About Next Day Backflow Testing
North Texas's trusted backflow specialists since 2015.

Our story
Family-owned in North Texas. Trusted across the metroplex.
Next Day Backflow Testing (legally IDL Professional Backflow, Inc.) was founded in 2015 by Israel Lambert with a simple promise: show up fast, do it right, and handle the paperwork. Over a decade and tens of thousands of tests later, we're one of the largest backflow testing operations in North Texas.
We've grown by hiring great technicians and by providing the absolute best service. The reviews on our home page came from real DFW customers, and we're proud of every one. Today our eight state-licensed technicians, plus one in training, test backflow assemblies across the entire Dallas-Fort Worth Metroplex.
On the job
Real work across North Texas




Our values
How we work
- Show up when we say we will
- Treat every customer like a neighbor
- Keep pricing fair and transparent
- Stand behind every test and every repair
"Whatever you do, work at it with all your heart, as working for the Lord, not for human masters."
Credentials
Licensed, insured, and qualified
- Texas-licensed Backflow Prevention Assembly Testers (BPAT)
- Background-checked technicians
- Fully insured (general liability + auto)
- TCEQ-compliant testing equipment, calibrated annually
- 8 state-licensed technicians serving all of DFW
Don't wait for compliance deadlines.
Schedule your test today — or call us right now.
