Lewisville
Backflow Testing
& Compliance
Stay compliant with the City of Lewisville's Cross-Connection Control Program. TCEQ-licensed testers registered with Lewisville — annual testing, repairs, and BSI Online report submission within 10 days.
Lewisville Backflow Testing: Quick Facts
Key Requirements for the City of Lewisville
- Annual testing is required for most backflow prevention assemblies (City of Lewisville Code Sec. 16-355).
- Completed test reports must be submitted through BSI Online — not Envirotrax or any other system.
- Reports are due within 10 days of the test date.
- The City of Lewisville charges a $25 filing fee per test submission.
- Testing must be performed by a TCEQ-licensed tester who is registered with the City of Lewisville.
- Same-day testing may be available — call or text 214-519-4410.
Why the City of Lewisville Requires Annual Backflow Testing
Lewisville treats and delivers drinking water to homes and businesses across the city, and protecting that supply from contamination is the goal of its Cross-Connection Control Program. Backflow prevention keeps non-potable water — from irrigation lines, boilers, chemical systems, and similar sources — from reversing direction and entering the public water system.
Backflow happens in two ways. Backsiphonage occurs when pressure in the public main drops, such as during a water main break or peak demand, and water is pulled backward. Back pressure occurs when a connected system like a pump or boiler pushes water back toward the main. Either can pull contaminants into the drinking water supply.
Under Lewisville's ordinance (Chapter 16, Article VII, Sec. 16-351), the city's program is designed to isolate potential contaminants within a customer's system, eliminate cross connections, and maintain a continuing program of cross-connection control. Where the Director of Public Services determines a backflow assembly is required (Sec. 16-353), the property owner must install it at their own expense and keep it tested and maintained.
Every required assembly must be:
- Tested when first installed
- Tested after any repair
- Tested after relocation
- Tested at least once per year thereafter
Because these assemblies contain moving mechanical parts, annual testing verifies they still protect the public water supply. For more background on how Texas regulates this, see our TCEQ Backflow Requirements page.
Annual Backflow Testing in Lewisville
If you've received a notice from the City of Lewisville or from BSI Online, it's time to schedule your annual test. We perform the test and file your completed report directly into BSI Online within the city's 10-day window, so you don't have to manage the paperwork or the deadline.
Annual Certified Testing
Stay ahead of Lewisville's annual deadline. We test your assembly, certify it, and submit the report to BSI Online so you never receive a violation notice. Residential and commercial properties welcome.
RPZ & DCVA Testing
RPZ (Reduced Pressure Zone) and Double Check Valve Assembly testing with calibrated, current equipment. We handle the specialty assemblies required for commercial and high-hazard connections.
Repairs & Replacement
Failed your test? We diagnose the problem, provide upfront pricing, and repair or replace the assembly on-site whenever possible. Once repaired, we retest and file the passing report with BSI Online.
Irrigation Backflow Testing
Landscape irrigation systems connected to city water generally require annual testing. We test irrigation backflow assemblies and submit your report through BSI Online.
Fire Line Testing
Fire sprinkler systems require specialized backflow testing and a tester holding a Texas Fire Sprinkler Certificate of Registration. We cover fire line backflow assemblies including DCDAs.
BSI Online Submission
Lewisville requires electronic report submission through BSI Online. We file your completed test report directly into the system within the city's 10-day window — no paperwork for you to track.
Backflow Compliance in Lewisville
Staying compliant in Lewisville means more than just having your device tested. The city requires that:
- Testing be performed by a TCEQ-licensed Backflow Prevention Assembly Tester (BPAT)
- The tester be registered with the City of Lewisville through the MyGovernmentOnline portal
- Reports be submitted electronically through BSI Online within 10 days of the test
- The $25 city filing fee be paid per submission
- Devices be repaired or replaced if they fail testing
Why Tester Credentials Matter
Reports are rejected if the tester isn't currently registered with Lewisville or has expired credentials — including an expired BPAT license, a missing Texas Fire Sprinkler Certificate of Registration (required for fire DCDAs), or an out-of-date gauge calibration report.
Our technicians keep their Lewisville registration and credentials current and submit your report correctly the first time.
What Happens If You Don't Stay Compliant?
Lewisville takes cross-connection control seriously, and the ordinance carries real consequences.
Under Sec. 16-357, a violation is a misdemeanor punishable by a fine of $100 to $1,000, with each day treated as a separate offense. The city can also recover any expense, loss, or damage caused by the violation, along with attorneys' fees and court costs.
Separately, the city can discontinue water service to a property if a required backflow assembly is not installed, tested, and maintained, or if a device has been removed, bypassed, or an unprotected cross connection is found.
Keeping your annual test current is far cheaper and simpler than dealing with fines or a service shutoff — and we send reminders before your next test is due so it never lapses.
