Continuous Alcohol Monitoring in Denver DUI Cases

Continuous alcohol monitoring can play an important role in Denver DUI cases, particularly for repeat offenders and people placed on probation with a requirement that they remain alcohol-free. Unlike a breathalyzer that requires a person to actively provide a breath sample, continuous alcohol monitoring uses a wearable device that repeatedly checks for alcohol through the skin throughout the day. Denver uses this technology in both post-conviction impaired-driving cases and certain pretrial cases where the court has ordered monitored sobriety.

Denver’s continuous alcohol monitoring program is administered through the city’s Community Corrections/Home Confinement system and accepts referrals from Denver County Court Probation and Denver District Court Probation. The program can be used as a condition of probation, as part of electronic monitoring, or in conjunction with other court-ordered requirements. Colorado law also requires at least 90 days of continuous alcohol monitoring for many defendants placed on probation after a third or subsequent DUI/DWAI offense or a felony DUI, subject to limited statutory exceptions.

For someone charged with DUI in Denver, continuous alcohol monitoring can therefore arise before trial, at sentencing, or during probation. Understanding why it was ordered, how long it may remain in place, what counts as a violation, and how compliance may affect the case is important for avoiding additional consequences.

Denver DUI Continuous Alcohol Monitoring Lawyer

If you have been ordered to participate in continuous alcohol monitoring after a Denver DUI arrest or conviction, the monitoring requirement should be treated as an important part of your case. A confirmed alcohol event, an allegation of tampering, or failure to comply with the monitoring program may create problems with bond, probation, or sentencing.

Colorado DUI defense attorney Matthew Martin at The Law Office of Matthew Martin can review the court order, determine why alcohol monitoring was imposed, explain what conditions apply, and represent you if you are accused of violating monitored sobriety.

Call 303.725.0017 today to schedule a free consultation with The Law Office of Matthew Martin.

The Law Office of Matthew A. Martin, P.C. represents people charged with DUI throughout Denver and the surrounding metropolitan area, including Aurora, Lakewood, Westminster, Englewood, Thornton, Arvada, Boulder, Parker, and Castle Rock.

Overview of Continuous Alcohol Monitoring for DUI Cases in Denver, Colorado

How Continuous Alcohol Monitoring Works in Denver DUI Cases
When Is Continuous Alcohol Monitoring Required in a Denver DUI Case?
Continuous Alcohol Monitoring as Part of Denver DUI Probation
What Happens If Alcohol Is Detected or the Device Is Tampered With?
Continuous Alcohol Monitoring Versus Breath Tests, Ignition Interlock, and Home Confinement
Who Pays for Continuous Alcohol Monitoring?
Does Successful Continuous Alcohol Monitoring Help a Denver DUI Case?
Additional Resources

How Continuous Alcohol Monitoring Works in Denver DUI Cases

Continuous alcohol monitoring is different from ordinary breath testing. Instead of requiring a driver to blow into a breath-test instrument at specific times, the device is generally worn continuously and measures alcohol that passes through the skin.

Denver states that its current system measures transdermal alcohol concentration, commonly called TAC. The bracelet is worn against the skin and automatically collects samples throughout the day. Denver’s program states that participants are tested at least 24 times per day. If alcohol is detected, the device increases sampling to approximately every 20 minutes until alcohol is no longer detected.

This repeated testing can provide supervising authorities with a pattern showing whether the device detected alcohol, when the reading began, whether it increased or decreased over time, and when it returned to zero. This is different from a single breath or urine test that captures information from only one point in time.

The equipment also includes technology intended to detect tampering or attempts to interfere with the bracelet. As a result, a person can face a compliance issue not only for an alleged alcohol reading but also for conduct that the monitoring provider believes interfered with proper operation of the equipment.

Denver identifies continuous alcohol monitoring as one of several technologies used through its electronic-monitoring program. Other options include radio-frequency home monitoring, cellular equipment, and GPS where appropriate. A DUI defendant can therefore potentially be subject to alcohol monitoring by itself or together with restrictions on where the person is permitted to go.

Colorado’s statewide probation policy similarly defines Continuous Alcohol Monitoring, or CAM, as a device that automatically tests a probationer’s transdermal alcohol concentration at intermittent intervals regardless of the person’s location. The Colorado Judicial Branch recognizes CAM as a tool for monitoring abstinence, supporting behavior change, and responding to noncompliance with traditional alcohol testing.

