Jaime AlfaroWater damage can quietly destroy a home or commercial building long before it becomes visible.
Many property managers and business owners only notice the problem once operations are disrupted by a hidden pipe failure, while homeowners often discover it through an unexpectedly high utility bill.
To help prevent those costly situations, we reviewed local plumbers to identify the best leak detection in San Antonio. The focus was on transparent pricing, fast response times, and the use of modern, non-invasive technology.
Here is a guide to the top professionals in San Antonio who specialize in accurately finding and resolving hidden leaks before they turn into major repairs.
How much do leak detection services cost in San Antonio?
Leak detection services in San Antonio generally cost between $175 and $500, with specialized methods reaching the higher end of that range.
| Service Type | Estimated Cost |
| General Inspection (Plumber) | $175 – $350 |
| Specialized Detection | $400 – $500 |
| Video Camera/Hydrostatic Inspection | $150 – $500 |
| Smoke Testing | $250 – $300 |
1. Air & Drain Works
Website: drainworkstx.com
Address: 4719 Broom St, San Antonio, TX 78217
Contact: 210-489-1806
Hours: Available 24/7
Working with Air & Drain Works can help keep maintenance costs more manageable. They offer a 10% discount for active duty military members and retirees across all services.
They also provide a price-match style guarantee, which helps ensure their rates stay competitive.
They bring over 20 years of combined experience, so they’re comfortable handling everything from general plumbing issues to more hidden moisture problems in buildings.
For homeowners wanting a deeper check, they also offer a 65-point inspection at a flat rate of under $40. This makes it easy to get a quick overall assessment.
They also handle larger commercial sewer work using hydrojetting technology when needed.
That said, their membership plan has some limitations. Benefits can’t be transferred if you move to a different home. Covered services are also typically required to be completed in a single visit, which can feel restrictive in some situations.
Customer Reviews
Danuel and John did an amazing job!! Very professional and explained everything they were going to do and answered our questions if we had any. We had a leak and it was costing us a lot for these past 2 months. He found where it was and let us know what his plan was moving forward and we were on the same page at all times. Very knowledgeable and we definitely recommend Daniel and John for anything you might need. In the end, the shower looked brand new and the leaks stopped. Life savers! 👏👏
- Shakira Pagan | Google Reviews
David came by for a leak detection check before I had some foundation work done. He was professional, courteous, and very helpful in answering all of my questions, even when they weren’t directly related to the job at hand. He improved parts of my system that he noticed were deteriorating, again even when that wasn’t the reason for his visit. Finally, he cleaned things up very nicely when he was done.
- Michael Conlon | Google Reviews
2. Reliant Plumbing – San Antonio
Website: reliantplumbing.com
Address: 1119 Fresno St, San Antonio, TX 78201
Contact: 210-468-8020
Hours: Available 24/7
Reliant Plumbing – San Antonio’s key strength is accurately diagnosing leaks without tearing into walls, thanks to their use of advanced inspection tools and pressure testing methods.
They’re able to isolate problem areas by identifying pressure drops, which helps pinpoint exactly where a pipe issue is occurring.
We recently spoke with a landlord who called them after a sudden overnight pipe burst. She noted that their decentralized dispatch system helped speed things up since technicians can head out directly from home rather than a central office.
We also appreciate that they focus on non-destructive methods to avoid unnecessary damage to walls or flooring. They actually use tracer wire systems to map underground utilities.
That said, there’s a mandatory upfront dispatch fee just for an initial visit. Weekend appointments can also come with additional travel or assessment charges, which is worth keeping in mind when scheduling.
Customer Reviews
Forrest was really helpful and the whole team at reliant was super nice and very friendly. I got a notice from SAWS that I had a leak. Called reliant and they sent Forrest out to take a look. He was really great and made some calls to his team to assist with replacing the part under warranty. Overall really great experience and issue was fixed the same day!
