What Is Backflow?
Backflow occurs when water flows in the opposite direction from its intended path through a plumbing system. Under normal conditions, water pressure keeps water moving from the public supply into your property. However, when pressure drops — due to a water main break, fire hydrant use, or heavy demand — contaminated water from irrigation systems, boilers, or chemical storage can be siphoned back into the clean water supply.
This is a serious public health concern. Backflow contamination has caused documented outbreaks of illness across the United States, which is why the Texas Commission on Environmental Quality (TCEQ) mandates backflow prevention and annual testing.
What Is a Backflow Preventer?
A backflow preventer is a mechanical device installed on your water line that acts as a one-way gate. It allows water to flow into your property but physically prevents it from flowing backward into the municipal supply. These devices are required on any connection that poses a potential contamination risk, including:
- Irrigation systems — Lawn sprinklers can introduce fertilizers, pesticides, and soil bacteria
- Fire suppression systems — Standing water in fire lines can become stagnant and contaminated
- Commercial kitchens — Grease traps and chemical cleaning agents pose cross-connection risks
- Medical and dental facilities — Specialized equipment creates potential hazardous cross-connections
- Swimming pools and spas — Chemically treated water must be isolated from the potable supply
Why Is Annual Backflow Testing Required?
The TCEQ requires that all backflow prevention assemblies be tested at least once per year by a TCEQ licensed backflow tester. This is not optional — it is a legal requirement under Texas Administrative Code Title 30, Chapter 290.
Annual backflow testing is required because:
- 1Mechanical wear — Internal springs, check valves, and seals degrade over time and can fail silently
- 2Debris accumulation — Sediment and mineral deposits can prevent valves from seating properly
- 3Pressure changes — Fluctuations in water pressure can stress components beyond their design limits
- 4Legal compliance — Property owners who fail to test face fines, water service disconnection, or both
What Happens During a Backflow Test?
A certified backflow tester uses specialized gauge equipment to verify that each check valve and relief valve in your backflow preventer is functioning within manufacturer specifications. The test typically takes 15 to 30 minutes per device and involves:
- 1Shutting off the downstream water supply briefly
- 2Attaching test gauges to the device's test ports
- 3Measuring differential pressure across each check valve
- 4Verifying the relief valve opens at the correct pressure differential
- 5Recording all readings on an official TCEQ test report
After testing, your TCEQ licensed backflow tester files the results electronically with your local water utility. If the device passes, you receive a certificate of compliance. If it fails, repairs must be made and the device retested before it can be certified.
Who Can Perform Backflow Testing in Texas?
Only individuals who hold a valid TCEQ Backflow Prevention Assembly Tester (BPAT) license can legally perform backflow testing in Texas. This license requires completing a 40-hour training course, passing a written and practical exam, and maintaining continuing education credits.
Atlas Backflow of Texas holds TCEQ License BP0012593 and has been providing certified backflow testing across the Dallas-Fort Worth metroplex since 2009. We test all types and sizes of backflow prevention assemblies for residential, commercial, and irrigation applications.
Schedule Your Annual Backflow Test
If your annual backflow test is due — or if you have received a notice from your water utility — contact Atlas Backflow of Texas today. We offer same day and next day testing throughout the DFW area, with digital reports filed directly to your water provider.
Call (817) 612-6088 or email [email protected] to schedule your test.
