61/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 760 Google reviews, the most in Harlingen.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Harlingen, TX (2026)
16 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Harlingen: Roto-Rooter Plumbing & Drain - Lower RGV, CR Score 61/100; 4.8★ from 760 Google reviews; open 24/7.
- 8
Best for emergencies (open 24/7): Martin's Sewer & Drain Clean, posts 24/7 hours; ranked #8 of 16.
- 13
Most-reviewed: Mr. Rooter Plumbing of Brownsville, 110 Google reviews at 4.7★, the most of 16 ranked after Roto-Rooter Plumbing & Drain - Lower RGV; ranked #13.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
16 Harlingen septic service companies are ranked here by CR Score, from ten published factors. 4 are open 24/7, 8 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.5★ across 16 rated businesses.
Top 10 septic service companies in Harlingen at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Roto-Rooter Plumbing & Drain - Lower RGV | 61 | 4.8★ (760) | Harlingen | 24/7 | Overall |
| 2 | Lewis Septic Services | 58 | 4.9★ (18) | Harlingen | — | — |
| 3 | Richard's Septic Services | 57 | 5.0★ (29) | La Feria, 8 mi away | — | — |
| 4 | M.A.Y Septic Service | 55 | 5.0★ (47) | Mercedes, 11 mi away | — | — |
| 5 | Gulf Coast Septic Service, LLC | 54 | 4.5★ (31) | Los Fresnos, 15 mi away | Sat | — |
| 6 | Ace's Septic Services LLC | 54 | 5.0★ (11) | McAllen, 12 mi away | — | — |
| 7 | Angel's Septic Tank Services | 53 | 4.5★ (32) | Mercedes, 18 mi away | Sat · Evenings | — |
| 8 | Martin's Sewer & Drain Clean | 53 | 4.5★ (8) | San Benito, 8 mi away | 24/7 | Emergencies |
| 9 | B J's Septic Tank | 53 | 4.3★ (6) | San Benito, 8 mi away | Sat · Evenings | — |
| 10 | Always Here Septic | 53 | 4.7★ (10) | Alton, 5 mi away | 24/7 | — |
The 16 best septic service companies in Harlingen, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Harlingen
58/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 18 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in La Feria, 8 mi away
57/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Mercedes, 11 mi away
55/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 47 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Los Fresnos, 15 mi away
54/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.5★ 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 McAllen, 12 mi away
54/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Mercedes, 18 mi away
53/100CR ScoreRanked #7 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 San Benito, 8 mi away
53/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Benito, 8 mi away
53/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.3★ 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 Alton, 5 mi away
53/100CR ScoreRanked #10 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 La Feria, 8 mi away
52/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.1★ from 21 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Weslaco, 17 mi away
52/100CR ScoreRanked #12 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 Brownsville, 21 mi away
52/100CR ScoreRanked #13 because of its Google rating and review volume: 4.7★ from 110 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Los Fresnos, 13 mi away
50/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.3★ from 11 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Harlingen
50/100CR ScoreRanked #15 because of its Google rating and trade focus: 2.6★ from 5 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in San Benito, 9 mi away
43/100CR ScoreRanked #16 because of its Google rating and trade focus: 3.0★ from 4 Google reviews, listed on Google as “General contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Also serving Harlingen
4 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) | 18 mi |
| G C Septic Services | 1.0★ (1) | 16 mi |
| Ljn Services Inc | 15 mi | |
| M.A.Y Septic Service | 5.0★ (1) | In Harlingen |
How we ranked Harlingen septic service companies
We scored 16 Harlingen 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 Harlingen 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 Harlingen: frequently asked questions
Who is the best septic service company in Harlingen?
By CR Score, the highest-ranked septic service company in Harlingen, TX is Roto-Rooter Plumbing & Drain - Lower RGV with a CR Score of 61/100. It has 4.8★ from 760 Google reviews. It is open 24/7. Lewis Septic Services (#2) and Richard's Septic Services (#3) follow. We ranked 16 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Harlingen?
ContractorsRanked ranks 16 septic service companies serving Harlingen, TX. 3 of them are based in Harlingen; the rest serve it from nearby towns. Another 4 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Harlingen are open 24/7?
4 ranked septic service companies in Harlingen post 24/7 hours. The highest-ranked are Roto-Rooter Plumbing & Drain - Lower RGV (#1), Martin's Sewer & Drain Clean (#8) and Always Here Septic (#10). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Harlingen work on weekends?
8 of 16 ranked septic service companies post Saturday hours and 4 post Sunday hours. The highest-ranked open Saturdays are Roto-Rooter Plumbing & Drain - Lower RGV (#1), Gulf Coast Septic Service, LLC (#5) and Angel's Septic Tank Services (#7). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Harlingen septic service companies have?
The median Google rating among 16 rated septic service companies in Harlingen is 4.5★, with a median of 15 reviews. Roto-Rooter Plumbing & Drain - Lower RGV has the most, 760 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 Harlingen count in this ranking?
Yes, if they are within 25 mi of the Harlingen 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 Harlingen
- November 2026: CR Scores recalculated for 16 septic service companies serving Harlingen.
More septic service companies and Harlingen pages
Septic service companies near Harlingen
- Septic service companies in San Benito, TX16 ranked
- Septic service companies in Mercedes, TX24 ranked
- Septic service companies in Weslaco, TX28 ranked
- Septic service companies in Raymondville, TX14 ranked
- Septic service companies in Donna, TX26 ranked
- Septic service companies in Brownsville, TX8 ranked
- Septic service companies in Alamo, TX21 ranked
- Septic service companies in San Juan, TX21 ranked
- Septic service companies in Edinburg, TX22 ranked
- Septic service companies in Pharr, TX21 ranked
Other trades in Harlingen
- Roofers in Harlingen137 ranked
- Plumbers in Harlingen44 ranked
- Electricians in Harlingen55 ranked
- HVAC contractors in Harlingen103 ranked
- General contractors in Harlingen101 ranked
- Painters in Harlingen17 ranked
- Landscapers in Harlingen28 ranked
- Handymen in Harlingen8 ranked
- Kitchen remodelers in Harlingen19 ranked
- Bathroom remodelers in Harlingen19 ranked
- Flooring contractors in Harlingen20 ranked
- Tile installers in Harlingen6 ranked
- Concrete contractors in Harlingen33 ranked
- Fence contractors in Harlingen24 ranked
- Deck builders in Harlingen8 ranked
- Siding contractors in Harlingen10 ranked
- Window installers in Harlingen31 ranked
- Gutter installers in Harlingen17 ranked
- Insulation contractors in Harlingen25 ranked
- Solar installers in Harlingen41 ranked
- Garage door repair companies in Harlingen14 ranked
- Foundation repair companies in Harlingen24 ranked
- Tree services in Harlingen32 ranked
- Masonry contractors in Harlingen12 ranked
- Water damage restoration companies in Harlingen37 ranked
- Home builders in Harlingen101 ranked
- Demolition contractors in Harlingen11 ranked
- Window cleaners in Harlingen19 ranked
- Pressure washing companies in Harlingen24 ranked
- Pest control companies in Harlingen37 ranked
- Paving contractors in Harlingen22 ranked
- Auto glass repair shops in Harlingen40 ranked
- Excavating contractors in Harlingen12 ranked
- Pool builders in Harlingen63 ranked
- All contractors in Harlingen