Are Drugs Legal in Washington? Cannabis, Possession, Federal Law

Are drugs legal in Washington? Cannabis is, for adults 21 and older who buy it from a licensed retailer and use it in private. Everything else on the controlled substances list — heroin, methamphetamine, cocaine, MDMA, psilocybin, and prescription drugs without a prescription — is still illegal, though simple possession is now a gross misdemeanor rather than a felony. Selling or making those drugs remains a serious felony. And federal law adds its own restrictions that state legalization does not erase.

Simple Possession of Non-Cannabis Drugs

Since July 1, 2023, knowingly possessing a controlled substance without a valid prescription, or knowingly using one in public, is a gross misdemeanor in Washington under Second Engrossed Second Substitute Senate Bill 5536.¹ The word “knowingly” matters. Prosecutors have to prove you were aware you had the substance, a change from the pre-2021 law that allowed convictions based on possession alone.

Penalties scale with your record:

No priors or one prior conviction: up to 180 days in jail, a fine up to $1,000, or both.
Two or more prior convictions after July 1, 2023: up to 364 days in jail, a fine up to $1,000, or both.¹

The statute pushes police and prosecutors toward treatment rather than jail. Officers are encouraged to refer people to assessment and treatment services, and prosecutors are encouraged to offer pretrial diversion when possession is the only charge.¹ A first arrest is more likely to lead to a treatment referral than a sentence, but the charge is real, and it stays on your record if you don’t complete diversion.

Cannabis for Adults 21 and Older

Recreational cannabis has been legal in Washington since voters approved Initiative 502 in 2012. Adults 21 and older can possess:²

Up to one ounce of usable flower
Up to 16 ounces of solid edibles
Up to 72 ounces of liquid products
Up to seven grams of concentrates

Cannabis must be purchased from a licensed retailer. Washington charges a 37 percent excise tax on every retail sale on top of regular sales tax, so shelf prices run well below what you actually pay at the register.³

Public consumption is prohibited — smoking, vaping, and edibles alike. Parks, sidewalks, restaurants, concerts, and all federal land are off-limits, and violating the public use ban is a civil infraction with a fine.²

Home cultivation is where Washington is stricter than many legalization states. Growing cannabis without a license is a class C felony carrying up to five years in prison, a $10,000 fine, and a mandatory additional fine of $1,000 for a first offense and $2,000 for a second. The only carve-out is for authorized medical patients.

Medical Cannabis

Patients with qualifying conditions who are entered in the state’s medical marijuana authorization database and hold a recognition card can possess considerably more:⁴

Up to three ounces of usable flower
Up to 48 ounces of solid products
Up to 216 ounces of liquid products
Up to 21 grams of concentrates
Up to six plants for personal medical use, with a possible increase to 15 if a healthcare provider determines the standard amount is insufficient

Authorization must come from a licensed healthcare provider for a recognized qualifying condition. Patients who have an authorization but are not entered in the database still have an affirmative defense to prosecution, but they do not get the higher possession limits or the right to cultivate.

Selling, Manufacturing, and Drug-Free Zones

Manufacturing, delivering, or possessing a controlled substance with intent to distribute is still a felony, and the reduction in simple possession penalties does not touch it.⁵ Penalties vary by schedule:

Schedule I or II narcotics such as heroin, or methamphetamine: class B felony, up to 10 years in prison and a fine up to $25,000.
Other Schedule I, II, or III substances: class C felony, up to five years in prison and a fine up to $10,000.
Schedule IV or V substances: class C felony, same maximums.

Penalties can double when the offense happens in or near a protected location, including schools, school bus route stops (within 1,000 feet), public parks, public housing projects designated as drug-free zones, and public transit vehicles or shelters.⁶ Both the maximum fine and the maximum sentence can be doubled, and the enhancement applies only to adults.

Paraphernalia and Fentanyl Test Strips

Cannabis-related items purchased from a licensed retailer are legal. Using paraphernalia with any other controlled substance is a misdemeanor, and selling or delivering paraphernalia carries a heavier penalty. Delivering paraphernalia to someone under 18 who is at least three years younger than the person providing it is a gross misdemeanor.⁷

Fentanyl testing strips are a specific exception. They are explicitly excluded from the state’s definition of drug paraphernalia and can be legally possessed, distributed, and used.⁸

Driving Under the Influence

Washington treats drugged driving the same as drunk driving. You can be charged with DUI for driving under the influence of any drug, cannabis included, even though cannabis is legal to possess.⁹

Washington sets a per se limit for THC: 5 nanograms or more of active THC per milliliter of blood makes you legally impaired regardless of how you feel or how well you drove. Charges are also possible below that threshold if an officer observes impairment. Regular cannabis users get caught by this rule because THC can linger in blood well past the psychoactive effects.

A first-offense DUI brings mandatory minimums: jail time (typically at least 24 hours), a fine, a license suspension of at least 90 days, and installation of an ignition interlock device. Refusing a blood draw after a lawful arrest triggers an automatic administrative license suspension under Washington’s implied consent law, separate from any criminal case.

