A password system is helping to crack down on bogus callers in Leeds.
Since launching its doorstep password scheme, Yorkshire Water has seen more than 7,000 customers sign up.
Now the company is urging those who have yet to take advantage of the free customer protection service to get in touch.
The password scheme enables customers to make sure they do not fall victim to a bogus trader.
The service was set up following a significant number of complaints about bogus callers attempting to enter properties by pretending to work for Yorkshire Water in order to steal possessions and money.
Elderly and vulnerable customers living in Pudsey and Horsforth in March were targeted on six separate occasions earlier this year.
The doorstep conmen claimed to be workmen requiring access to water pipes or cisterns.
Cash and a bank card were found to have been taken in two of the incidents, which involved two men.
Matt Thompson of Yorkshire Water said: “We’re determined to do everything we can to protect our customers from the evil scourge of bogus callers operating in Yorkshire.
“Unfortunately, we’re still seeing our customers falling prey to callous conmen who claim to be from Yorkshire Water or the ‘water board’ in order to gain entry into people’s properties and steal their possessions and money.
“That’s why we’re more keen than ever that all of our customers by signing up to our free doorstep password scheme.”
All you have to do is register an agreed personal password with Yorkshire Water by phone.
In future a genuine member of staff calling or visiting your property will know the password.
If they do not, you are advised to end the phone call or stop the person entering your property by closing the door immediately.
Even if a tradesman does know your password, you can further check their details by calling Yorkshire Water on 0845 124 2424.