HOMEOWNERS are being warned to be extra vigilant about bogus callers.
The Home Office has released figures which reveal that there were more than 12,000 cases of bogus caller incidents nationally last year.
More than half of the imposters claimed to be from the water board in a bid to distract the homeowner and steal from them.
The warning comes days after police in Huddersfield revealed two residents had been targeted by men claiming to be from the water board.
Police say two different con-men targeted two pensioners claiming to be from Yorkshire Water.
An 81-year-old woman and a 79-year-old man were targeted in Scholes and Lindley by thieves who made off with cash after telling them they worked for the water board.
Detective Constable Russ Conlon said there had been only five offences in the borough since last November of bogus workmen - a low figure for the time of year.
“Remember the golden rule - never open your door to anyone you don’t know,” Det Con Conlon said.
The police and the Consumer Council for Water are advising homeowners to ask people claiming to be from the water board, or any other agency, to check for identification.
Yve Buckland from the council said: “This is a particularly disturbing crime because it deliberately targets the weak and vulnerable.
“Victims of these crimes are most likely to be older people who live alone.”
They also say that the incidents tend to occur on a dark winter afternoon or evening.
Their advice is to always ask for identification, call the water company to check the visit is legitimate, keep the visitor outside your door and call the police if the visitor becomes aggressive.
Water companies will also give you a password to use to establish if the workman is bogus or not.