The City of San Marcos is warning its citizens about a scam where people claim to work for the city, so that they may enter a home and test the water.

However, city officials said they don't conduct water testing at people's homes.

A resident at the Sunset Acres community near Broadway Street contacted city officials and said three people posed as city employees and asked to enter the home. The resident didn't let them in, and the scammers reportedly left and claimed they would return later.

“We urge residents not to allow anyone in their homes if there is even the slightest question about their identity,” said Chief of Police Chase Stapp.

The city said people unsure about a city worker's identity should ask to see their badge, which city employees are carrying all the time.

The suspects' descriptions are below:

-Male, tall and thin with dark hair and mustache

-Female, tall and thin with long dark hair, wearing black pants

-Female, short and thin with long dark hair, wearing black pants

City officials said the scammers' vehicle is described as a newer model four-door car.

The Police Department asks residents to report any suspicious activity by calling the non-emergency number at 512.753.2108.