We arrested a man after a cannabis farm containing 40 plants was found at a house in Huyton on Saturday (3 August 2019).
Community officers on patrol found the farm, with plants growing in two bedrooms along with growing equipment, just before 9pm.
The electricity was also found to have been abstracted.
The estimated annual yield of the cannabis farm would have been around £160,000.
A 42-year-old man from Huyton was arrested on suspicion of production of cannabis, abstraction of electricity and theft of a bicycle. He has been released under investigation.
Community Policing Sergeant Steven Owen said: "Criminal groups involved in growing cannabis are often involved in other serious organised crime and will use any property they can, often in the heart of our communities, to grow cannabis farms of various sizes.
"Our communities can help us stop these groups, who are only interested in making money, from turning houses and businesses into potential death traps. Water and electricty do not mix, and cannabis farms have in the past caught fire and caused significant damage.
“Nobody wants to live or work next door to these places and we would ask that if you believe someone is using a property for this purpose, please tell us so we can take positive action and find those responsible for setting them up."
Anyone with information is asked to contact Merseyside Police social media desk via Twitter @MerPolCC or Facebook Merseyside Police CC. You can also call 101 quoting incident reference 996 of 3 August or contact the independent charity Crimestoppers anonymously, on 0800 555 111 or via their online form at: https://crimestoppers-uk.org/give-information/give-information.