Calling for Help During an Overdose

Washington’s overdose Good Samaritan law protects the caller and the person overdosing from drug possession charges based on evidence discovered because someone sought medical help.¹⁰

The immunity is limited to possession charges. It does not shield anyone from prosecution for manufacturing, delivery, or other non-possession offenses, and evidence found during an overdose response can still be used in those cases.¹⁰ The point of the law is that people should call 911 without weighing possession risk. If someone near you is overdosing, call.

Where Federal Law Still Applies

Cannabis remains a Schedule I controlled substance under federal law. A December 2025 executive order directed a rescheduling process, but as of early 2026 that process is not complete and federal enforcement rules have not changed.¹¹ Several federal rules cut against Washington’s cannabis laws in ways people routinely miss.

Firearms

Federal law makes it a felony for any user of a controlled substance to possess a firearm. Because cannabis is still federally controlled, anyone in Washington who uses it recreationally or medically is technically prohibited from owning or buying a gun under federal law.¹² ATF Form 4473, which every buyer completes at a licensed dealer, warns that marijuana use remains unlawful federally regardless of state legalization. Answering untruthfully on that form is itself a federal crime.

Federal Land

National parks, national forests, military bases, and other federal property are governed by federal law. Possessing any amount of cannabis on federal land can result in a mandatory court appearance, up to one year in prison, and a minimum $1,000 fine for a first offense.¹³ Washington has millions of acres of federal land, including Mount Rainier and Olympic National Park.

Federally Assisted Housing

Residents of federally subsidized housing face a similar conflict. Federal policy requires property owners to deny admission to applicants using a federally controlled substance and allows eviction of current tenants for cannabis use. Property owners cannot adopt policies that affirmatively permit cannabis, regardless of Washington law.¹⁴ Enforcement varies by property, but the legal risk is real.

Transportation and Air Travel

Any worker in a safety-sensitive transportation role regulated by the Department of Transportation, including commercial truck drivers, pipeline workers, and transit operators, is subject to federal drug testing that includes cannabis. A positive test means removal from duty, no matter what Washington law says.¹¹

TSA screening looks for security threats, not drugs, and officers do not actively search for cannabis. If cannabis turns up during screening, TSA refers the matter to law enforcement.¹⁵ Carrying cannabis across state lines is a federal offense even when both states allow it.

Workplace Protection for Off-Duty Cannabis Use

Under RCW 49.44.240, Washington employers generally cannot reject job applicants solely because they use cannabis off-duty or because a pre-employment drug test detects nonpsychoactive cannabis metabolites. Standard urine tests pick up metabolites that can linger for weeks and say nothing about current impairment, which is why the law targets that specific screening.

The exceptions are substantial. The protection does not apply to:

Law enforcement and fire protection positions
Corrections workers
Aerospace and airline jobs
Positions the employer identifies as safety-sensitive where impairment poses a substantial risk of death
Jobs requiring federal background checks or security clearances
Any position where federal law requires drug testing

The law also covers only off-duty use and pre-employment screening. Employers can still fire workers who are impaired on the job, and medical cannabis authorization does not create a right to use at work or to be excused from workplace drug policies.

Hemp-Derived Delta-8 and Psilocybin

Since the 2018 federal Farm Bill, cannabis-derived products containing less than 0.3 percent delta-9 THC on a dry weight basis have been treated as legal hemp, which opened the market for delta-8 THC and other hemp-derived cannabinoids sold outside the licensed cannabis system. Federal legislation set to take effect in November 2026 redefines legal hemp using a “total THC” measurement that includes delta-8 and other isomers, caps legal hemp products at 0.4 milligrams of total THC per container, and bans products containing synthesized cannabinoids or cannabinoids marketed directly to consumers. If you buy delta-8 or similar products, the rules are changing this year.

Psilocybin mushrooms remain a Schedule I controlled substance, and possession is treated like any other illegal drug under the gross misdemeanor framework. A bill advancing through the legislature would create a medically supervised therapeutic psilocybin program with an effective date of July 1, 2028, but as of early 2026 the bill had not been signed into law. For now, psilocybin possession and use remain illegal in Washington.

1
Washington State Legislature. Second Engrossed Second Substitute Senate Bill 5536
2
Washington State Liquor and Cannabis Board. Using and Having Cannabis
3
Washington State Legislature. Senate Bill Report SB 5650
4
Washington State Legislature. Chapter 69.51A RCW – Medical Cannabis
5
Washington State Legislature. RCW 69.50.401 – Prohibited Acts A – Penalties
6
Washington State Legislature. RCW 69.50.435 – Violations Committed in or on Certain Public Places or Facilities
7
Washington State Legislature. RCW 69.50.412 – Prohibited Acts E – Penalties
8
Washington State Legislature. Senate Bill Report SB 5022
9
Washington State Legislature. RCW 46.61.502 – Driving Under the Influence
10
Washington State Legislature. RCW 69.50.315 – Medical Assistance – Drug-Related Overdose
11
U.S. Department of Transportation. DOT’s Notice on Testing for Marijuana
12
Office of the Law Revision Counsel. 18 U.S. Code 922 – Unlawful Acts
13
U.S. Department of Agriculture Forest Service. Cannabis Use on National Forest System Lands
14
U.S. Department of Housing and Urban Development. Use of Marijuana in Multifamily Assisted Properties
15
Transportation Security Administration. Medical Marijuana