Denton County consistently ranks among the top counties in Texas for DWI arrests—and enforcement is aggressive across Denton, Lewisville, Flower Mound, and surrounding areas.
If you’ve been arrested for DWI, you’re already dealing with serious consequences. But an arrest is not the same as a conviction. Many DWI cases can be challenged—especially when there are issues with the traffic stop, breath testing, or how the investigation was handled.
At the Law Offices of Richard C. McConathy, we’ve handled over 1,000 criminal cases across North Texas, including hundreds of DWI charges. We know how Denton County courts approach these cases—and what it takes to fight back.
If you’re facing charges, working with an experienced Denton County DWI lawyer can make a critical difference in how your case is handled.
Why Denton County Has High DWI Arrest Rates
The Enforcement Reality
Denton County law enforcement agencies—including the Denton Police Department, Lewisville Police Department, and Flower Mound Police Department—conduct high-volume traffic enforcement, particularly on weekends and late nights.
The Texas Highway Patrol also patrols Interstate 35 through Denton County, where DWI checkpoints and saturation patrols are common during holiday periods.
Population growth fuels arrest numbers. Denton County is one of Texas’s fastest-growing regions, with over 900,000 residents. More drivers on roads mean more traffic stops, and more traffic stops create more DWI investigation opportunities.
Aggressive DWI Prosecution in Denton County Courts
The Denton County District Attorney’s Office handles felony DWI cases with serious intent. Prosecutors pursue enhanced charges when drivers have prior convictions, high blood alcohol concentrations (BAC), or circumstances involving accidents or injuries. Even first-time DWI cases are prosecuted aggressively, with prosecutors pushing for jail time and significant fines.
Our attorneys know the tendencies of Denton County judges and prosecutors. We’ve appeared before these same judges and prosecutors dozens of times, and we understand their prosecution patterns. This local knowledge is invaluable when negotiating favorable outcomes for our clients.
What Happens When You’re Arrested for DWI in Denton County
The Arrest Process
A DWI arrest typically begins with a traffic stop. An officer observes your vehicle and believes they have reasonable suspicion to stop you—perhaps weaving between lanes, running a red light, or a brake light malfunction. During the stop, the officer watches for signs of impairment: slurred speech, odor of alcohol, fumbling with documents, or poor performance on roadside sobriety tests.
If the officer suspects impairment, they’ll ask you to perform field sobriety tests. These tests—the horizontal gaze nystagmus (HGN), the walk-and-turn, and the one-leg stand—are subjective and often unreliable, especially outdoors in poor lighting, on uneven surfaces, or when you have medical conditions affecting balance.
The Breathalyzer and Blood Tests
After failing (or refusing to take) field sobriety tests, you’ll likely be arrested and taken to a police station or hospital for a breath or blood test. Texas Penal Code §49.04 defines DWI as operating a motor vehicle with a blood alcohol concentration (BAC) of .08 or higher, or with any detectable amount of a controlled substance in your system.
The breath test machine—usually an Intoxilyzer 9000—must be properly calibrated and maintained according to strict Texas standards. Many breath tests fail to meet these standards, making the results unreliable or inadmissible in court. Blood tests, while generally more accurate, can be contaminated, improperly stored, or mishandled during collection and analysis.
Our attorneys know the technical defects in testing equipment and procedures. We work with toxicology experts to challenge breath and blood test results on scientific grounds.
DWI Penalties in Denton County: Understanding Your Exposure
First-Offense DWI (Texas Penal Code §49.04)
A first-time DWI conviction in Texas carries the following penalties:
- Up to $2,000 in fines
- Up to 180 days in county jail
- License suspension of 90 days to 1 year (plus additional DPS surcharges of up to $2,000 per year for 3 years)
- DUI education program requirement
- Community service (possible)
Your driver’s license is suspended immediately upon arrest, even before trial. Texas DPS can impose a separate civil license suspension that’s independent of any criminal conviction.