The purpose is therefore broader than simply catching alcohol consumption. In a DUI probation case, continuous monitoring may be used to help enforce a no-alcohol condition while allowing the person to continue working, attending treatment, and living in the community rather than being continuously incarcerated.

When Is Continuous Alcohol Monitoring Required in a Denver DUI Case?

Continuous alcohol monitoring can arise at several different stages of a Denver DUI prosecution.

For some defendants, monitored sobriety begins while the criminal case is still pending. Denver’s current Pretrial Services participation agreement specifically allows a court to impose monitored sobriety as a release condition and directs participants not to consume alcohol or unlawfully use controlled substances. The agreement also permits courts to use electronic substance-abuse monitoring as one of the available bond conditions.

This can be particularly relevant in repeat-DUI cases. Denver’s bond schedule provides that a DUI or DWAI defendant with a prior DUI/DWAI does not receive the standard first-offense scheduled bond but instead has bond set by a judicial officer at the first appearance. The judge may impose additional supervision conditions based on the circumstances.

Continuous alcohol monitoring can also be imposed after conviction as a condition of probation. Denver County Court Probation supervises defendants sentenced to community supervision and uses individualized case plans, risk-and-needs assessments, treatment referrals, and technology as part of supervision.

Colorado law specifically addresses monitoring for repeat impaired-driving offenders. A court may require continuous alcohol monitoring for a person sentenced to probation following a second DUI, DUI per se, or DWAI offense. For a person sentenced to probation following a third or subsequent offense, the court generally must require at least 90 days of continuous alcohol monitoring.

The same mandatory 90-day minimum applies to many people placed on probation for felony DUI, DUI per se, or DWAI. Colorado’s 2022 legislation expressly expanded the monitoring requirement to third-and-subsequent and felony impaired-driving offenders.

There are limited exceptions. The court may decline to impose otherwise required monitoring if it finds on the record that monitoring would not be in the interests of justice, or when the person’s residence is in an area where a monitoring device cannot reasonably be obtained.

That means the basic structure is generally:

A first DUI does not automatically require continuous monitoring solely because it is a first offense, although a Denver judge can impose monitored sobriety depending on the case;
A second DUI/DWAI may result in continuous alcohol monitoring as a condition of probation;
A third or subsequent DUI/DWAI generally requires at least 90 days of continuous alcohol monitoring if probation is imposed, unless an exception applies; and
A felony DUI probation sentence generally carries the same minimum 90-day monitoring requirement, subject to the statutory exceptions.

Monitoring may last longer than 90 days when the sentencing court orders a longer period. Colorado Judicial Branch policy provides that when a court specifies a particular monitoring period, probation generally continues the device until that period expires unless the court extends it. When the order requires monitoring for the entire term of probation or for an indefinite period, probation generally cannot terminate it early without another court order.

Continuous Alcohol Monitoring as Part of Denver DUI Probation

In Denver, continuous alcohol monitoring often works together with probation and treatment rather than functioning as an isolated requirement.

Denver County Court Probation develops individualized case plans and can make referrals for alcohol or drug treatment, conduct home visits, monitor compliance, and supervise other conditions imposed at sentencing. A repeat DUI defendant may therefore be required to complete Level II alcohol treatment while simultaneously remaining alcohol-free and wearing a monitoring device.

Denver’s Community Corrections program specifically states that continuous alcohol monitoring is used in post-conviction cases involving driving while intoxicated and driving while under revocation or suspension. Referrals can come from Denver County Court Probation as well as Denver District Court Probation.

Monitoring can also be incorporated into Denver’s broader electronic-monitoring or home-confinement system. The city uses post-conviction electronic monitoring both as an alternative sentence to jail and as a condition of probation. Participants generally meet with a supervising officer weekly or every other week so that employment, treatment, community service, school, and other approved activities can be reviewed.

Continuous alcohol monitoring therefore does not necessarily mean a person must remain at home. The alcohol bracelet measures alcohol regardless of where the person is located. This differs from electronic home monitoring, which is designed primarily to track whether a person leaves or returns to a permitted location. Colorado Judicial Branch policy expressly distinguishes CAM from Electronic Home Monitoring and GPS.

