58/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 1,034 Google reviews, the most in Alton.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Alton, TX (2026)
19 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Alton: Roto-Rooter Plumbing & Drain Services - Upper RGV, CR Score 58/100; 4.8★ from 1,034 Google reviews; open 24/7.
- 6
Best for emergencies (open 24/7): Agarmar Logistics LLC, posts 24/7 hours; ranked #6 of 19.
- 3
Most-reviewed: Zuniga's Septic Service, 37 Google reviews at 5.0★, the most of 19 ranked after Roto-Rooter Plumbing & Drain Services - Upper RGV; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
19 Alton septic service companies are ranked here by CR Score, from ten published factors. 5 are open 24/7, 15 open Saturdays and 7 open Sundays, based on posted hours. The median Google rating is 4.5★ across 19 rated businesses.
Top 10 septic service companies in Alton at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Roto-Rooter Plumbing & Drain Services - Upper RGV | 58 | 4.8★ (1,034) | Edinburg, 12 mi away | 24/7 | Overall |
| 2 | ST Sanitation | 57 | 5.0★ (31) | McAllen, 11 mi away | Sat · Sun | — |
| 3 | Zuniga's Septic Service | 57 | 5.0★ (37) | Edinburg, 8 mi away | Sat | Most reviews |
| 4 | Garcia Septic Tank | 56 | 5.0★ (7) | McAllen, 4 mi away | Sat · Sun · Evenings | — |
| 5 | 1-P Grease Trap & Septic Services LLC | 56 | 4.2★ (5) | McAllen, 1 mi away | Sat · Sun | — |
| 6 | Agarmar Logistics LLC | 55 | 5.0★ (4) | Edinburg, 10 mi away | 24/7 | Emergencies |
| 7 | F & J Septic Tanks and Services | 55 | 4.6★ (18) | McAllen, 13 mi away | 24/7 | — |
| 8 | Always Here Septic | 53 | 4.7★ (10) | Alton | 24/7 | — |
| 9 | Montemayor Septic Tanks | 53 | 5.0★ (12) | Edinburg, 11 mi away | Sat | — |
| 10 | Trevino & Sons Septic Tanks | 53 | 3.9★ (18) | Edinburg, 11 mi away | — | — |
The 19 best septic service companies in Alton, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in McAllen, 11 mi away
57/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Edinburg, 8 mi away
57/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in McAllen, 4 mi away
56/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in McAllen, 1 mi away
56/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Edinburg, 10 mi away
55/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in McAllen, 13 mi away
55/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.6★ 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 Alton
53/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.7★ from 10 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Edinburg, 11 mi away
53/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Edinburg, 11 mi away
53/100CR ScoreRanked #10 because of its Google rating and trade focus: 3.9★ from 18 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#11 JLR Septic Tanks
Based in Palmview, 5 mi away
53/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Edinburg, 13 mi away
52/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.3★ 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 Mercedes, 21 mi away
52/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.5★ from 32 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Edinburg, 13 mi away
52/100CR ScoreRanked #14 because of its Google rating and trade focus: 3.8★ 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 McAllen, 1 mi away
51/100CR ScoreRanked #15 because of its Google rating and trade focus: 2.8★ from 9 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Palmview, 5 mi away
51/100CR ScoreRanked #16 because of its Google rating and trade focus: 3.5★ from 11 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in McAllen, 22 mi away
51/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Weslaco, 23 mi away
50/100CR ScoreRanked #18 because of its Google rating and trade focus: 3.3★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Pharr, 8 mi away
49/100CR ScoreRanked #19 because of its Google rating and trade focus: 3.8★ from 20 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Also serving Alton
8 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 |
|---|---|---|
| AA5 Backhoe service | 5.0★ (2) | 22 mi |
| GBS Get Tanked | 1.0★ (1) | 3 mi |
| Griffin Industries Inc | 13 mi | |
| Leo's Septic Service | 5.0★ (2) | 7 mi |
| Mata's Septic Tanks | 1.0★ (2) | 11 mi |
| OVOA Septic Tanks L.L.C. | 20 mi | |
| Professional Clean | 19 mi | |
| Rosales Septic Tank Cleaning | 2 mi |
How we ranked Alton septic service companies
We scored 19 Alton 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 Alton 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 Alton: frequently asked questions
Who is the best septic service company in Alton?
By CR Score, the highest-ranked septic service company in Alton, TX is Roto-Rooter Plumbing & Drain Services - Upper RGV with a CR Score of 58/100. It has 4.8★ from 1,034 Google reviews. It is open 24/7. ST Sanitation (#2) and Zuniga's Septic Service (#3) follow. We ranked 19 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Alton?
ContractorsRanked ranks 19 septic service companies serving Alton, TX. 1 of them is based in Alton; the rest serve it from nearby towns. Another 8 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Alton are open 24/7?
5 ranked septic service companies in Alton post 24/7 hours. The highest-ranked are Roto-Rooter Plumbing & Drain Services - Upper RGV (#1), Agarmar Logistics LLC (#6) and F & J Septic Tanks and Services (#7). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Alton work on weekends?
15 of 19 ranked septic service companies post Saturday hours and 7 post Sunday hours. The highest-ranked open Saturdays are Roto-Rooter Plumbing & Drain Services - Upper RGV (#1), ST Sanitation (#2) and Zuniga's Septic Service (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Alton septic service companies have?
The median Google rating among 19 rated septic service companies in Alton is 4.5★, with a median of 12 reviews. Roto-Rooter Plumbing & Drain Services - Upper RGV has the most, 1,034 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 Alton count in this ranking?
Yes, if they are within 25 mi of the Alton 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 Alton
- November 2026: CR Scores recalculated for 19 septic service companies serving Alton.
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