Drug Possession Charges in Texas — Penalties by Charge Level and What Affects the Outcome

Drug possession charges in Texas are not a single offense with a single penalty range. The penalty for drug possession in Texas depends on two specific factors — what substance was possessed and how much of it was found. Those two factors together determine which penalty group applies under the Texas Controlled Substances Act and what weight range within that penalty group the charge falls into. The combination produces a charge level that can range from a Class B misdemeanor — with a maximum of 180 days in county jail — to a first-degree felony — with a maximum of life in the Texas Department of Criminal Justice.

Understanding how Texas classifies controlled substances, what penalty group applies to the most common substances, what charge levels correspond to specific weight ranges, and what factors beyond the substance and weight affect the outcome of a drug possession case gives anyone facing a possession charge in San Antonio the framework they need to understand what they are actually facing.

The Texas Controlled Substances Act — Penalty Groups

The Texas Health and Safety Code Chapter 481 — the Texas Controlled Substances Act — classifies controlled substances into penalty groups numbered 1 through 4, plus a separate category for marijuana. The penalty group determines the baseline severity of the offense for a given amount of substance, with Penalty Group 1 carrying the most serious penalties and higher penalty groups generally carrying less severe ones.

Penalty Group 1 — The Most Serious Controlled Substances

Penalty Group 1 includes the substances that carry the most severe possession penalties under Texas law. The drugs in Penalty Group 1 include cocaine, heroin, methamphetamine, oxycodone, hydrocodone (in concentrations above specific thresholds), fentanyl, GHB, and ketamine, among others. These are the substances most commonly involved in serious drug possession prosecutions in Bexar County.

The penalty structure for Penalty Group 1 possession is entirely weight-driven. The weight of the substance — measured in grams for most PG1 substances — determines the charge level as follows.

• Less than one gram. State jail felony. Punishable by 180 days to two years in a state jail facility and a fine of up to $10,000.
• One gram or more but less than four grams. Third-degree felony. Punishable by two to ten years in TDCJ and a fine of up to $10,000.
• Four grams or more but less than 200 grams. Second-degree felony. Punishable by two to twenty years in TDCJ and a fine of up to $10,000.
• 200 grams or more but less than 400 grams. First-degree felony. Punishable by five to ninety-nine years or life in TDCJ and a fine of up to $10,000.
• 400 grams or more. Enhanced first-degree felony. Punishable by ten to ninety-nine years or life in TDCJ and a fine of up to $100,000.

The weight thresholds apply to the total weight of the substance as seized — which includes any adulterants or dilutants mixed with the controlled substance. A small amount of pure methamphetamine mixed with a cutting agent can produce a total weight that triggers a higher charge level than the pure drug weight alone would indicate.

Penalty Group 1-A — LSD

Penalty Group 1-A applies specifically to lysergic acid diethylamide — LSD. Unlike most controlled substances, PG 1-A possession is measured by unit dose rather than weight, with charge levels running from state jail felony for fewer than 20 units through enhanced first-degree felony for 4,000 or more units.

Penalty Group 1-B — Fentanyl (Enhanced)

Texas created a separate Penalty Group 1-B in 2021 to address fentanyl specifically, reflecting the legislative response to the fentanyl crisis. Possession of fentanyl under PG 1-B carries enhanced penalties compared to PG 1 generally — possession of one gram or more is a second-degree felony rather than a third-degree, and the enhanced penalties scale upward from there. Manufacturing or delivery of fentanyl that causes death or serious bodily injury is punishable as a first-degree felony with a mandatory minimum sentence.

Penalty Group 2 — Hallucinogens and Others

Penalty Group 2 includes MDMA (ecstasy), PCP, amphetamine (in certain forms), synthetic cannabinoids, psilocybin mushrooms, and several other substances. The penalty structure follows a similar weight-based structure to PG 1 but is generally one level less severe at each weight threshold. Possession of less than one gram of a PG 2 substance is a state jail felony, with charge levels escalating to first-degree felony for 400 grams or more.

Penalty Group 3 — Prescription Medications and Others

Penalty Group 3 includes many prescription medications — benzodiazepines such as Xanax and Valium, anabolic steroids, testosterone, certain stimulants, and other substances. Possession of less than 28 grams of a PG 3 substance is a Class A misdemeanor — the only controlled substance possession charge that begins at the misdemeanor level outside of marijuana. Larger quantities escalate through the felony levels.

Penalty Group 4

Penalty Group 4 covers a narrower set of substances including compounds containing small amounts of opium or other narcotics that are below the thresholds for higher penalty groups. Possession of less than 28 grams is a Class B misdemeanor.

Marijuana — Separate Classification

Marijuana is classified separately from the penalty groups under Texas Health and Safety Code Section 481.121. Despite changes in marijuana law in other states, marijuana remains fully illegal in Texas — possession of any amount is a criminal offense. The penalties for marijuana possession in Texas are as follows.

• Two ounces or less. Class B misdemeanor. Up to 180 days in county jail and a fine of up to $2,000.
• More than two ounces but four ounces or less. Class A misdemeanor. Up to one year in county jail and a fine of up to $4,000.
• More than four ounces but five pounds or less. State jail felony. 180 days to two years in a state jail facility and a fine of up to $10,000.
• More than five pounds but 50 pounds or less. Third-degree felony.
• More than 50 pounds but 2,000 pounds or less. Second-degree felony.
• More than 2,000 pounds. First-degree felony.