Aggravating Factors That Increase Penalties
Several factors can elevate your case from a misdemeanor to a felony, or increase jail and fine exposure:
- High BAC. If your BAC was .15 or higher, you face enhanced penalties under Texas Penal Code §49.04(d)—a Class A misdemeanor with up to 1 year in jail and $4,000 in fines (we’ll discuss this in detail in a separate article).
- Prior DWI convictions. A second DWI within 10 years is a Class B misdemeanor (up to 6 months jail, $2,000 fine). A third DWI within 10 years is a felony (2-10 years in prison, up to $10,000 fine).
- Accident or injury. DWI causing injury is a felony under Texas Penal Code §49.07. If your impaired driving caused someone else injury, you face 2-10 years in prison.
- Child passenger. DWI with a child passenger under 15 is a felony under Texas Penal Code §49.045, with 2-10 years in prison.
Immediate Steps to Take After a Denton County DWI Arrest
Don’t Delay—Act Quickly
You have limited time to protect your rights and your driver’s license. Texas DPS gives you only 15 days from arrest to request a hearing to challenge your license suspension. If you miss this deadline, your suspension becomes automatic.
Contact our firm immediately. We’ll file the Administrative License Revocation (ALR) hearing request before your deadline expires. This hearing is separate from your criminal case and gives us an opportunity to challenge the traffic stop, the arrest, and the breath or blood test.
Gather Evidence While It’s Fresh
After your arrest, memory of the traffic stop, the sobriety tests, and the arrest environment fades quickly. Immediately write down details you remember:
- Where you were pulled over (street, lighting, road conditions)
- Why the officer said they stopped you
- What the officer said and did during the stop
- How you performed on sobriety tests and whether conditions were fair
- Time of arrest, officers’ names, and any statements made to you
Request dash camera and body camera footage from the arresting agency. This video evidence often reveals police errors in administering sobriety tests or violations of proper DWI investigation procedures.
Common DWI Defense Strategies in Denton County
Challenging the Traffic Stop
The foundation of every DWI case is the traffic stop. If the officer lacked reasonable suspicion to stop your vehicle, any evidence obtained after the stop—including breath and blood test results—can be suppressed and excluded from trial.
Officers must observe specific traffic violations or signs of impairment to justify a stop. Weaving slightly within a lane, equipment violations, or vague suspicions are often insufficient. Our attorneys file motions to suppress evidence when stops are unconstitutional, significantly weakening or eliminating the prosecution’s case.
Attacking the Sobriety Tests
Field sobriety tests are highly subjective. They rely on officer judgment and can be influenced by your nervousness, medical conditions, medications, fatigue, or even your shoes and clothing. Police often administer these tests incorrectly, failing to follow National Highway Traffic Safety Administration (NHTSA) standards.
We challenge how tests were performed and introduce expert testimony about the limitations and unreliability of these tests, especially in poor environmental conditions.
Exposing Breath Test Defects
Intoxilyzer machines must be properly maintained, calibrated, and operated according to Texas standards. Many breath tests are unreliable because:
- The machine wasn’t properly calibrated
- The officer didn’t observe the required 15-minute mouth-alcohol deprivation period before testing
- The officer used improper testing procedures
- Environmental factors affected the machine’s accuracy
We demand discovery of the machine’s maintenance records, calibration logs, and the operator’s training credentials. Technical defects often lead to test suppression or exclusion.
Questioning Blood Test Accuracy
Blood tests can be contaminated during collection or analysis. The blood sample must be properly preserved with an anticoagulant and stored in cool, dark conditions. Improper handling can lead to fermentation, affecting BAC results.
Our toxicology experts review the entire chain of custody for blood samples and identify contamination, improper storage, or testing errors that undermine the prosecution’s evidence.
Medical and Physiological Defenses
Some people produce elevated BAC readings or show signs of impairment due to medical conditions unrelated to alcohol. Diabetes, acid reflux, and other medical conditions can produce false breath test results. Fatigue, medication, or medical issues can mimic impairment signs.
We investigate your medical history to identify physiological explanations for test results or sobriety test performance, providing expert testimony to challenge the prosecution’s case.
