In Connecticut, cocaine is commonly abused. Alongside cocaine, heroin is the biggest drug threat in Connecticut, . Heroin abuse continues to be widespread in Connecticut, , affecting suburban and urban areas. In Connecticut, , heroin demand is high and can be accessed easily. Heroin's popularity is partially because of the rising availability of low cost, high purity heroin, which can be effectively snorted or smoked instead of injected. On the street, heroin is sold in small glassine bags with some form of marking or brand name stated on the package.

Most of the Connecticut's commercial grade marijuana comes from Mexico or southwestern America. MDMA (ecstasy) is commonly available and abused in Connecticut, ; it is a popular drug choice among college age individuals. Current investigations show that the diversion of Vicodin and oxycodone products (OxyContin) remains an issue in Connecticut, .

Connecticut, is located near New York City, and is also a key transit and destination drug area. In 2006, the DEA and state and local authorities reported 3 meth lab incidents in Connecticut, . Further, as part of the DEA's Domestic Cannabis Eradication/Suppression Program, there were 1,543 cultivated marijuana plants that were seized and eradicated. In Connecticut, , there were 4 drug courts that had been operating for more at least two years as of April 16, 2007. At that time, there were no more drug courts in existence or being implemented in Connecticut, .

In 2006, 51.1 percent of California defendants who were Federally-sentenced had committed a drug offense; 54 percent of these cases involved crack cocaine. On January 1, 2008, there were 19,438 incarcerated individuals in Connecticut, . Almost 1,800 of the inmates committed a violation, which involved selling a hallucinogenic or narcotic substance.

On January 1, 2008, the amount of Connecticut, offenders being supervised in the community was 3,938. The Department of Corrections' Objective Classification System states that more than 88 percent of the inmates coming into the system have a history of substance abuse; this indicates a great need for some kind of substance abuse treatment. The El Paso Intelligence Center states that there were no injured or affected children relating to meth labs in Connecticut, during 2007. In 2006, there were 46,491 treatment admissions for drug or alcohol in ConnConnecticut, ecticut. Those needing drug treatment are urged to treatment at one of these facilities.