A water-testing scam is circulating around the Twin Cities, according to the St. Louis Park Police Department.
Someone leaves a small tube at a residents, along with a card that asks for personal information like name, phone number and income.
"This is NOT coming from the city—if the city was testing your water, you would be contacted beforehand via official city letterhead," according to a statement from the police department. "... Please note that it is against city code for people to leave these at your door."
If you receive one of these tubes and card, call the nonemergency police number at 952-924-2618.
A similar scam has been reported in Richfield.