The quantity thresholds for marijuana are measured by weight in pounds and ounces rather than grams, reflecting the separate statutory scheme. Marijuana-derived products — THC concentrate, edibles containing THC, and vaping cartridges containing THC — are classified not as marijuana but as Penalty Group 2 substances and are subject to the more severe PG 2 penalty structure. A THC vape cartridge containing less than one gram of concentrate is charged as a state jail felony rather than a Class B misdemeanor — a consequence that surprises many defendants who believe they are simply in possession of marijuana.

What Factors Beyond Substance and Weight Affect the Outcome

The charge level is established by the substance and the weight — but the outcome of the case is determined by multiple additional factors that defense counsel evaluates from the first day of representation.

The Legality of the Stop, Search, and Seizure

The single most powerful defense tool in drug possession cases is the Fourth Amendment challenge to how the drugs were found. Under Texas Code of Criminal Procedure Article 38.23 and the federal exclusionary rule, evidence obtained in an unlawful search or seizure cannot be used against the defendant at trial. If the drugs were found in a search that lacked legal justification — a traffic stop without reasonable suspicion, a search without a warrant or valid consent, a search that exceeded the scope of a warrant — a motion to suppress can eliminate the primary evidence in the case and produce a dismissal.

Drug possession cases are among the most fertile ground for suppression motions in Texas criminal defense. The most common constitutional challenges in Bexar County drug possession cases include unlawful traffic stops where the stated reason for the stop is contradicted by body camera footage, searches of vehicles based on claimed odor of marijuana that lack additional corroboration, searches of residences without warrants based on claimed exigent circumstances that do not meet the constitutional threshold, and searches incident to arrests where the arrest itself lacked probable cause.

An attorney who reviews the body camera footage, the written police report, and the search and seizure circumstances before any plea is entered is performing the foundational work of drug possession defense — and the result of that review frequently reveals arguments that produce significantly better outcomes than a plea to the original charge.

The Weight and Laboratory Analysis

In drug possession cases, the weight of the substance is a critical element of the offense that the state must prove beyond a reasonable doubt. The laboratory analysis that establishes both the identity of the substance and its weight is performed by a government laboratory — in Bexar County, typically the Texas Department of Public Safety Crime Lab or a regional laboratory.

Defense counsel should request and review the complete laboratory file — the analyst’s notes, the instrument maintenance records, the quality control documentation, and the specific methodology used — in every drug possession case. Errors in the laboratory analysis, deviations from accreditation standards, or chain of custody issues can challenge the weight determination in ways that move the charge to a lower level or that undermine the reliability of the identification entirely.

In cases where the substance weight is close to a threshold — a sample weighing 3.9 grams when the threshold for a higher charge is four grams — independent retesting by a defense expert can produce a weight determination that places the substance below the threshold, reducing the charge level and the potential sentence range.

Prior Criminal History

Prior drug convictions enhance penalties under Texas Health and Safety Code Section 481.134. A defendant with a prior felony drug conviction who is convicted of a new drug offense faces an enhanced sentence — state jail felonies are enhanced to third-degree felonies, and the higher felony levels are enhanced upward as well. Prior convictions also affect eligibility for deferred adjudication and the terms of any community supervision.

Eligibility for Deferred Adjudication and Diversion

For many first-offense drug possession defendants in Bexar County — particularly those with no prior criminal history — deferred adjudication community supervision is a realistic and frequently achieved outcome. Successful completion of deferred adjudication results in a dismissal without a conviction, and after a five-year waiting period for felony charges, the defendant may be eligible for an order of nondisclosure sealing the record.

Bexar County also has a Drug Court program for qualifying defendants — a structured treatment and supervision program that combines accountability with access to treatment services. Successful completion of the Drug Court program can result in dismissal of the original charge. Eligibility and acceptance into Drug Court depends on the charge level, the defendant’s history, and the specific circumstances of the offense.

The defense attorney’s knowledge of which Bexar County prosecutors and judges are receptive to diversion, deferred adjudication, and Drug Court for specific charge levels and defendant profiles is practical local knowledge that affects outcomes in ways that cannot be learned from the statute alone.

What to Do If You Are Facing a Drug Possession Charge in San Antonio

The most time-sensitive actions after a drug possession arrest are requesting the ALR hearing if a DWI was also involved, preserving evidence of the stop and search circumstances before memories fade and footage is overwritten, and retaining an attorney who will immediately evaluate the suppression arguments and the charge level before any plea is entered or any statement is made to law enforcement.

A drug possession charge in Texas carries consequences — a permanent record if convicted, potential felony status with all the attendant collateral consequences, and the professional and personal impacts that follow a drug conviction. Every one of those consequences is avoidable if the right defense steps are taken from the outset.

If you have been charged with drug possession in San Antonio or Bexar County, call Barton & Associates at 210-500-0000. Consultations are free, confidential, and available 24 hours a day with a criminal defense attorney.