For a person who is working or attending treatment, this can allow the court to closely monitor abstinence without requiring repeated trips to a testing facility every day.

Consistent compliance can also become significant from a sentencing or supervision perspective. A defendant who remains sober, attends treatment, follows probation instructions, and completes monitoring without violations can demonstrate ongoing compliance with the court’s rehabilitative requirements. That does not erase the DUI conviction or automatically shorten probation, but it may be relevant if the court or probation department later evaluates whether additional restrictions are necessary.

What Happens If Alcohol Is Detected or the Device Is Tampered With?

A continuous alcohol-monitoring violation can create serious consequences, but the exact result depends on whether the person is being monitored before trial, as part of probation, or under another court order.

If monitoring is a condition of bond, an alleged violation may be reported to Pretrial Services and potentially brought to the judge’s attention. Denver’s current bond form warns that failure to comply with release conditions can result in the court revoking the bond. The form specifically lists conditions such as no alcohol, random breath testing, substance-abuse monitoring, and electronic substance-abuse monitoring among available restrictions.

A judge responding to a pretrial violation could potentially modify the release conditions, increase the level of supervision, order additional testing, restrict alcohol use more aggressively, or revoke bond in a serious case.

If continuous alcohol monitoring is a condition of probation, an alleged violation can lead to a probation response or a formal probation-violation proceeding. The court may consider whether the violation involved actual alcohol consumption, tampering, missed appointments, failure to maintain the device, or another form of noncompliance.

Colorado’s probation policy describes electronic monitoring as both a compliance tool and an intermediate response to violations of supervision conditions. This means not every alert necessarily produces the same punishment. The response can depend on the seriousness of the incident, the participant’s history, the court order, and probation’s assessment.

Possible consequences can include increased testing, additional treatment, closer supervision, extension of monitoring where legally permitted, modification of probation conditions, sanctions, or a request that the court revoke probation.

A serious or repeated probation violation may expose the defendant to additional jail or another sentence permitted for the underlying DUI offense.

Tampering allegations should also be taken seriously. Denver’s alcohol-monitoring technology includes safeguards intended to detect attempts to interfere with the bracelet. A report suggesting that an object was placed between the bracelet and the skin, that the equipment was damaged, or that a participant deliberately prevented valid readings can therefore create a separate supervision problem even if there is no confirmed alcohol reading.

At the same time, an electronic alert does not necessarily answer every factual question. Device records, maintenance information, the participant’s behavior, environmental exposure, medical circumstances, and the provider’s interpretation of the data may all become relevant when a violation is disputed. A defense attorney can request and review the underlying evidence rather than assuming that a summary allegation is automatically correct.

Continuous Alcohol Monitoring Versus Breath Tests, Ignition Interlock, and Home Confinement

Continuous alcohol monitoring is sometimes confused with other DUI-related technologies, but each serves a different purpose.

An ignition interlock device is installed in a vehicle and requires the driver to provide breath samples before starting the vehicle and at intervals while driving. Its primary purpose is to prevent alcohol-impaired operation of the vehicle. Ignition interlock requirements are generally administered through the Colorado DMV.

Continuous alcohol monitoring is different because the device stays with the person and measures alcohol throughout the day, whether or not the individual is driving.

A remote breath test can also require periodic alcohol samples, but it only tests when the person is directed to blow into the device. Continuous monitoring instead takes repeated measurements automatically.

Home confinement or electronic home monitoring focuses primarily on location. Denver may use radio-frequency or GPS technology to determine whether someone is at home, work, treatment, or another permitted location. Continuous alcohol monitoring measures alcohol rather than location, although Denver can use multiple technologies together.

A person sentenced for DUI in Denver may therefore simultaneously have:

A Colorado DMV ignition-interlock restriction;
Denver probation;
Level II alcohol treatment;
Continuous alcohol monitoring; and
Electronic home monitoring or another sentencing condition.

Satisfying one requirement does not necessarily satisfy the others.

Who Pays for Continuous Alcohol Monitoring?

Costs can be an important concern because monitoring may last for weeks or months.