RPZ Testing in Lewisville
Reduced Pressure Zone (RPZ) assemblies offer the highest level of protection against contamination. Because RPZ assemblies use relief valves and multiple check valves, the city requires annual testing to confirm they operate correctly.
Atlas Backflow Testing performs RPZ testing throughout Lewisville with calibrated equipment and a current gauge calibration report on file. We submit the completed test to BSI Online within the city's 10-day deadline.
RPZ Assemblies Are Commonly Required For:
- Commercial and industrial buildings
- Restaurants and food service facilities
- Medical facilities
- Manufacturing facilities
- Multi-tenant and multi-family properties
- High-hazard water connections
Who Needs Backflow Testing in Lewisville?
The City of Lewisville typically requires a backflow prevention assembly — and annual testing — when a property has any of the following.
What Happens If Your Backflow Device Fails?
If your assembly fails testing, we explain exactly why and walk you through the options. In many cases the assembly can be repaired on the spot. If replacement is the better long-term choice, we provide upfront pricing before any work begins.
Once repairs are complete, we retest the assembly and submit the passing report to BSI Online within the city's deadline. You receive confirmation and can stay ahead of any further notices.
Why Choose Atlas Backflow Testing?
Backflow prevention isn't a sideline for us — it's our specialty.
- TCEQ-licensed Backflow Prevention Assembly Testers
- Registered with the City of Lewisville
- Fast scheduling, same-day testing when available
- BSI Online submission within the 10-day window
- Repairs and replacements with upfront pricing
- Commercial and residential service
- Reminders before next year's test is due
What DFW Customers Say About Atlas
Property owners in Lewisville and across the wider DFW Metroplex trust Atlas for clear communication, on-time service, and getting them compliant without the headache.
"My husband and I used Atlas Backflow to help get our business CO with the city of Cedar Hill. We were having trouble locating the backflow device and Chaz came out to help locate it. Chaz was communicative, willing to help, and kind. Top notch service, highly recommended!"
"Super professional and very easy to work with!"
"Responsiveness, punctuality, professionalism — exactly what you want. Atlas delivered on all three."
Lewisville Backflow Compliance Checklist
Here's how the annual compliance cycle works for most Lewisville property owners.
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Receive your annual noticeFrom the City of Lewisville or from BSI Online indicating your assembly is due for testing.
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Schedule testing with a Lewisville-registered BPATCall or text Atlas Backflow Testing at 214-519-4410 — same-day testing may be available.
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Have the assembly testedOur licensed, Lewisville-registered tester inspects and tests your backflow prevention assembly with calibrated equipment.
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Repair or replace if it failsWe explain the issue, provide upfront pricing, and complete repairs on-site whenever possible, then retest.
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Report submitted to BSI OnlineWe file your completed test report electronically through BSI Online within 10 days, with the $25 city filing fee paid per submission.
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Stay protected until next yearWe'll send you a reminder before your next annual test is due so compliance never lapses.
Frequently Asked Questions
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How often is backflow testing required in Lewisville?
Most assemblies must be tested at least once per year (Code of Ordinances Sec. 16-355). New, repaired, or relocated assemblies must also be tested before being placed back into service.
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How are backflow reports submitted in Lewisville?
Lewisville uses BSI Online (Backflow Solutions, Inc.) to administer its Cross-Connection Control Program. Completed reports must be submitted electronically through BSI Online within 10 days of the test date.
Note: this is different from Fort Worth, which uses VEPO Envirotrax. If your tester submits to the wrong system, your report will not be accepted.
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Is there a fee to submit a backflow test in Lewisville?
Yes. The City of Lewisville charges a $25 filing fee per test submission through BSI Online.
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What if my backflow assembly fails testing?
Most failed assemblies can be repaired. We explain the failure, provide upfront pricing, and complete repairs on-site whenever possible. After repairs, we retest the assembly and submit the passing report to BSI Online before the 10-day deadline.
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What happens if I don't get my assembly tested?
Under Sec. 16-357, violations are a misdemeanor with fines of $100 to $1,000 per day, and the city can discontinue water service to the property until the requirement is met. The city can also recover attorneys' fees and court costs.
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Do I need an RPZ or a Double Check Assembly?
It depends on the hazard level and how the property is used. The Director of Public Services determines the required level of protection under the city's program. In general, higher-hazard connections (boilers, chemical feeds, certain commercial uses) require an RPZ, while lower-hazard connections may use a DCVA or PVB.
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Can Atlas submit my report to the City of Lewisville?
Yes. We file completed test reports electronically through BSI Online, the city's required reporting system, within the 10-day deadline. You don't need to manage the submission or track the paperwork.
Service Areas
Atlas Backflow Testing proudly serves Lewisville and the surrounding Denton County communities.
Don't see your city? We serve 50+ DFW-area municipalities. Call us to confirm coverage in your area.
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