Alonso Service Company
100/100 ✓ TX Certified Backflow Tester Verified ★ 3.8 (13 reviews) 2 certified testersOn Austin Water list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Certified backflow testers in San Antonio, TX
7 backflow testing businesses work within 25 miles of San Antonio, 3 of them based in town. 6 have testers on Texas's roster and 1 are on the approved tester list of 3 water utilities.
7 businesses within 25 miles
2 for-hire testers based in San Antonio
Certified backflow testers near San Antonio
What the badges mean
- ✓ TX Certified Backflow Tester Verified
- A state roster lists at least one certified tester at this business, with a current certificate. The state sets the exam and renewal.
- ✓ TX Utility-Approved Tester Verified On the city list
- The company is on a water utility's own approved list (the second badge names the list). That is the utility's approval, not a state license, and it counts for that utility.
- 3 certified testers
- How many certified testers the roster lists at this business.
- ★ 4.8 (25 reviews)
- The Google rating, shown as Google reports it. It does not change the order.
Order is by our quality score, never by payment. How we verify listings.
Are you a backflow testing company near San Antonio? One sponsor per county, clearly labelled. Sponsor this county
Advanced Flow Technologies
100/100 ✓ TX Certified Backflow Tester Verified ★ 4.9 (15 reviews) 3 certified testersOn Austin Water list Backflow Testing
Verified Oct 2026 · Unclaimed listing
210 Backflow
100/100 ✓ TX Certified Backflow Tester Verified ★ 4.9 (11 reviews) 2 certified testersOn Austin Water list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Bear Fire Protection
90/100 ✓ TX Certified Backflow Tester Verified ★ 4.6 (7 reviews) On Austin Water list Backflow Testing
Verified Oct 2026 · Unclaimed listing
S A Rainmaker LLC
90/100 ✓ TX Certified Backflow Tester Verified ★ 4.2 (70 reviews) On Austin Water list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Ability Backflow
90/100 ✓ TX Utility-Approved Tester Verified ★ 4.9 (9 reviews) On City of Houston listOn McAllen Public Utility list Backflow Testing
Verified Oct 2026 · Unclaimed listing
AAA Water Solutions
90/100 ✓ TX Certified Backflow Tester Verified #BP0023374 ★ 5 (8 reviews) Backflow Testing
Verified Oct 2026 · Unclaimed listing
Price reports
What a backflow test costs in San Antonio
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Published prices nationwide
$29.99 to $100 per assembly
$0$25$50$75$100$125
Every published price, with its source: what a backflow test costs.
Failed test? Published repair, rebuild and replacement prices: what a backflow repair or replacement costs.
San Antonio Water System (SAWS): backflow test rules
- Who must test. A backflow prevention assembly must be tested and certified at installation and at least once a year after that by a licensed backflow tester. Source.
- Notices and deadlines. Customers must have their assemblies tested annually and the report submitted to SAWS by June 30 each year. Source.
- How the report is filed. The tester completes a Test and Maintenance (T and M) report for each assembly, and completed reports are submitted to BSI Online (bsionline.com). Source.
- Tester registration. Irrigation assemblies need a licensed backflow prevention assembly tester; fire line assemblies need a licensed fireline tester; recycled water assemblies need a tester with a gauge designated for recycled water. Source.
- Fees. City Code sets a fee per assembly delivered with the annual test report (amount in City Code section 10-83); the fee may be waived when the report is submitted online through SAWS's electronic submission program. Source.
Everything about San Antonio Water System (SAWS)'s backflow program
Independent certified testers based in San Antonio
Testers Texas's roster lists without a company. Names, certificate numbers and phones as the state publishes them.
| Town | Tester | Certificate | Phone |
|---|---|---|---|
| San Antonio | Daniel Maldonado | BP0017943 | (830) 660-1522 |
| Jeremy J McAuley | BP0024686 | (210) 578-6106 |
Never miss your annual backflow test
Most water utilities require the backflow assembly on an irrigation, fire or commercial line to be tested every year, and a missed test can mean a shutoff notice. Tell us when yours was last tested in San Antonio and we'll text you a month before it is due, with certified local testers ready to book.
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Backflow testing questions in San Antonio
Where are the backflow testing businesses listed for San Antonio based?
7 backflow testing businesses are listed within 25 miles of San Antonio. 3 are based in San Antonio itself, 3 more within 15 miles and 1 further out, up to 21 miles away. The closest is Alonso Service Company in Live Oak, under 1 mile from San Antonio.
Which tester lists are the businesses near San Antonio on?
6 have testers on Texas's roster and 1 are on the approved tester list of 3 water utilities. The Texas Commission on Environmental Quality roster was read October 6, 2026. It lists 2 for-hire testers based in San Antonio itself. 2 certified testers appear on the roster in San Antonio without a company; they are in the table on this page.
Which water utility sets the backflow test rules in San Antonio?
San Antonio Water System (SAWS). Who must test: A backflow prevention assembly must be tested and certified at installation and at least once a year after that by a licensed backflow tester.
How many of the backflow testing businesses near San Antonio have Google reviews?
7 of the 7 listed for San Antonio have 3 or more Google reviews. S A Rainmaker LLC has the most reviews, 70, with an average of 4.2 stars, as Google showed them at our last check.
Roster: Texas Commission on Environmental Quality, read October 6, 2026.
Approved list: Austin Water registered Water Services Technicians, Austin Water.
Approved list: Backflow Tester Company List, City of Houston.
Approved list: City of Plano registered backflow testers, City of Plano Utility Operations.
Approved list: City of Grand Prairie registered backflow testers, City of Grand Prairie.
Approved list: City of Garland registered backflow testers, City of Garland.
Approved list: Town of Prosper registered backflow testers, Town of Prosper.
Approved list: City of Round Rock registered backflow testers, City of Round Rock Utilities and Environmental Services.
Approved list: McAllen Public Utility certified backflow testers, McAllen Public Utility.
Approved list: City of Saginaw backflow tester list, City of Saginaw Environmental Services.
Approved list: City of League City backflow assembly testers, City of League City.
Approved list: Brownsville PUB cross connection control and backflow prevention testers, Brownsville Public Utilities Board.
Approved list: City of Laredo local registered backflow prevention assembly testers, City of Laredo Utilities.
Approved list: City of Plano registered backflow testers who test without a water shutoff, City of Plano Utility Operations.
Related site: Testing a fire line? The sprinkler system behind it needs its own inspections by a state-licensed fire protection company. Licensed fire sprinkler inspectors near San Antonio on FireInspectorNear, our sister directory.
Keep looking
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