Australian spent $9.3 billion on illicit drugs last year, with cocaine and meth use rising from previews years.
Analysis of wastewater shows how much of each of the drugs is being consumed around the country, underlining the size of the black market.
NSW, for example, is the biggest user of cocaine, and meth use has increased around the country.The Australian Criminal Intelligence Commission today released its sixth National Wastewater Drug Monitoring Program report, which monitored 58 wastewater stations in July and August 2018.
It estimates more than 9.6 tonnes of methylamphetamine was consumed in Australia in the year to August 2018, along with four tonnes of cocaine, 1.1 tonnes of MDMA, and more than 700 kilograms of heroin.
It is astounding that Australians waste over $9.3 billion a year on drugs commission chief executive Michael Phelan said.
This is money people could be spending on legitimate goods for themselves and their families.
The report also looked at cannabis consumption, which regional Australia uses at double the rate of city dwellers.
In the second year of the testing program, the commission found cocaine and meth consumption were up, but MDMA and heroin were down.
Mr Phelan said a positive sign is the drop in fentanyl use across regional areas.
The report covers 56 per cent of the population, which equates to about 13 million people, and monitored 13 licit and illicit substances at 58 wastewater sites nationally.
It also provided a state-by-state breakdown of the statistics, which showed Tasmania had a high rate of drug use compared to the rest of the country.
Hobart was the capital city with the highest cannabis use, while Tasmania had the highest MDMA, oxycodone and fentanyl consumption in both capital city and regional sites.
New South Wales residents were the highest consumers of cocaine, while Melbourne was the capital city with the most heroin use.
Methylamphetamine use was up around the country, and by a notable amount in regional Queensland.
Opiod consumption was high in the Australian Capital Territory, while Western Australia had the highest average methylamphetamine use.
In the Northern Territory cannabis use in regional areas was higher than anywhere else, and Darwin had to highest MDMA consumption of any capital city.
DRUG CONSUMPTION BY STATE
AUSTRALIAN CAPITAL TERRITORY
NEW SOUTH WALES
4. Cocaine (highest average consumption)
5. Heroin (highest regional consumption)
2. MDMA (highest capital city consumption)
2. Oxycodone (highest average consumption)
3. Fentanyl (highest average consumption)
5. MDMA (highest average consumption)
4. Heroin (highest capital city consumption)
1. Methylamphetamine (highest average consumption)