, TX53 ranked
- Septic service companies in Seguin, TX39 ranked
- Septic service companies in Cibolo, TX67 ranked
- Septic service companies in Austin, TX98 ranked
- Septic service companies in Schertz, TX73 ranked
- Septic service companies in Universal City, TX71 ranked
Other trades in San Marcos
- Roofers in San Marcos645 ranked
- Plumbers in San Marcos167 ranked
- Electricians in San Marcos148 ranked
- HVAC contractors in San Marcos213 ranked
- General contractors in San Marcos193 ranked
- Painters in San Marcos60 ranked
- Landscapers in San Marcos85 ranked
- Handymen in San Marcos46 ranked
- Kitchen remodelers in San Marcos131 ranked
- Bathroom remodelers in San Marcos129 ranked
- Flooring contractors in San Marcos101 ranked
- Tile installers in San Marcos31 ranked
- Drywall contractors in San Marcos9 ranked
- Concrete contractors in San Marcos155 ranked
- Fence contractors in San Marcos93 ranked
- Deck builders in San Marcos79 ranked
- Siding contractors in San Marcos132 ranked
- Window installers in San Marcos152 ranked
- Gutter installers in San Marcos84 ranked
- Insulation contractors in San Marcos38 ranked
- Solar installers in San Marcos132 ranked
- Garage door repair companies in San Marcos36 ranked
- Foundation repair companies in San Marcos135 ranked
- Tree services in San Marcos133 ranked
- Masonry contractors in San Marcos62 ranked
- Water damage restoration companies in San Marcos232 ranked
- Home builders in San Marcos567 ranked
- Demolition contractors in San Marcos37 ranked
- Window cleaners in San Marcos30 ranked
- Pressure washing companies in San Marcos47 ranked
- Pest control companies in San Marcos70 ranked
- Paving contractors in San Marcos44 ranked
- Auto glass repair shops in San Marcos48 ranked
- Excavating contractors in San Marcos65 ranked
- Pool builders in San Marcos240 ranked
- All contractors in San Marcos