What to Expect During Your Denton County DWI Case
The Administrative License Revocation (ALR) Hearing
This hearing occurs separate from your criminal case. You’ll testify about the traffic stop and breath/blood test procedures. The state must prove reasonable suspicion for the stop and compliance with proper testing procedures. If we prevail at the ALR hearing, your license suspension is rescinded, though you’ll still face criminal charges.
Even if we lose the ALR hearing, the evidence we gather and testimony we present provides valuable ammunition for the criminal trial.
Arraignment and Plea Options
At your first appearance in Denton County District Court, you’ll be informed of the charges and your rights. The prosecutor will likely offer a plea deal early in the case.
Don’t accept the first offer. Our attorneys negotiate aggressively, often securing reduced charges, deferred adjudication, or even dismissals based on evidence weaknesses.
Pre-Trial Discovery and Motions
We request all prosecution evidence: police reports, video footage, breath/blood test records, officer training records, and any exculpatory evidence. We file motions to suppress evidence obtained through improper procedures and motions to exclude unreliable test results.
Many DWI cases are won at the pre-trial motion stage, before trial ever begins. In some cases, you may also be eligible for DWI record expungement, depending on how your case is resolved. Suppression of the breath or blood test, for example, often leaves the prosecution with insufficient evidence to proceed.
Trial or Favorable Plea Agreement
If negotiations don’t produce a favorable outcome, we’re prepared to take your case to trial. Our attorneys have tried DWI cases before Denton County juries and know how to effectively cross-examine prosecution witnesses, present expert testimony, and argue reasonable doubt.
Often, the strength of our defense at the pre-trial stage motivates prosecutors to offer significantly better plea deals rather than risk trial.
Avoiding Common Mistakes in Your Denton County DWI Case
Mistake #1: Pleading Guilty Without Fighting
Many people assume DWI arrests always lead to conviction. This is false. We’ve secured dismissals, acquittals, and favorable plea agreements for countless clients. Never plead guilty without first consulting with our attorneys about the strength of the prosecution’s evidence.
Mistake #2: Delaying Legal Help
The 15-day ALR deadline and the early stages of the criminal investigation are critical. Waiting weeks or months to hire an attorney means lost opportunities to preserve evidence, challenge the traffic stop, and gather witness testimony. Contact us immediately after arrest.
Mistake #3: Talking to Police Without an Attorney
After your arrest, you have the right to remain silent and the right to an attorney. Use both. Never discuss the arrest, where you’d been, how much you’d drank, or anything about your driving without our attorney present. Anything you say can be used against you.
Mistake #4: Driving on a Suspended License
Following a DWI arrest, your license is suspended. Driving on a suspended license results in additional criminal charges and penalties. Arrange alternative transportation or request a hardship license through Texas DPS.
Mistake #5: Missing Court Dates
Missing a court appearance in Denton County results in an arrest warrant, bail forfeiture, and additional charges. Mark all court dates on your calendar and confirm with our office before each appearance.
Why Choose Our Firm for Your Denton County DWI Defense
Our firm has 35+ years of criminal defense experience serving Denton County and 15 other DFW counties. We’ve handled over 1,000 criminal cases, including hundreds of DWI charges in Denton County courts.
Our founder and lead attorney, Richard C. McConathy, is known throughout the DFW legal community for aggressive, strategic DWI defense.
We understand Denton County courts and prosecutors intimately. We’ve appeared before virtually every judge and prosecutor handling DWI cases in the county. This local knowledge translates to better negotiation outcomes and more effective trial strategies.
We invest in expert witnesses and technical analysis. We don’t accept prosecution evidence at face value. We retain toxicology experts, breath test equipment specialists, and other experts who challenge the science behind alcohol testing and expose errors in police procedures.
We’re available when you need us. We understand that DWI arrests are stressful and urgent. Our office hours accommodate working people, and we respond quickly to client calls and messages.
If you’ve been arrested for DWI in Denton County, contact our firm today for a confidential consultation.
Call 972-528-0116 to speak with an experienced DWI defense attorney. Your case may be stronger than you think, and we’re ready to fight for your rights.