Colorado law specifically provides protection for probationers who cannot afford required continuous alcohol monitoring. When monitoring is required under the repeat-DUI provisions and the defendant is unable to pay, the judicial district’s probation department is responsible for the monitoring costs. The law also authorizes use of the offender services fund for those expenses.

Colorado Judicial Branch policy similarly requires probation to notify the probationer whether the person will be responsible for electronic-monitoring costs.

The amount a particular Denver participant must pay can depend on the monitoring program, type of device, court order, and financial circumstances. A defendant who cannot afford the required monitoring should raise that issue through counsel or probation rather than simply failing to obtain or maintain the device.

Does Successful Continuous Alcohol Monitoring Help a Denver DUI Case?

Successful monitoring can be useful evidence of compliance, particularly when a defendant remains alcohol-free for an extended period while also participating in treatment and following all other court orders.

Before sentencing, documented sobriety may sometimes support an argument that the defendant is taking rehabilitation seriously. After sentencing, consistent compliance can demonstrate that the person is successfully functioning in the community under supervision.

For defendants in treatment-oriented programs such as Denver Sobriety Court, monitored abstinence may also fit into the broader goal of demonstrating sustained recovery and reducing the risk of another impaired-driving offense.

However, successful monitoring does not automatically result in dismissal of a DUI, eliminate mandatory sentencing, shorten a license revocation, or erase the conviction. The legal effect depends on the terms of the defendant’s plea, probation order, treatment-court program, or other disposition.

The safest approach is to view continuous monitoring as one component of the overall DUI case rather than as a substitute for alcohol treatment, probation, community service, DMV compliance, or other obligations.

Additional Resources

Denver Department of Public Safety – Continuous Alcohol Monitoring – Denver’s Home Confinement and Electronic Monitoring page provides the most detailed local information about continuous alcohol monitoring. It explains that Denver uses transdermal monitoring for post-conviction impaired-driving cases, accepts referrals from Denver County Court and Denver District Court Probation, and uses a bracelet that tests alcohol concentration through the skin at least 24 times per day.

Denver County Court – Probation Division – Denver County Court Probation supervises defendants sentenced to community supervision and administers individualized case plans, assessments, treatment referrals, home visits, and other supervision requirements. This office may refer qualifying DUI probationers for alcohol monitoring.

Denver Pretrial Services – Denver Pretrial Services supervises defendants while their criminal cases are pending. Denver’s current participation agreement specifically recognizes monitored sobriety, prohibitions on alcohol use, substance-abuse monitoring, and electronic monitoring as possible court-ordered conditions of release.

Colorado General Assembly – Alcohol Monitoring for Impaired Driving Offenders – Senate Bill 22-055 expanded Colorado’s alcohol-monitoring requirements for repeat DUI offenders. The enacted law requires at least 90 days of continuous alcohol monitoring for many defendants placed on probation after a third or subsequent DUI/DWAI offense or felony DUI and provides financial protections for people unable to afford the monitoring.

Colorado Judicial Branch – Electronic Monitoring in Probation – Chief Justice Directive 23-05 establishes statewide probation policy for continuous alcohol monitoring, electronic home monitoring, and GPS. The current amended directive explains when CAM may be used, how it differs from other monitoring technologies, and how probation handles court-ordered monitoring periods.

Denver DUI Continuous Alcohol Monitoring Attorney

Continuous alcohol monitoring can substantially affect a Denver DUI case. A defendant may be required to wear a monitoring device while the case is pending, as a condition of probation, or as part of a repeat-offender sentence. For many third or subsequent DUI offenders—and for many people placed on probation for felony DUI—Colorado law generally requires at least 90 days of continuous alcohol monitoring, unless a statutory exception applies.

Although monitoring can allow a person to continue working, attending treatment, and living in the community, compliance is important. Confirmed alcohol readings, tampering allegations, or failure to follow monitoring requirements may lead to increased supervision, bond consequences, probation violations, or additional sentencing.

If you have been ordered to participate in continuous alcohol monitoring after a Denver DUI arrest, Colorado DUI defense attorney Matthew Martin at The Law Office of Matthew Martin can explain the requirement, help address disputed monitoring results, and represent you in any related bond, sentencing, or probation proceeding.

Call 303.725.0017 today to schedule a free consultation with The Law Office of Matthew Martin.