The City of Mesa says people knocking on doors and identifying themselves as Water Resources employees do not work for the city.
According to Mesa officials, the individuals have been asking residents to let them into homes to test water quality.
The City of Mesa said their Water Resources staff will never request to enter your home to collect samples.
Mesa residents can call 480-644-4444 to verify a person's identity who claims to be a Water Resources employee. Additionally, officials said these city employees always drive a logoed city vehicle, wear a uniform with their name and a city logo, and carry an ID badge.
Anyone in Mesa suspicious of a person trying to access their home should report the incident to Mesa police at 480-644-2211.