- CatAtak12 | Google Reviews
After receiving a second bill from SAWS for over $500, we knew we had a leak somewhere. We called Reliant Plumbing and are so glad we did. They were here without an hour of calling. Their crew was very professional, detected the source of the leak within a few hours and had it repaired in the same day. They aren’t cheap, but you get what you pay for. I can go to bed tonight knowing that we aren’t wasting water or money anymore.
- Misty Mercado | Google Reviews
3. Roto-Rooter Plumbing & Water Cleanup
Website: rotorooter.com
Address: 1426 W Commerce St, San Antonio, TX 78207
Contact: 210-810-3111
Hours: Available 24/7
Roto-Rooter Plumbing & Water Cleanup coordinates directly with your insurance provider while handling the cleanup and restoration work at the same time.
Their mitigation teams are IICRC-certified, so they’re trained in proper water extraction and sanitation standards.
They also support customers managing multiple properties through a mobile app, which makes coordinating service requests more convenient.
We also appreciate that they add extra dispatch fees outside normal operating hours, which can be reassuring during emergencies.
That said, fast response can come with trade-offs. Severe water damage often requires removing built-in fixtures or structural elements. Timelines also usually stay flexible until drying conditions are fully assessed.
Customer Reviews
Joseph was very profession and methodical in his efforts to identify our leak to a proficient level. He was able to fix the leak and cut lines for isolation testing within a single day and super understanding about our situation. When everything seems to be going wrong a no nonsense approach to resolving problems is very grounding. Great customer service is always appreciated and his was excellent.
- David Flores | Google Reviews
Tech 150 George was truly awesome. I couldn’t have asked for a better technician to come out to service my issue. He immediately found the leak and provided an affordable and fair cost repair option. I would definitely use them again in the future.
- Abram Saldana | Google Reviews
4. bluefrog Plumbing and Drain of San Antonio
Website: bluefrogsanantonio.com
Address: 6075 De Zavala Rd Suite G, San Antonio, TX 78249
Contact: 210-460-2994
Hours: Available 24/7
Bluefrog can easily identify hidden moisture without tearing apart your living space, thanks to its use of specialized thermal and sensing equipment.
They also offer faster response times in certain service areas, especially when appointments are scheduled before midday.
We also appreciate their transparency. When I had a technician inspect a stubborn leak in a utility room, they clearly explained the estimate breakdown, including labor, parts, and any required permits.
While the quote that they provide during the initial assessment is non-binding and can change if they discover more issues, having a rough estimate helps with planning. The technicians also immediately inform you of any charges that may increase the quote.
The technicians also take time to explain issues in a straightforward way so clients can understand what’s happening.
On top of that, their protection program provides a 15% discount on services and products.
That said, the membership discount is capped at $150 per visit.
Customer Reviews
Herman Mccumber with Bluefrog plumbing and drain provided excellent service. He was very professional and knowledgeable. I am pleased with his work. I had a leak with no visible area. Herman was able to find it and repair it.
- Luis Fernandez | Google Reviews
5. Patriot Plumbing LLC
Website: patriotplumbing-tx.com
Address: 10401 I-10 Suite 122, San Antonio, TX 78230
Contact: (210) 934-6649
Hours: Available 24/7
Having a master-level tradesman directly oversee all field operations adds a strong sense of confidence in the quality of the repair work.
Patriot Plumbing LLC supports this standard with a transparent quoting model that helps protect clients from hidden fees or unexpected costs after service.
The team also benefits from a strategic location along a major transit corridor, which allows them to reach most nearby properties in under 30 minutes.
They additionally upgrade residential systems with technology that can detect hidden moisture automatically.
We also appreciate their commitment to supporting financially distressed individuals, although their pro-bono work is limited to 12 days per year.
That said, their fully insured services come at a premium compared to unlicensed or less-established providers.
Customer Reviews
Highly recommend Patriot plumbing! Older home had leak through garage that 3 other services could not detect point of origin. Chris did an initial assessment , then called in his partner for a second consult to ensure scope of project was accurate before communicating multiple issues discovered.
Worked with us to keep focus on our budget AND secure most important issue first.
- Tina Bertagni | Google Reviews
