
In Wisconsin, the drug threat depends on the region. Of concern in the eastern and central parts of Wisconsin are the accessibility, abuse, and distribution of powder and crack cocaine. There is rising accessibility of high purity heroin, plus in the amount of new consumers, especially in the Milwaukee region. Marijuana continues to be the most easily accessible and most frequently abused drug throughout the state of Wisconsin.
Although methamphetamine production and use are evident, it seems to be decreasing. The majority of meth encountered in Wisconsin is still in the western area, close to the border of Iowa and Minnesota. Three types of organizations control the majority of the shipment and bulk distribution of drugs in Wisconsin: Mexican drug smuggling organizations that ship cocaine, marijuana, and methamphetamine; Nigerian criminal groups that control the distribution of Southwest Asian heroin; and Dominican criminal groups that are responsible for distributing South American cocaine and heroin.
While powder and crack cocaine have been easily attainable in Wisconsin, in examining confidential source data, current investigative intelligence, and cost and purity information indicate that the region is undergoing an interference in its accessibility. Typically, cocaine is shipped into Wisconsin by Mexican drug smuggling organizations. These organizations ship bulk shipments of cocaine from the southwest border via Chicago or straight to Milwaukee, hidden in passenger vehicles and commercial transportation. Although cocaine costs cited in the first and second quarters of 2008 stayed quite consistent, specifically, ranging from $20,000 to $23,000 per kilogram, costs in the third and fourth quarters of 2008 have grown significantly, ranging from $28,000 to$30,000.

According to the Milwaukee County Medical Examiner's Office, heroin abuse has stayed stable in Wisconsin over the last few years. The majority of heroin use is concentrated in the Milwaukee and Racine regions. The Madison region area is citing a rise in heroin smuggling and abuse. Increasing levels of purity give consumers the alternative of snorting the drug instead of injecting it—an alternative that may be attractive to younger users. The average age of heroin users is declining. There has been a substantial rise in the amount of younger users from outside the City of Milwaukee going to Milwaukee to acquire their heroin and then going back to their community in order to utilize it. West African smugglers are the sources of Southwest Asian heroin accessible in Milwaukee, with South American heroin being distributed mainly by Dominican smugglers. The accessibility of brown heroin continues to be low, and black tar heroin is hardly encountered in Milwaukee.
Although methamphetamine abuse appeared to be growing from Minnesota and Iowa into rural counties in western Wisconsin, the production of meth in Wisconsin has decreased consistently. Some meth is imported into Wisconsin by Mexican sources deriving from the southwest border. DEA Milwaukee has not detected a substantial rise in distribution or consumption of meth. DEA Green Bay cites that there is small accessibility of meth in its region. DEA Madison cites that meth is easily accessible in ounce amounts in northwestern Wisconsin, supplied by Minneapolis sources.